Home

Regim

1. W 1046 H 697 R 1 2 246 Avg 27 BGnd 21 21 21 For color images you can choose between the sum of all channels and the single channels Page 46 of 54 Regim user manual 30 05 2013 21 The status bar of the image window The image window has a status bar that shows additional information about the image These are WwW The width of the image in pixels H The height of the image in pixels R The brightness range from to of the image Avg The average brightness of the image BGnd The brightness of the background When you move the mouse across the image also the following information will be shown X Y The pixel coordinates of the mouse pointer RGB or L The RGB values for RGB images or the brightness value for B amp W images of the current mouse position If the image contains WCS data in the FITS Header also the equatorial coordinates RA and DEC for the current mouse position will be shown a tee DAF 2 Le IIS E C ESAN JA TAS is VR 3948 H 2622 R 0 55155 Avg 653 BGnd 529 X 1729 Y 1444 L 598 WCS RA 20h 52 19 DE 30 55 16 Page 47 of 54 Regim user manual 30 05 2013 22 The Status Window 03 02 2005 22 52 26 DEBUG Creating new BufferedImage width 765 length 512 03 02 2005 22 52 26 DEBUG BufferedImage BufferedImageGs64e92 type 1 DirectColorModel rmask 0000 gmask 00 bmask ff amask 0 IntegerInterleavedRaster width 763 height 512 Bands 2 Off 0 yOLE
2. Add to darks Add to flats Add to flat darks lv do calibration do deblooming do register do preview Dateiname clark fit do combination Dateityp Images FITS Images fit fits fts Darks Flats Flat Darks ted ic447 100307 1_a_ O01Lfit ted ic447 100307 1a_ O02Lfit ted ic447 100307 1_a_ O03Lfit tcd 1c447 100307 l_a_ 004Lfit ted ic447 100307 1_a_ OO5SLfit ped 1c447 100307 l_a_ 006Lfit cd 1c447 100307 l_a 007Lfit ed cs td 1c447 100307 dark fit 47 100307 f_ 001f fit 47 100307 f_ 002f fit 47 100307 f_ 003f fit 47 100307 f_ 004f fit pz xooaa i oeatoy 7 100307 f_ 006f fit 47 100307 f_ 007f fit 47 100307 f_ 008f fit 147 100307 df_ 001d fit 47 100307 df_ 002d fit 47 100307 df_ 003d fit 147 100307 df_ 004d fit 47 100307 df_ 005d fit 47 100307 df_ 006d fit 47 100307 df_ 007d fit 147 100307 df_ 008d fit Ecd 1c447 100307 l_a_ 009Lfit 47 100307 f_ 009f fit 147 100307 df_ 009d fit E Il Il gt ET DES em pa 4 gt OK Cancel There are five checkboxes to activate the processing steps do calibration activates the calibration Page 11 of 54 Regim user manual 30 05 2013 do deblooming activates the deblooming do register activates the registration do preview activates the preview prior to the combination It allows you to throw out bad images do com
3. the rest of the star This effect will most likely disappear once the final image is stretched 8 2 Remove Blooming in many images The function Remove Blooming from Files does the deblooming for a large number of image files There will appear a f file chooser first to select the images Afterwards there will appear the dialog that was described in the previous chapter to set the parameters The debloomed image files will be saved with the prefix Dbl_ in the same directory Note This functionality is also available under Preprocessing Page 17 of 54 Regim user manual 30 05 2013 9 Register images 9 1 Register opened Deep Sky images To register two or more opened images on each other there is the function Register in Edit menu The following dialog will appear Master Frame 0 Db1_Cal_vabt 52 a 001L fit v Images to register oe Lal A Number of stars 2x upsample Star min brightness lv Same scale f Star max brightness _ bicubic Interpolation FWHM low limit Y normalize background E Transform mode Linear Search radius 20 Cancel Master Frame Images to register Number of stars Transform mode Star min brightness Star max brightness choose here the image where all other images should be registered on here choose the images that should be registered to the master
4. Maximum Combine Files Subtract Files averages several opened images using weight factors averages several image files Recommended for large number of images combination of several opened images via median using weight factors combination of several image files via median Recommended for large number of images combination of several opened image via Sigma combination of several image files via Sigma combination of several opened image via SD Mask combination of several image files via SD Mask combination of several opened image via Maximum combination of several image files via Maximum subtracts the image in the top window from several other images Page 8 of 54 Regim user manual 30 05 2013 5 5 The Color Menu Multiply Channels multiplication of singe color channels with a value Combine Channels combination of three greyscale images to a RGB image Split Channels splits a RGB image into three separate channels Monochrome transforms a RGB image into greyscale RAW Debayering transforms a camera RAW image into a RGBimage Man B V Color Calibration manual color calibration of an image using a stars color index B V Auto B V Color Calibration automatic color calibration of an image using stars color index B V Non linear g c retrieval allows non linear contrast stretch of an RGB image without changing the color ratios 5 6 The Preprocessing Menu Setup defect list opens
5. 0 data0ffset 0 O 02 2005 22 52 26 DEBUG Width 763 Height 512 02 2005 22 52 26 DEBUG ImageFrame getName name me Cal FVO16 RT16 TIF 02 2005 22 52 26 DEBUG internal Framedctivated mc Cal FV0O16 RT16 TIF 02 2005 22 52 26 DEBUG windowDeactivated 02 2005 22 07 21 DEBUG windowdctivated framed 02 2005 23 07 37 DEBUG internal FrameDeactiwvated 02 2005 22 08 50 DEBUG windowDeactiwated 02 2005 22 09 15 DEBUG windowdctivated framed The status window shows information about the current running operations It also contains information that may be helpful for me to analyze problems that may occur To have an eye on the status window is an good idea During some operations there will also be a progress bar at the bottom of the status window Page 48 of 54 Regim user manual 30 05 2013 23 Show Fits Header Fits Header _ges fit Tf Standard FITS format NOST 100 2 0 16 Mo of bits per pixel 2 Mo of axes in image 4268 Mo of pixels 2944 No of pixels 0 Parameter count l Groupe count 1 0 BSCALE value 22765 0 BZERO value 2011 02 07T20 46 29 Date of writing Reglm combined combination 3igmalPass 2 Number of WCS axes FKS 7 32000 2000 0 Jz000 Ra TAN R amp in tangent plane projection DEC TAN DEC in tangent plane projection 2184 0 Reference point axis 1 1472 0 Reference point axis 2 166 5725605155524 value at reference point 12
6. blinking Click Stop to stop blinking The slider allows to set the blink rate The blink comparator can be used for the following purposes 1 To check if image registration is ok 2 To look for moving objects comets minor planets etc 15 2 Blinking of many images If you want to blink a large number of images it is recommended to use the function Blink Files A file chooser will appear to select all images you want to blink Then the dialog described in the previous chapter appears The images are then loaded in a cycle This allows to blink an unlimited number of images Note The files are loaded cyclic into an internal buffer to allow blinking without delay The standard size of the buffer is four That means there may be up to four images in the buffer If you have very large images it may happen that your run out of memory In such cases the buffer size may be reduced To do so change the value of the parameter blinkFifoSize in the file regim properties Page 36 of 54 Regim user manual 30 05 2013 16 Visualization 16 1 Setting black and white point On the right side of the program window there are two sliders These sliders can be used to set the black and white point for the current image window This may be helpful to make weak details in an image visible If you have set the settings and want to do a further stretch you can use the fine option This sets the sliders back but leaves the value range you set Then the
7. keys in combination with the Alt key Page 39 of 54 Regim user manual 30 05 2013 18 Astrometry Plate Solving For further investigation of an image it is often helpful when the image contains information about the shown field This allows analysis with tools like Aladin Obtaining these information is called Plate Solving This is done by matching the stars in the image against data from a star catalog If the matching was successful the calculated data coordinates of the image center rotation angle etc will be written to the FITS Header The FITS Header can be used by other tools e g Aladin Note For this operation an internet connection is required See also chapter 6 Preferences You will find this operation in the menu Tools gt Plate Solve The following dialog will appear Plate solving a Use object name Use coordinates Object name NGC3718 Image center RA HH MM SS Image center Dec DD MM SS Image FOV arcmin 50 Number of stars 200 Star min brightness 0 1 w auto Star max brightness 1 0 FWHM low limit 2 0 Transform mode Linear Search radius 20 OK Cancel This dialog is similar to the dialog for automatic color calibration see chapter 14 4 Automatic color calibration using star colors 3 See http aladin u strasbg fr Page 40 of 54 Regim user manual 30 05 2013 After setting the required parameters and pressing OK anoth
8. sliders cover the remaining intervall Important note This setting just changes the current visualization on the screen The image data will not be changed 16 2 Equalize Visualization If you have several images open you can apply the visualization settings of the current image to all other images First set the settings for the current image as described in the previous section Then choose Equalize Visualization from the View menu The black and white point will then be set for all open images 16 3 Auto Stretch In the menu View you will find the operation Auto Stretch This operation causes that the black and white point are set close to the average brightness value of the image This is useful for a quick evaluation of images This operation is also available via the popup menu of an image or by pressing F4 16 4 Image zoom Regim tries to show an image completely in a window after loading Therefore the image may be shown scaled down The current zoom level is shown in the title bar of the image window You can change the zoom level from 1 1 to 1 19 via the image popup menu right click into the image or via the keyboard using the keys and 1 Important note This setting just changes the current visualization on the screen The image data will not be changed Page 37 of 54 Regim user manual 30 05 2013 17 Edit Pixel The function Edit Pixel can be found via the popup menu right click into the image of the ima
9. 25 S 53ff amp VdS Journal Nr 26 S 48ff H Tomsik P Riepe Farbkalibration einer CCD Aufnahme mit Hilfe von G Sternen VdS Journal Nr 25 S 57ff amp VdS Journal Nr 26 S 50ff Page 29 of 54 B V color calibration a Use object name O Use coordinates Regim user manual 30 05 2013 Object name m94 Image center RA HH MM SS Image center Dec DD MM SS Image FOV arcmin l40 Number of stars 130 Star min brightness 0 1 Star max brightness 10 9 Transform mode Linear Search radius 20 8 Auto Background Manual Background OK I Cancel Use object name Object name Image center Image FOV Number of stars auto background To find the stars in the star catalog the program needs to know in which field is has to search If you select Use object name you can enter the catalog designation e g M94 NGC2403 or Collinder399 of your object in the field below The object should be more or less in the center of the image The object name will be looked up via the internet service Simbad If the object name can not be found in Simbad you can use Use coordinates and enter the equatorial coordinates of the image center instead Here you can enter the catalog designation of your object Here you can enter the equatorial coordinates of the image center Here you can enter the size of the image field in arc seconds For rec
10. 33 52 58 367101 75 01423 99 01250 40 27453 21 5690298 01473 05 01805 69 21 53 6 554844 67 01473 08 01165 57 31 53 1 234860 13 01479 09 00651 46 40 52 56 639013 35 01484 76 01242 41 ER ERE 5230844 01488 67 02161 07 16 53 9 1904016 01514 99 02431 31 13 53 11 491654 03 01617 91 01450 95 35 53 3 1065827 01693 47 01411 46 40 53 3 300644 84 01749 49 00273 38 1 52 54 875125 18 01878 11 02844 54 26 53 16 1024046 Number of stars found 81 01906 80 01803 10 45 53 7 7183872 Average FWHM 8 24 01939 37 01165 10 57 53 2 3708023 M1067 51 102207 71 AN S32 11 DNAS TAG First the list on the right side is empty You can now search for the stars in the image The parameters are the same as for registering of images After the search the list will be filled with the entries for the stars These contain The pixel coordinates of the star within the image The equatorial coordinates of the star Therefore a plate solving is needed prior to showing this star list Otherwise these columns will be empty TheFWHM value of the star The brightness of the star This is an instrumental magnitude and should not be mistaken for brightness values from star catalogs If you click on an entry in the list the c
11. Calibrate the raw images Menu Preprocessing gt Preprocessing If necessary remove blooming from the calibrated images Menu Edit gt Remove Blooming from Files or even better directly under Preprocessing Register the calibrated images Menu Edit gt Register Files or even better directly under Preprocessing Blink the images against each other to be sure they are registered correctly and to get a feeling for the different quality of the images Combine the registered images Menu Combine gt Blend Files Median combine Files Sigma combine Files or SD combine files or even better directly under Preprocessing Save the result For further processing a standard image processing tool like Picture Window Photoshop or Gimp is recommended Page 52 of 54 Regim user manual 30 05 2013 27 Read Raw files with DCRaw DCRaw is a free program written by Dave Coffin to read an convert Raw image files If your camera is not supported by jrawio then DCRaw may be the right choice To use DCRaw to read raw files you need to download and install DCRaw on your computer As DCRaw in contrast to Regim is not system independent you need to download and install the correct version of DCRaw for your operating system The latest version of DCRaw is 9 17 as at May 2013 After that you need to tell Regim where on your computer DCRaw is located See chapter Preferences 27 1 Special notes for Mac users It seems there is no easy to install up to date
12. Edit menu There will appear a file chooser to select all images to register Afterwards the same dialog appears that was described in the previous chapter The registered images will be saved with the prefix Reg_ in the same directory Note This functionality is also available under Preprocessing 9 3 Register opened images of the sun or moon To register two or more opened images of the sun or moon e g for an animation you can use the operation Register Sun in Edit menu Note This is a very basic operation It only works if the whole disk of the sun or moon is on the image Page 19 of 54 Regim user manual 30 05 2013 9 4 Register many images of the sun or moon To register a larger number of images use Register Sun Files in Edit menu A file selector dialog will appear that allows to select the images for registration Page 20 of 54 Regim user manual 30 05 2013 10 Normalize background 10 1 Normalize background of opened images The function Normalize Background can be used to bring the background of several images to the same level This is helpful if the images should later be combined using the Sigma or SD Mask method These combination methods work more efficient if the background is normalized The following dialog will appear Normalize Background Dx O l_a_ O04Lfit Master Frame OJLa_ 004L fit x Images to normalize ok Cancel Choose the image as master that should define t
13. Only those images will be processed that you explicitly highlighted in this list sets the number of stars that are used by the search algorithm A lower number causes faster processing and lower memory consumption but if the number is too low the accuracy will be compromised or there may be even no matching pattern found at all Transformation mode for the images to register At the moment always linear sets the minimum brightness for detecting a star A value of 0 2 means that a star must have at least 20 percent of the maximum image brightness This value must be set depending on the overall image brightness If not enough stars are found you should lower the value On the other hands if the program starts to detect background noise as stars choose a higher value Pay attention to the status window There Regim makes an output how many stars were found If less than 20 stars per image are found registration may fail This is the most important parameter for registration sets the maximum brightness for detecting a star Bright stars that are in saturation or even bloomed are not well suited for registration With this parameter they can be avoided A value of Page 18 of 54 Regim user manual 30 05 2013 0 8 means that a star must have not more than 80 percent of the maximum brightness of the image FWHM low limit sets a lower limit for the FWHM of detected stars Stars with a FWHM lower than this value will be discarded to avo
14. of images there often appears a black border on one or two sides of an image If this option is set these black borders are ignored during the blend operation and only information from images that have real data for that areas is used 12 2 Average combination of many images To average a larger number of images use the operation Blend Files in Combine menu There will appear a file chooser to select all the images The images should have been registered prior to this operation and must have the same size The resulting combined image will be opened in a new window and can then be saved 12 3 Median combination of opened images The handling is the same as for average combination but the median is used instead of the average Page 23 of 54 Regim user manual 30 05 2013 12 4 Median combination of many images The handling is the same as for average combination but the median is used instead of the average 12 5 Sigma combination of opened images The handling is the same as for average combination but the Sigma method is used instead of the average This method combines the advantages of average and median while avoiding the disadvantages During combination the empiric standard deviation for each pixel is calculated and only those values that lie within a certain interval The interval results from the median the standard deviation multiplied with a given sigma value This allows the elimination of outliers like cosmics satellite
15. select all the flat frames and the darks bias for the flats optional The created master flat will be shown in a new window and can then be saved You can use this master flat later during the preprocessing instead of the single flat frames 7 5 Create Modify defect list To create a defect list for repair of pixel columndefects on a monochrome CCD choose Setup defect list in Preprocessing menu The following dialog will appear Page 14 of 54 Regim user manual 30 05 2013 I 78 79 Here you can create defect list for different cameras and add column defects To find the precise coordinates of the defect pixels columns it is recommended to use the Edit Pixel functionality The created defect lists can later be selected during Preprocessing on the tab Calibration to do the repair of the defects during calibration Page 15 of 54 8 Deblooming Regim user manual 30 05 2013 8 1 Remove Blooming in an open image Images created with a CCD camera without antiblooming e g SBig ST10XME show blooming on bright stars These bloomingspikes can be removed with the function Remove Blooming in Edit menu or during Preprocessing The following dialog will appear Bloom limit Interpolation width Star limit sets the lower brightness value for the search for blooming All values higher than the specified one will be treated as blooming The exact value needs to be tested on o
16. shown on the status bar of the image Generate Starts the generation of the probes The position of the probes are shown as small squares within the image There should be no square on foreground objects while the background should have a sufficient coverage If necessary you can set ore remove additional probes with the mouse Execute Once you are satisfied with the distribution of the probes you can start the processing with this button The background model will be calculated opened as a separate image and subtracte from the image Exit Leaves the dialog Page 26 of 54 Regim user manual 30 05 2013 ET Regim z File Edit View Combine Color Preprocessing Tools Help IF IN A 0 rgb1 tif Zoom 1 5 0 Remove Gradient Number samples Blur radius Background auto manual Generate Execute Status 07 05 2013 12 Thread running runtype RUNISPE REMOVE GRADIENT 07 05 2013 Thread running runtype 0 07 05 2013 bgLimit 12951 0 07 05 2013 Nuzber of probes 275 07 05 2013 t Invalid probes 57 Note It might be necessary to correct the brightness of the image slightly after gradient removal This operation only removes gradients but does not correct the overall color balance Page 27 of 54 Regim user manual 30 05 2013 14 Color manipulation 14 1 Combine RGB image To create a color RGB image from single color channels use the function Comb
17. the dialog to set up defect lists column or pixel defects for monochrome CCDs Setup darks creates a master dark from several files The files are median combined Setup flats creates a master flat from several files The files are median combined Preprocessing does a complete data reduction dark and flat repair of column defects deblooming registration preview and combination for several image files 5 7 The Tools Menu Plate solve does a plate solving The exact coordinates size and orientation of the image are calculated and written into the Fits header Star List Shows a list of stars that the image contains Photometry Opens the photometry dialog Page 9 of 54 Regim user manual 30 05 2013 6 Preferences You will find the preferences under Preferences in the File menu The following dialog will appear Preferences Number of CPUs 4 Use proxy y port rv Use DCRaw DCRaw path D diverses dcraw dcraw exe Ok Cancel Number of CPUs Here you can set the number of CPUs that you want Regim to use Based on this setting Regim will use a number of parallel threads for processing For a computer with quad core CPU you should set this value to 4 Use Proxy This is important for all functionality that require an internet connection automatic color calibration plate solving If your computer requires a proxy for internet connection so choose this option and
18. to process more than one file in one run all the files need to have been registered first After you have added the files to the list Files for photometry using the button Add to files you can switch to the tab Star selection 19 2 Star selection Now the first image will be opened Page 42 of 54 Regim user manual 30 05 2013 amp Var Star Ref Star Chk Star Label Xx Y iMa via R cnc oe 00676 45 03 013 20 005 93 y __ 000 BBP 430 01030 49 00823 99 03 012 38 010 75 Label 000 BJX 383 00986 52 00866 63 04 011 06 012 05 000 BBP 425 01077 52 00833 35 04 010 86 012 30 Apply 000 BBP 419 01249 92 00656 54 03 011 29 011 82 emeve 000 BBP 466 00671 85 00596 62 03 012 21 010 92 emors 000 BBP 484 00302 93 00819 90 04 014 98 008 15 Galne m ci aD Load settings Save settings Save as csv Save as AAVSO C Use arbitrary Z Cancel de andreasroerig bild BufferedImageThread finished Yotart 0 Yend 736 de andreacrosrig bild BufferedizageThread running de andreaorosrig bild BufferedinageThxead faniched DEBUG Beale ee A Adding stars to the selection Now you can start to mark stars by selection the star type and then click on the star in the image The star types are Page 43 of 54 Regim user manual 30 05 2013 Var Star Variable star that is to be measured Ref
19. version of DCRaw for Mac OS X available on the web Therefore the installation is not as straight forward as on Windows or Linux Marco Frissen was so kind to prepare an installation guide for DCRaw on Mac OS X As I do not have a Mac myself I have included Marco s guide here How to install dcraw on Mac OS X using MacPorts To install dcraw on Mac OS X you first need to have a number of OS X specific items installed 1 XCode 4 x is essential and can be found in the Mac Appstore https itunes apple com nl app xcode id497799835 l en amp mt 12 Install it run it to accept the EULA Go to https developer apple com programs register and register for a free a developer account You do not have to purchase any OS or Mac specific programs to use XCode but you do need a developer account to get the Command Line Tools which are needed for MacPorts 2 Once you did this open XCode again and from Preferences gt Downloads select the command line tools to install 3 Download MacPorts from http www macports org install php Choose the pkg installer for your platform and run the downloaded install file Note that during install you will need to enter your user password because MacPorts will add files to your system directories If there is a new MacPorts release all you need to do is open a Terminal and enter sudo port selfupdate Of course you can also download a new installer package from their site 4 open up a Termin
20. 1 NormMatize BACKGROUND OF OPENED IMAGES de iia 21 102 NORMALIZE BACKGROUND OF MANY IMAGE Do inoc aa e a a a ker 21 11 GEOME FRIC OPERATIONS 0d rd AA AAA ANN 22 TEVE EE ita 22 VA DE A ai A A A a iaa 22 12 COMBINATION OF IMAGES ap AA AAA A 23 12 1 Asmar COMBINATION OR OPENED IMAGES rail ds NA RS ERA bee i 23 12 2 AVERAGE COMBINATION OF MANY IMAGES 5 123 MI EDIAN COMBINN TION OF OPENED IMAGES ao 124 MEDIAN GOMBINNTION OF MANY IMAGES A e ii 12 5 SIGMA COMBINATION OF OPENED IMAGES 126 ICRA COMBINATION OF MANY MAGES ii 12 7 SD M isr CONBINE TON OE OPENED IMAGES veni cscs anda AAA A AA A A a 24 CEODNA COMBINE TON OR MANS NACE paaa abuatianasacieloiiusaides Ives Eks dre 25 12 9 MAMUN COMBINATION OF OPENED IMAGES so us dei dr d rest rr 12 10 Maximum COMBINATION OF MANY IMAGES ss aaa A 25 13 GRADIENTS AND OFESE To coincido id e a A A A A A 25 Page 2 of 54 Regim user manual 30 05 2013 TA A LAR OE A A A EA A A O 25 VA ENT EEO as rr A DA A DEA A bon re EE Ra RARE 26 JA COLOR MANIPULATION psa ia 28 12 1 Comme ROE Mie n VEDIA AANA O rasar pigan sn E 14 53 CONVERT RGB TO MONGCHROM ii 14 4 AUTOMATIC COLOR CALIBRATION USING STAR COLORS 14 5 NIANUAL COLOR CAIBRATION USING STAR COLOR ii oCo RAW IMAGES TO CE ba ri A dao A A O O 15 BLINK COMPARATOR uiii A ne k rren 36 151 Brine Or OPEN BR NONE A A kieabs ap eaaanibeuadiedaalaaiae 36 152 PAE or ma AE a 36 16 VISUALIZA TION S
21. 972001516512726 value at reference point deg f unit is degrees deg i f unit is degrees 2 4672020796172773E 4 change in RA per pixel along first axis evalu 4 12655700541559 E 5 change in RA per pixel along second axis evalu To show the Fits Header of an FITS image right click into the image From the popup menus that appears select Show Fits Header A window will be opened that shows the content of the FITS Headers Page 49 of 54 Regim user manual 30 05 2013 24 Star List Tool To show a list of all stars in the image choose Star List from the Tools menu The following window will appear ngc3718_platesolvedsfit Star min brightness jor v C auto 00371 61 103 36 00462 52 01716 05 1857318 Star max brightness 1 0 2 2 g o r 00467 63 01396 44 205967 29 FWHM low limit 2 5 00501 44 00864 36 383320 26 25 ly 00646 71 02090 68 174932 01 Search radius po y 00810 65 aa 00839 06 41 00845 49 00878 00 1 452 57 00862 58 01414 38 53 53 1 448937 15 00888 33 02361 29 39 4 53 9 710441 70 00935 72 00976 56 4 452 58 381124 24 00967 31 02849 56 35 1453 14 2474822 01000 33 00300 02 19 52 52 274113 62 01113 62 01239 26 10 53 0 327450 67 01116 54 00041 56 30 52 50 1706524 01264 08 02552 60 S74530 12 976048 62 01322 45 02837 56 55 53 14 816852 73 01415 71 00650 56 37 52 56 402794 78 01423 91 00886 58
22. A 37 Tel SETTING BLACK ANDE POE id A aaa 37 16 2 EQUALIZE VISUALIZATION 16 3 Auro STRETCH TEA AER ROOM A E A AA AAA a A cient 17 EDIT PIXEL cies prev AAA AA A 38 18 ASTROMETRY PLATE SOLVING Junin a e id init 40 19 PERO TOMETR Y sii ii AA A A A A A A AA tals A kesaki 42 Saving ond loading he EA A en A A A A A AG 44 E A A a auc Inada ed 19 3 ADVANCED SETTINGS 20 SHOW HISTOGRAM eiii s adesksossnssesubess sssstesesdes iasssv h sssbes bopsss sslsosskessskorss ensadensdssslssknerpss beses 46 21 THE STATUS BAR OF THE IMAGE WINDOW ssssstosssovssssssssosbssss ssss sssodssssnssss sssssiesssossosesssssskoses nesssnstsss 47 22 THE STATUS WIND nanccnnnnnannnnannne a 48 23 SHOW FTTS HEADER s5s sssstosss ddssvasss ssssssvsssssessnssssansssbosssossssssnssassssbessssssp sssossosessspsssssesno asnsssssebesebapsvsnssenss 49 24 STAR LESTTOO Li oi 50 25 BATCH CONVERSION OF IMAGE FILES ssssscsssssssassesissssnsscnssansisesacssonisussseesnivassssinntsotssssivassadsevensdssuse 51 26 GENERAL TIPS FOR PROCESSING scsi ia dla dd lid an 52 27 READ RAW FILES WITH DCRAW 0 A A AAA AA A A 53 2 SE TES FO MAC US a a iio cati n 53 Page 3 of 54 Regim user manual 30 05 2013 1 What is Regim Regim is a tool that should make processing of astronomical images easier The focus is on images that were captured with DSLRs or CCD cameras Regim is not meant to replace more complex image processing sy
23. Regim F Regim File Edit View Combine Color Preprocessing Tools Help A OJauriga_wide_gross pg Zoom 1 2 0 W 1532 H 1022 R 0 254 Avg 51 B nd 32 32 45 E Status V 3 0 User Manual 2013 Andreas R rig Regim user manual 30 05 2013 Inhalt 1 WHAT IS REGIM bessssssssassvssssssssosvssnsvsssssssspsssvassssasespusessossspessssonspbessssssssesssssspesessssinsessspsssosssiosssssnsssspsssssnssisses 4 2 SUPPORTED FILE FORMATS a dineis 4 3 INSTALLATION PREFERENCES ini id iadi seiis 4 A INSTALLATION AND START eannan R 5 4 1 START UNDER WinDbows XP VISTA WINDOWS 7 WINDOWS 8 cessccssssssscsssceessessscesssesesseesseesssessscessseestesessssessesses 5 4 2 START UNDER LINUX PL RRO Cr Goch SS A SANN Assos ns Rn Na EAA rs ARA os a AA PER rr rp MO aces botades do aa tes mais Sines ud A E O OEE E EE E aan re EAEE EE Lo REAT URIS RON annan dev ancy e de a ok vist ot Von fbe HE N RA bete Ko hin ka AR awe an r RAN Ae 2 CREA DE INVERTIA Ser 7 5 CREATE MODIEY DEFECT LIST y DEBLOOMIN G 0000 A A A A Oil REMOVE BLODMING IN CAN OPEN MACE A A AA a 16 DE REMOVE BUOOMING A is 17 REGISTER TMAGES 05 ii A A GRS SARA ARA A AEA ERAN FASA NARE 18 TD REGITER DEENEO DE MAGES ii iD ESTER MANE MACS AE A AAA disk se b r ner 9 3 REGISTER OPENED IMAGES OF THE SUN OR MOON Of REGISTER MANN IMACES OF THE SUN DE NOON ia ie 10 NORMALIZE BACKGROUND ios 21 10
24. Star Reference star with precisely known brightness Chk Star A check star optional Once you clicked on a star in the image there will appear a new entry in the table For the reference stars you need to enter the brightness To do so select the star within the table and enter the brightness in the field Ref Mag Additionally you can enter a Label for each star By pressing the button Apply the changes will be transferred to the table The size of the aperture gap and annulus will be automatically calculated depending on the FWHM of the corresponding star Removing stars from the selection To remove a star from the selection select the star within the table and press the button Remove Brightness calculation After you have selected the star you want to measure and at least one reference star you can start the brightness calculation for the variable and the check stars by pressing the Calculate button The calculated values for the first selected image will be displayed within the table Saving the results The results can be saved in two different formats First as CSV file for import into a spreadsheet etc or in the format for the upload to AAVSO In both cases one data record per image file will be generated Saving and loading the settings If you want to measure the same star field frequently you can save the settings and load them again next time so you do not need to enter the stars their brightness and labels again H
25. al and enter sudo port install dcraw Page 53 of 54 Regim user manual 30 05 2013 This will again ask for your password Depending on the speed of your internet and computer this can take some time do not close the Terminal window until it is finished When the installation is finished dcraw is installed as opt local bin dcraw This is the folder you need to enter in regim for the dcraw location To upgrade to a new version of dcraw just type sudo port upgrade dcraw And to uninstall dcraw enter sudo port uninstall dcraw that s it Page 54 of 54
26. ar search radius the radius for star detection If you click on a star Regim tries to exactly get hold of it within the given radius The best value depends on the sampling of your image After selecting the color index click on the corresponding star within the image You may repeat this up to 5 times setting Number of stars The selected stars will be marked with a circle After selecting the stars click OK and the color calibration will start If you have selected manual background you will be prompted to select the background region with the mouse Note This operation is only available for RGB images Page 33 of 54 Regim user manual 30 05 2013 14 6 Convert RAW images to RGB This is done by the operation RAW Debayering in Color menu The following dialog will appear Standard DSLR First row contains red pixel 8 Custom _ First pixel of first row is green LUSON 8 RAW is 12 bit Stretch RAW to 16 bit RAW is 14 bit Color correction scaling C Auto scaling Red Green Blue Color correction offset C Auto offset Red Green Blue The description of the parameters can be found in chapter 7 2 Calibration Page 34 of 54 Regim user manual 30 05 2013 14 7 NoLiGCRA This strange word stands for Non linear gradation color retrieval algorithm It is a method developed by Harald Tomsik and Peter Riepe that allows to stretch a RGB image without changing the c
27. bination activates the combination For four of these there exists a tab on top of the dialog where you can modify the settings for the according functionality The settings are explained in the chapters of the corresponding functionality The dialog also contains a file chooser to select the files to process Simply drag amp drop them into the four lists below the file chooser or use the four buttons on the right to assign the files to the corresponding lists The list are Images the list for the images to process The first file in the list will be used as masterframe for the registration If you want to use a specific file as master add it as first file to the list and then add the rest Darks the list for the dark frames You can add a set of darks or a masterdark Flats the list for the flat frames You can add a set of flats or a masterflat Flat Darks the list of darks or bias for the flatframes If you have a masterflat that is already dark bias calibrated leave this list empty Once your settings are complete click OK The preprocessing will now be started and a new dialog appears that shows the progress The results of each step are saved with a corresponding name prefix If you activated the function do combination you should see the combined image once the preprocessing is complete You can now save it 7 2 Calibration Calibration is done via the function Preprocessing The chosen images will be dark and flat calibrate
28. d Additional settings can be made on the tab Calibration in the Preprocessing dialog Page 12 of 54 Regim user manual 30 05 2013 Register Combination Files are RAW O Standard DSLR a Custom Stretch RAW to 16 bit Cy Color correction scaling C Auto scaling First row contains red pixel First pixel of first row is green RAW is 12 bit RAW is 14 bit Red Green Blue Color correction offset C Auto offset Red Green Blue Repair defects Files are RAW Standard DSLR Custom First row contains red pixel here you can set if you want to repair pixel column defects of your CCD sensor This option should only be used for monochrome FITS files If this option is activated you can choose an existing defect list specifies that the images are color images in raw format This could be images from a DSLR or a one shot color OSC CCD camera Do NOT set this option for images from a monochrome CCD For DSLR RAWS The pattern of the Bayer Matrix will be automatic determined For raw OSC CCD images or DSLR RAWSs where the Bayer Matrix can not be automatic determined In this case two additional checkboxes to the right become active To be set if the first row of the raw image contains red pixels First pixel of first row green To be set if the first pixel of the first row represents green Both pa
29. en values will be added to the corresponding channel To subtract values simply use negative values If the resulting value would be below zero or greater than 65535 it will be limited by these values The option Ignore Zero causes that value that are zero will remain unchanged 13 2 Gradient removal Images often show unwanted gradients These can be removed with the operation Remove Gradient in Edit menu This operation should be used preferably on images that are already more or less completely processed Regim creates based on probes within the image a profile of the background This background profile will then be subtracted from the image to remove the gradient The problem is to separate the background from the foreground stars galaxies nebulae etc So the probes need to be placed in a meaningful manner The dialog offers the following options Number samples Defines how many probes will be place over the width of the image Higher numbers will result in a more detailed background model Blur radius The radius used to blur the background model not the image background Large values often deliver better results but also increase the execution time Background auto manual To place the probes only on the background Regim must define the background This can be done automatically or you can define a value manually You can get a feeling for the right value if you move the mouse over the image background and take a look at the values
30. er dialog will appear that shows the progress and if the operation was successful If plate solving was successful Regim writes the WCS parameters into the FITS Header of the image You should now save the images as FITS file Showing the FITS Header is described in chapter Show Fits Header If you have loaded an image that contains the WCS parameters in the header then you will see the equatorial coordinates for the position of the mouse in the status bar of the image see chapter The status bar of the image window 4 WCS World Coordinate System See http fits gsfc nasa gov fits wcs html Page 41 of 54 Regim user manual 30 05 2013 19 Photometry 19 1 File selection You can open the photometry module via the menu Tools gt Photometry There will appear a dialog to select the image files FITS you want to analyze Photometry i Star selection sun aaa DO04G fit y Reg_Cal_R_Cnc_a 0036 fit Y Reg_MedianCombined fit DOSG fit y Reg_Cal_R_Cnc_a 0046 fit DOGG fit y Reg_Cal_R_Cnc_a 0056 fit DO7G fit y Reg_Cal_R_Cnc_a 006G fit DO8G fit y Reg_Cal_R_Cnc_a 007G fit DO9G fit y Reg_Cal_R_Cnc_a 0086 fit 010G fit y Reg_Cal_R_Cnc_a 0096 fit LCnc_a 0026G fit Reg_Cal_R_Cnc_a 010G fit 4 O A FY Dateiname Reg_MedianCombined fit Dateityp FITS Images fit fits fts v Files for photometry mnt neptund astro Veraenderliche R_Cnc 130424 Reg_MedianCombined fit If you want
31. fill the two fields In a home network you probably do not need a proxy Proxy host Enter the name or IP address of the proxy Proxy port Enter the port of the proxy Use DCRaw To use DCRaw instead of jrawio for reading Raw files select this option DCRaw path If you have Use DCRaw selected you need to set the path to DCRaw on your system using the button with the three dots Page 10 of 54 Regim user manual 30 05 2013 7 Calibration of raw images and preprocessing 7 1 Preprocessing For calibration and base processing steps the Preprocessing functionality is used It can be found in the Preprocessing menu Itis a very powerful functionality Within one action you can calibrate raw images dark and flatfield calibration repair pixel defects debayering of raw color images debloom images do registration of images preview the images combine the images The following dialog will appear Preprocessing Files Calibration Suchen in C 100307 Y AE Deblooming Register Combination Add to images Cy darkfit Ey af_ 001d fit Ey af_ 002d fit Ey af_ 003d fit E af_ 004d fit Ey af_ 005d fit Ey af_ 006d fit E af_ 007d fit 4 E af_ 008d fit E af_ 009d fit E af_ 010d fit CY E 001f fit E _ 002f fit E f_ 003f fit E f_ 004f fit Ey 005f fit E f_ 006f fit E f 007f fit E f_ 008f fit Ey f 009f fit C f 010f fit Ey flatfit E La_ 001Lfit C La_ 002Lfit
32. ge The following dialog will appear Edit pixel 7315 7456 7532 7545 7684 8103 8356 8250 7838 7616 7387 7618 7860 7363 8136 8506 8718 8626 8265 7825 7440 7805 8232 8541 8731 9138 3218 8332 8568 8034 7465 2072 8655 9307 9920 10465 10424 3771 9057 8446 7478 8380 9356 10708 12255 13581113524 12036 10356 9097 7436 8628 10151 12797 16915 21371 22256 18075 13458 10424 74911 8833 10832 15521 25084 38512 43438 32904 19983 12591 7558 8824 10936 17125 32366 53782 61533 48234 26398 14251 7644 a531 10187 14786 26412 44703 52997 40368 22725 13220 7773 8195 91 1 11443 16292 23838 28072 22147 14883 10742 7624 7894 8479 9405 11011 13133 14246 12854 10647 9120 7440 7712 8129 8542 3140 9902 10230 3733 3014 8448 7310 7482 7790 8088 8460 8872 3042 8682 8269 8083 7238 7270 7402 7634 8011 8356 8507 8194 7823 7749 7154 7166 7261 7313 7488 7838 8071 7833 7589 7547 7147 7221 7225 7222 7316 7559 7755 7671 7489 7387 7191 7386 7287 7199 7259 7451 7554 7470 7334 7216 7125 7282 7233 7167 7197 7356 7407 7285 7186 7109 Paint is OFF X 1007 Y Apply changes OK Cancel The options will be explained in the following sections 17 1 The display elements Within the window the pixels a
33. he standard for the background level On the right side mark the images that should be adapted to the master 10 2 Normalize background of many images Use the function Normalize Background in Files to do normalization for a larger set of images without opening them all Page 21 of 54 Regim user manual 30 05 2013 11 Geometric operations 11 1 Double image size To double the with and height of an image use the operation Upsample 2x in Edit menu A bicubic interpolation is used during upsampling 11 2 Rotate image 90 To rotate the current image by 90 you can use the operation Rotate in Edit menu Page 22 of 54 Regim user manual 30 05 2013 12 Combination of images Note The combination operations are also available under Preprocessing 12 1 Average combination of opened images The average combination of several images may be used to improve S N The images should have been registered prior to this operation and must have the same size To combine two or more images using the average use the operation Blend in Combine Menu The following dialog will appear Weight M Ignore black border ok Cancel Frame Select the images to average Weight Here you could enter a weight factor for each image The information of the corresponding image will be multiplied with the weight prior to averaging This may be used to handle different exposure times of the single images Ignore black border During registration
34. id detecting hot pixels and other small artifacts as stars Search radius sets the radius for the star search if an bright spot in the image was found The value depends on the sampling of the image arc seconds per pixel 2x upsample if set all images are upsampled to double size before registration This will allow a slightly more precise registration and you may gain some resolution drizzling or dithering same scale if all images have the same scale this is usually the case if all images have been created with the same setup you should select this option It allows Regim to detect false match patterns during registration Otherwise deselect this option because it will prevent Regim from finding a match pattern bicubic interpolation switches interpolation on or off For images that are oversampled small pixels combined with long focal length I would recommend to switch it off normalize background if selected Regim will bring the background of all images to the same value that of the master frame This is important when the images are later combined using the Sigma or SD method Click Register to start the registration process After successful registration the registered images will be shown in new windows Note If you want to register a larger number of images it is recommended to use Register Files or Preprocessing 9 2 Register many images To register a larger number of images there is the function Register Files in
35. ies and regim cmd for Win XP Vista Win 7 Win8 and the file regim sh for Linux and Mac OS X Note On Linux and Mac OS X you may need to set the execution flag for the shell script see command chmod Note To run Regim you will need a Java Runtime Environment JRE installed on your computer If this is not the case you can download it from http www java com Please do not use OpenJDK It will cause problems Important for users of 64bit Windows systems If you try to download the JRE with Firefox from the website above it seems that you will get the 32bit version Therefore it might be better to use InternetExplorer to download the 64bit version of the Java Runtime Environment By default the upper memory limit assigned to Regim is 1GB 1024MB This is configured in the batch file regim cmd or regim sh with the parameter Xmx1024m If your computer has significantly more memory than 1024MB it may be an advantage to assign more memory to Regim but it should be less than the physical memory in your computer For systems with enough memory there are also batch files that assign 2GB to Regim regim2gb cmd and regim2gb sh 4 1 Start under Windows XP Vista Windows 7 Windows 8 In Windows Explorer navigate to the folder where you have unpacked Regim Now doubleclick on the file regim cmd or regim2gb cmd 4 2 Start under Linux Open a terminal window and navigate to the folder where you have unpacked Regim Now enter regim sh o
36. ine Channels in Color menu First open the three images that represent you color channels and then choose this menu option Then assign the images to the corresponding color channels 14 2 Color channel manipulation The weight of color channels might be changed with the operation Multiply Channels in Color menu The following dialog will appear Multiply Channels _ok Cancel With the three sliders or the entry fields you can multiply the color channels with a certain value You can judge the changes by pressing the Preview button The changes will become active after leaving the dialog with Ok 14 3 Convert RGB to monochrome To create monochrome image from a RGB image use Monochrome in Color menu There will appear a dialog to set the conversion parameters The following options are available Average all color channels will be used at the same weight Classic the classic monochrome conversion with stronger weight on the green channel This is derived from the human physiology Luminance extracts the luminance from the image Custom here you can choose your own weight for each channel Page 28 of 54 Regim user manual 30 05 2013 Monochrome conversion Select the conversion method O Average Classic Luminance Custom Red loz Green HA 0 58 Blue Y 0 14 f Ok Cancel Choose the option you find best 14 4 Automatic color calibration
37. ion of several opened sun or moon images Sun or moon need to be completely on the image This is recommended only for a small number of images due to memory consumption does the registration for several sun or moon images Sun or moon need to be completely on the image Recommended for larger numbers of images removes blooming spikes on bright stars of an opened image Only for images of monochrome CCD cameras without antiblooming removes blooming spikes for several image files normalization of the background of several opened images normalization of the background of several image files doubles width and height of an opened image rotates the image 90 counter clockwise rotates the image 90 clockwise adds an offset to an image removes brightness or colour gradients in an image Page 7 of 54 Invert 5 3 Equalize visualization Auto stretch Blink Blink Files Regim user manual 30 05 2013 Inverts the current image The View Menu sets the visualization settings black and white point for all opened images to the same values as for the top image sets the black and white point for visualization for the top image blinks the opened images against each other blinks many image files against each other 5 4 The Combine Menu Blend Blend Files Median Combine Median Combine Files Sigma Combine Sigma Combine Files SD Combine SD Combine Files Maximum Combine
38. ne image of a series to get the best result It may vary depending on the used equipment and sky conditions sets the width of the interpolation interval left and right of the blooming spikes The pixel values left and right of the blooming spikes are used to calculate the new values of the pixels that are covered by the blooming spikes Also this value needs to be tested on one image From my experience values of 2 or 3 should deliver good results sets the lower brightness value to determine if an pixel lies within a star This value is used by the program to decide if blooming is within or outside a star The interpolated values will then held a bit higher to maintain the shape of the star This value should always be significantly higher than the sky background but as low as possible It is recommended to test this setting on one image before running over a complete series The correct value may also depend on the filters used Page 16 of 54 Regim user manual 30 05 2013 fj Regim File Edit Combine Color Calibration Help Remove Bloom Bloom limit 53000 Interpolation width 2 Star limit 8000 13 09 2006 23 36 19 DEBU Thread running 19 09 2006 23 36 19 Remove Blooming gewaehlt Deblooming should be done on single exposures that have been at least dark calibrated but have not been undergone additional processing Note After deblooming the stars center may appear a bit darker than
39. olor ratio of the pixels The basics of this method can be found in the corresponding article To use this method you must first create a monochrome image from the RGB image The histogram of this monochrome image can now be stretched using a software of your choice Afterward this stretched monochrome image will be used to stretch the RGB image within the NoLIGCRA procedure If you have already a luminance image it can be used instead of creating a monochrome image from the RGB data These are the steps 1 Open the RGB and the stretched monochrome image 2 Select from the Color menu the operation Non linear gradation color retrieval 3 A dialog with two select boxes will appear Select under Luminance frame the stretched monochrome image and under RGB Image the original RGB image 4 Click OK After a short time the stretched RGB image will be opened in a new window 2 H Tomsik P Riepe NOLIGCRA eine Reise durch das All um der Farbe willen Sterne und Weltraum 04 2009 S 86ff Page 35 of 54 Regim user manual 30 05 2013 15 Blink comparator 15 1 Blinking of opened images To blink several opened images select Blink from the View menu The following dialog will appear Blink Select images to blink 0 Reg_Dbi_Cal_ _ 001L fit 2 Reg_DbI_Cal_I_ 002Lfit 3 Reg_DbI_Cal_I_ 004L fit Close Highlight the images you want to blink on the box on the left side Click on Start to start
40. on in Color menu you will see the following dialog Star color calibration Select the color index next to your star G B Result B V R G B Result 162 184 255 0 54 255 246 243 163 184 255 20 59 255 243 235 165 186 255 0 63 255 241 231 167 188 255 20 66 255 239 225 169 189 255 0 74 255 238 221 171 191 255 0 82 255 234 213 175 194 255 0 92 255 228 196 180 198 255 91 15 255 223 184 182 200 255 13 255 221 180 185 202 255 O 1 41 255 211 157 188 205 255 O 1 48 255 205 145 193 208 255 152 255 201 135 202 214 255 O 1 55 255 197 127 210 220 255 21 56 255 193 119 221 228 255 1 61 255 189 113 227 232 255 1 72 255 184 102 242 242 255 1 84 255 178 91 249 246 255 92 0 255173 81 255 249 252 a i a a E Zi D E E 8 Custom B V 0 65 auto background D manual background Number of stars 1 Star search radius 20 Select color index and then a star Cancel Select the color index from the list that is closest to the one of your star or select Custom B V and enter the value auto background if this option is set Regim tries to evaluate the background In most cases this will work very well manual background if set you can choose an area of the image that should represent the background with the mouse Select an dark neutral area Number of stars defines how many stars are used for the calibration Page 32 of 54 Regim user manual 30 05 2013 St
41. or airplane tracks while good values are used for averaging and therefore contribute to increase the S N ratio After combination a window with the statistics is shown It may be used to judge the result The sigma value should be set to a value that results in a low value of rejected pixels while outliers are still eliminated Combination Statistics FFF Sigma 1 8 Ignore zero yes Good 91 622 Rejected 8 378 12 6 Sigma combination of many images The handling is the same as for average combination but the Sigma method is used instead of the average The dialog for sigma combination will appear with the previous selected files The sigma value may be changed The default is 1 8 12 7 SD Mask combination of opened images The handling is the same as for average combination but the SD Mask method is used instead of the average This method combines the advantages of average and median while avoiding the disadvantages During combination the empiric standard deviation for each pixel is calculated and only if the standard deviation does not differ to much from the average standard deviation the values are averaged Otherwise the median is used The allowed Page 24 of 54 Regim user manual 30 05 2013 difference is calculated from the average standard deviation multiplied by the given sigma value This allows the elimination of outliers like cosmics satellite or airplane tracks while good values are used for ave
42. orresponding star in the image will be highlighted by a cross hair On the other hand if you move the mouse over a star within the image the corresponding entry in the list will be highlighted Page 50 of 54 Regim user manual 30 05 2013 25 Batch conversion of image files To convert image files from one format to another select Batch Conversion from the Files menu The following file selection dialog will appear Batch File Conversion Bd Conversion FITS To TIFF M suenen aaa Reg_MedianCombined fit Bi RGB_IMG_0607E0S50D_3 fit Dateiname Dateityp FITS Images Cfit fits fts v OK Cancel Via the selection Conversion you can choose which format you want to convert into another After that you select the files to convert and click OK The following conversion options are available TIFF to FITS TIFF to JPG FITS to TIFF FITS to JPG RAW to FITS Page 51 of 54 Regim user manual 30 05 2013 26 General tips for processing The quality of the result depends on the quality of the raw data So always try to get good raw data Important is to take accurate dark and flat images It is a good idea to take a look into a book about the theory of astronomic image processing The processing within Regim should the be done more or less in the following order PON de 8 Create a master dark Menu Preprocessing gt Setup darks Create a master flat Menu Preprocessing gt Setup flats
43. owever this requires that the images of your next session are registered to the first image of the current session To save and load the settings use the buttons Save settings and Load settings Arbitrary Z For very special purposes it is possible to set an arbitrary zero point using the option Use arbitrary Z For normal photometry this option should not be used as this value is been calculated using the reference stars 5 American Association of Variable Star Observers Page 44 of 54 Regim user manual 30 05 2013 19 3 Advanced settings On the tab Settings you will find some additional setting that are required if you want to send our results to the AAVSO Photometry Star selection Settings AAVSO Observer code WXYZ AAVSO Chart Id 10805AHT Observation type CCD NM Notes 120mm refractor f 6 3 STLOXME Astronomik Green filter Full moon Good transparency For a detailed description of the parameters please see AAVSO Extended File Format on the AAVSO website These settings will also be saved or loaded when you use Save settings or Load settings on the previous tab Page 45 of 54 Regim user manual 30 05 2013 20 Show Histogram To show the histogram of an image right click into the image From the popup menu that appears select Histogram An window will be opened that shows the histogram Fj 0 m94 jpg Zoom 1 2 0 O Hist 0 m94 jpg 22 ee Channel R
44. r regim2gb sh Page 5 of 54 Regim user manual 30 05 2013 43 Start under Mac OS X Open a terminal window and navigate to the folder where you have unpacked Regim Now enter sh regim sh or sh regim2gb sh 4 4 Multi core systems If you have a multicore system please have a closer look at chapter 6 Preferences Page 6 of 54 Regim user manual 30 05 2013 5 Menu description 5 1 Open Save AS Save As FITS Save As Splited FITS Close all Batch conversion Preferences Exit 5 2 Register Register Files Register Sun Register Sun Files Remove Blooming Remove Blooming f Files Normalize Background Normalize Backg in Files Upsample 2x Rotate Left 90 Rotate Right 90 Add Offset Remove Gradient The File Menu The Edit Menu Opens an image file The image will be shown in a separate window Saves the top image as TIFF or JPG file Saves the top image as FITS file Saves the top image separated into RGB channels in three FITS files Closes all open image windows Allows the conversion of many image files into a different file format Opens the dialog for Preferences Will end the program does the registration for several opened deep sky images This is recommended only for a small number of images due to memory consumption does the registration for several deep sky images Recommended for larger numbers of images does the registrat
45. raging and therefore contribute to increase the S N ratio After combination a window with the statistics is shown 12 8 SD Mask combination of many images The handling is the same as for average combination but the SD Mask method is used instead of the average The dialog for SD Mask combination will appear with the previous selected files The sigma value may be changed 12 9 Maximum combination of opened images The handling is the same as for average combination but the maximum method is used instead of the average The brightest pixel will be used as the result This may be useful when combining images through emission line filters e g Ha and OII to a single luminance image Another case would be the combination of star trail images 12 10 Maximum combination of many images The handling is the same as for average combination but the maximum method is used instead of the average 12 11 Subtraction of images To subtract an image from several others the operation Subtract Files in Combine menu may be used The current opened image will be subtracted from selected image files All images must have the same dimensions and type FITS or TIFF 13 Gradients and Offset 13 1 Add Offset This operation in Edit menu may be use to add or subtract an offset per channel to an image The following dialog will appear Offset B Ignore Zero OK _Cancel Page 25 of 54 Regim user manual 30 05 2013 The giv
46. rameters must be set in a way to match the pattern of cameras Bayer Matrix It may be that you must find out by trial and Page 13 of 54 Regim user manual 30 05 2013 error Appendix A contains the recommended settings for some cameras Stretch RAW to 16 bit This option allows you to stretch raw images from a DSLR that usually have 12 or 14 bit depth to 16 bit after calibration but prior to debayering It is recommended to choose this option because otherwise the images will appear quite dark If you activate this option choose the right setting 12 or 14 bit for your DSLR model Color correction scaling Because raw images often have a color cast youn make scaling corrections here The values are in percent Color correction offset Offset for the color correction The values will be added to the corresponding color channel Auto scaling tells Regim to try to automatic calculate the scaling corrections Auto offset tells Regim to try to automatic calculate the offset corrections 7 3 Create Masterdark To create a master dark choose Setup Darks in Preprocessing menu A file chooser will appear to select all the dark frames for the master dark The created master dark will be shown in a new window and can then be saved You can use this master dark later during the preprocessing instead of the single dark frames 7 4 Create Masterflat To create a master flat choose Setup Flats in Preprocessing menu A file chooser will appear to
47. re shown On the upper table the brightness values are shown while on the lower left you will see the image representation With the mouse you can select a single pixel The exact position and the values of the channels for that pixel are shown on the right side The visualization settings black and white point are the same as for the corresponding image window Page 38 of 54 Regim user manual 30 05 2013 17 2 Editing After selecting a pixel you can edit the pixel data in the following ways e By entering values into the entry fields on the right side After changing a value you must press Enter to make the change take effect e By entering brightness values into a field of the upper table After changing a value you must press Enter to make the change take effect e By using the paint mode Select a pixel that you like to copy Then select the paint mode by clicking the paint button Now you can click on all pixels that you want to be overwritten in the lower left table Note All changes are hold in an internal buffer and will not directly change the image The changes will only be copied to the image after choosing Apply changes or when leaving the dialog by pressing OK 17 3 Navigation If you like to move the visible image area you can do that by using the four navigation buttons Already made changes must be applied first or you must confirm to discard them Tip Instead of the navigation buttons you can also use the cursor
48. stems like Adobe Photoshop It is meant to make special processing steps for astronomical images easier These are calibration of raw images dark and flat calibration registration and combination of images Installation and usage is at your own risk Regim is free and may be used in unchanged form However there went a lot of work into this program If you find it useful your donations will be highly appreciated Simply write me an email 2 Supported file formats Regim reads and writes the following file formats e TIFF uncompressed RGB monochrome 8 or 16 bit per channel JPG files FITS files monochrome RGB Raw RAW files of several digital cameras read only To read raw images Regim uses jrawio included or optional DCRaw Thanks to Fabrizio Giudici and all who contributed to jrawio and Dave Coffin the author of DCRaw 3 Installation preferences Regim is completely written in Java and should therefore run on every plattform that has an Java runtime environment JRE version 1 6 0 or higher It was tested on WinXP Windows 7 Windows 8 and Suse Linux 11 4 with JRE 1 6 and 1 7 Path and classpath settings for JRE must be set For processing large images Regim loves to have a lot of memory available You should have at least 1 GB or more Page 4 of 54 Regim user manual 30 05 2013 4 Installation and Start Unzip the file regim zip to your harddisk Within the folder regim you will find the files regim jar regim propert
49. tangular fields use the longer side of the rectangle Do not use a value significantly larger than your field because that may lead to problems identifying the correct stars to Search radius These parameters influence the search for stars within the image and they are described in the chapter about image registration If set Regim tries to find the background values This will work well in most cases Page 30 of 54 Regim user manual 30 05 2013 manual background If set Regim will prompt you to select a background region in the image with the mouse This is useful if your image contains large nebulae Choose a dark neutral background area Note An internet connection is required for this operation to query the Simbad and the NOMAD catalog See also chapter 6 Preferences When the program tries to match the stars in the image against the stars from the catalog an additional window is shown with the distribution of the catalog stars This window allows you to compare the match patterns and may be closed after color calibration Page 31 of 54 Regim user manual 30 05 2013 14 5 Manual color calibration using star colors This function is based on the same principles as the one described in the previous chapter but the star selection is done manually Open the image you want to calibrate and identify one or up to 5 stars with known color index e g with your planetarium program or Simbad Aladin With Manual B V Color Calibrati
50. using star colors Color calibration of astronomical images is a difficult task Often a calibration using a G2 star is recommended Unfortunately the spectral type is not available for most stars and those contain only a small number of type G2 Especially if the image field is small the chance of having a G2 star in the field is low A solution is to use the color index B V of stars for calibration The color index is available for a significantly higher number of stars and therefore the possibility to have several of them in your image field is higher The idea behind is as follows Find a start in your image with known color index B V For this color index Regim knows the corresponding color The system will now change the color scale in a way that the star has the correct color Additionally the image background will be changed to show a neutral color The method is explained in detail in the article by P Riepe and H Tomsik in VdS Journal The automatic color calibration in Regim uses this method It is nor necessary to select the stars by hand Regim will look for the stars and does a plate solving against the star catalog NOMAD It will uses up to 200 stars to calculate the color correction In rare occasions when no plate solving works the manual version of the method may be used After choosing Automatic B V Color Calibration in Color menu the following dialog will appear 1 P Riepe H Tomsik Die Farben der Sterne VdS Journal Nr

Regim

Contents

Download Pdf Manuals

Related Search

Related Contents