QHY8L User Manual
Contents
1. Service Temperature of this camera is from 20C 4F to 30C 86F Relative Humidity amount is from 0 to 90 User Manua How to avoid CCD sensor moisture in high humidity environments In certain environments when the temperature of the camera drop below the dew point dew or ice may form on the camera This is simply a law of nature However ice and or dew which form on the surface of CCD chip or optic window will impact your images lf dew or ice forms on the surface of CCD the water can flow onto the electric board which leads to short circuit or data corruption It is critical that you avoid dew or ice formation during operation on the CCD chip What if dew forms on the surface of CCD chip The internal space of CCD camera is relatively airtight If dew forms on the surface of CCD chip this indicates that there is higher relative humidity in the CCD chamber You must dry the chamber using the following method 1 Screw off the air socket screw on front part of CCD sealed chamber 2 Put fresh silica gel in silica gel tube Before putting silica gel a small piece of cotton is needed to create a barrier between the hole nm the tube and the chamber ra LA a ae rA ORnYCCD 3 Screw silica gel tube into the connection of the sealed chamber Make sure the rubber O Ring is present to ensure an airtight connection 4 In about 24 hours the proper relative humidity should be restored in the CCD sealed chamber If y2. calibration means to calibrate the CCD with a BIAS field a DARK field and a FLAT field You can completely remove thermal noise of the CCD through proper calibration Additionally you can obtain better image highlights You can remove dark spots which are caused by dust on the surface of the CCD Image calibration is a critical step for serious astronomical photography If the camera of QHY8L is connected successfully AART will show the window of temperature control Please set Target as what you want to be required value of temperature 8 There has a Setting column which is located the window of CCD Please select pixel merge mode Set the exposure time under the window of CCD Click the button of START and shoot a image If you want to get a color image in the state of mode 1 1 you need to use the color transformative function of CCD Color Synthesis belong to the menu bar of COLOR Select RGE image and the advisable value of X Y and OFFSET so click OK In order to obtain accurate calibration information you need to use the QHY8L temperature controller CCD should be set in fixed temperature state And temperature should remain the same when shooting The temperature control of EZCAP is located in Temp Control of the menu bar of Setup You can stretch the temperature control section on the right of the window of Temperature Control to set the temperature what you want And then select Auto Control that means CCD has be
3. from 0 to 63 OFFSET is the ADC voltage offset setting The correct setting of OFFSET and GAIN can change the CCD camera system gain which match CCD output signal range and scope of the quantitative ADC to get the best dynamic range Usual Calibration Method 1 Set the Gain 0 2 Set the exposure time to 0 and cover the lens this is a BIAS frame 3 Watch the local average of the captured images can use the Noise Analyze function of EZCAP 4 The ideal average value is around 500 to 1000 If the value is higher then you should reduce the OFFSET If the value is lower then you should the OFFSET eat steps 2 4 to obtain the ideal OFFSET value User Manual 6 Open the lens cover and increase the exposure time Use a uniform light source such as light boxes or an LCD screen and take a saturated exposure of the image 7 Watch the local average value of the captured images if the value is is less than 60 000 you need to increase the value of GAIN if the value is 65535 then reduce the GAIN 8 Repeat steps 6 7 to obtain the appropriate GAIN value 9 Under the GAIN repeat steps 2 4 and obtain more accurate OFFSET Note A For some QHYCCD products when you use bin modes of 2x2 3x3 4x4 images may reach 65935 even with gain set to 0 QHYCCD nn rrer rnea User Manual QHY8L mechanical dimensions QHY8L back focus distance The back focus length of QHY8L is 20mm as shown without the center and angle adjus
4. 1mm 3 Tip positive Please note the reverse polarity will cause damage for camera and a plug with a different internal diameter won t work QHYCCD reoeo User Manual STANDARD EQUIPMENT Make sure that the following items are included in your camera package If anything is missing contact the retailer from which you purchased the camera a 4 DC102 DC adapter 1 QHY8L Camera Center and Tilt 5 9 PIN power cable Adjustment Ring a oa S Silicon gel tube one QOHYCCD Accessories Sold Separately Contact your dealer for pricing and ordering information 1 100 240V TO 12V AC adapter Full Air proof box with 2 electric heating silicon gel User Manual Camera Interface 1 Camera Front Part 2 CCD Chamber Air socket LA 3 M42 0 75 Inner screw Depth 3mm ponm 4 IR block optic window 5 Heat Sink Exhaust 6 9pin power socket 7 USB socket 8 Guiding Control signal socket RJ11 9 Heat sink air intake ONYCC D nn User Manual Camera Software Installation 8 Connect DC201 with 12V input The LED of Please download last QHY8L system driver from DC201 15 15 5 should be on http www qhyccd com download html WINUSB 64 32version This version support Download EZCAP software from windowsxXP windowsVista and windows 7 64 and http www qhyccd com download Html Click scan 32bit version camera from main menu The QHY8L will be highlight Check it on o Ru
5. AGE CALIBRATION OF QHY8L 2 2 s2 seeseeesensseesenee 29 20 CAPTURE BIAS IMAG E n n n 20n o0snscnsnsnnensoneaesnentsnencentensensntenentenentanse 30 21 CAPTURE DARK IMA GE n n2ne nsnaneeneneeneneaneneannnsenensnnenensasenene 31 22 CAPTURE FLAT IMAG Eq n n 2n2cneneonenennsnenrenensenensansnsanensenensnseneneasenene 32 23 CAPTURE DARK FLAT IMAG E 2 2 n2 snnenensnnenennnnenennnnemennemenns 32 24 Guiding with QHY8L in MAXIM DL 2 ne nanennanennenen nee 32 User Manual QHY8L CCD Camera User Guide Congratulations on your new QHYCCD series purchase Make sure you read this guide carefully before operating your new camera Time spent reading this guide will save you frustration and maximize the enjoyment of your new QHY8L CCD Camera Precautions The larger surface area of the Large format CCD chip and cooling system are more fragile than a small or medium sized CCD Take extra care when transporting and storing the device Any significant impacts may damage your equipment Connection Sequence 1 Connect USB cable from camera to PC 2 Connect 9 pin cable from camera to DC201 3 Connect 12V power to DC201 Disconnect Sequence 1 Disconnect 12V input power from DC201 2 Disconnect 9 pin cable from Camera 3 Disconnect USB cable from PC Power to the DC201 needs to be 1 4A 5A regulated DC power supply 2 Internal diameter of connection to DC201 is 2
6. ONYGG nn User Manual QHY8L Cooled Color Astronomy CCD Camera User Manual QHY8L User Manual V1 0 p b rt a F CONTENTS 1 SAFETY PRECAUTIONS n n2 n n c0neonsassnscnentssensensntseeanenteesnssnsenensenenenesnenss 2 2 STANDARD EQUIPMENT s s s2sessssnenenensssnenensnsensensnensenenssnnncnene 3 3 SEPARATELY SOLD ACCESSORIES 00 n0 00encnenennnnennnnnnnnane 5 4 CAMERA STRUCTURE AND INTERFACE CONNECTION 6 5 CAMERA DRIVERS INSTALLATION AND QUICKLY MASTERING 7 6 DC201 IINPUT VOLTAGE RANGE 2 20 200seesnensenennenesnenesnennenennenennenee 9 7 SERVICE TEMPERATURE AND HUMIDITY OF CAMERA 2 2 2 2 9 8 HOW TO AVOID CCD SENSOR MOIST IN HIGH HUMIDITY 10 9 NOTES ABOUT LONG TERM USING AND REMOTE OBSERVATORY 12 10 PROTECTION OF COOLER ceeeeeeenennnnnnnnnannnnnnnnnnnnnnnnn nn 15 11 CLEAN THE SURFACE OF CCD CHIP 2 0 00nnnnnnnnnnnnnnnnnnnne 16 12 SET ON THE GAIN and OFFSET 2 2 n2 20n2neenennsnennensenenneneonennsnennene 17 15 QHY8L CHANICAL DIMENSIONS 0 00 0 22 eneenenenennne 18 16 QHY8L Back Focus Lenght 19 17 THE METHOD OF THE CENTER AND ANGLE ADJUSTMENT RING 20 18 SOFTWARE ABC COURSE 2 n n n n nse2nseensaesnansanensenensnnensenenennnnen 21 19 IM
7. P can control temperature manually or automatically for the QHY8L camera Choose Temperature Control from the Setup menu There are three temperature control Image Area options in the window TEC OFF Manual and Auto Control TEC OFF will turn the cooler of the camera off immediately Manual will adjust the power of the cooler It can be adjusted by the PWM regulation section on the left The range of regulation is from 0 to 100 Auto Control will adjust the power of the cooler dynamically to maintain a constant sensor temperature set by the user Over Scan Area Images which are produced by EZCAP will cover the area of Overscan and Optic black as shown in the reference image on the right of this page Data from these regions can be used for CCD image preprocessing But not all software capture produce this kinds of area l CJ E t ee i x t f he 4 P i t Kk 3 i ape 3 5 fm r S iki Fi MAXIMDL ASCOM Connection Mode Steps Please download the latest version of the ASCOM Platform from http ascom standards org Install ASCOM and ALSO download any UPDATE that is available http www ghyccd com download htm download and install the ASCOM driver of QHY8L Run MAXIMDL software Select the camera icon in the toolbar The Camera Control window should appear Press Setup Camera button inside this window Select ASCOM from
8. Start to begin guiding Click Graph to show the guiding graph Note QHY8L could use the False BIN11 Mode to guide This mode uses the 2 2bin but the image is zoomed in to the size of 1 1bin Because the 2 2bin mode get a higher sensitivity it is suit for guiding
9. alibration data as image post processing of the captured images fr fal al a ORnYCCD Guiding by using QHY8L in MAXim DL QHY8L contains a guiding spot it can be used as a guiding ccd with ASCOM QHY8L uses 1 1 bin and normal download speed default It can use subframe mode to guide 1 2 Connect the QHY8L and the equatorial mount s guide spot Run MAXim DL choose View Camera Control Window choose Setup Setup Camera Camera Model ASCOM Advanced in the ASCOM Camera Choose window choose the QHY8L StarSenseSci and click the Properties button set Gain and Offset and so on After setting click the Connect button Choose the Guide table in the Camera Control window Set expose time Click Settings open the Guide Settings window Click the Reset button in the Expose Setting area the subframe will use the full frame click OK to save it Choose Expose click Start QHY8L will take a photo 10 11 12 13 User Manual After the photo show adjust the Screen stretch to watch the suitable image Click the Settings button again open the Guider Settings windows Use the mouse to select an area on the image this is the subframe click OK Generally it contains a star which will be used as the guided star Choose Expose click Start to take a photo the photo is the subframe which was selected Choose Calibrate After calibration click Options choose No Calibration Choose Track Click
10. atically Set GAIN to 0 OFFSET 125 Setting Exposure time Click the button Snap the camera will start to exposure and show image To stretch the Histogram select the appropriate range The Histogram intensity usually can be observed stretch at the different section make this area is just the scope of Histogram yyCC D User Manual Click the Live Preview option This lets you achieve a continuous preview We recommend select the shorter exposure time 100 500ms for obtaining faster preview speeds Adjust the lens or the telescope focus and get the a shape image Stop Live Preview Select a good star point or target in the image area using the left click of the mouse Open the FOCUS column Click the FOCUS button to get a focus image 3 Adjust Histogram of gray column to choose the appropriate range Click Live Focus option again Click the area of image to get a more precise target At this point it will show the analytic curve in the Screen View column and a 5x zoom focus image While it s exposing the FWHM column will show the width of stars and the intensity of the star point peak Generally smaller FWHM and bigger peak intensity indicate the better focus When you finish Focusing open the Capture column and start shooting Set the appropriate value of Gain Offset and exposure time Select 1x1 Binning mode select the low read out speed Click Capture to shoot User Manual EZCA
11. create dust donuts and other artifacts If there is only a small amount of dust we suggest just using flat fields calibration to remove them Cleaning tips You can open the front cover of CCD to clean the surface of chip You don t have to open the front cover of CCD this can be delete because ccd front cover can not be open screw the front cover of CCD counterclockwise and clean the dust off of the surface of CCD with a manual air pump If there is dirt that doesn t come off with the air pump you can use lens paper or a commercially available SLR camera cleaning kit Here is the correct procedure to follow with the lens paper 1 Wash your hands with soap 2 Take a piece of lens paper and fold it once or twice do not fold too many times as the lens paper will get very sharp and the edges may User Manual 3 Blow at CCD in a breath and use lens paper to clean the CCD surface Make sure to maintain an appropriate pressure for CCD with your hand 4 Finish cleaning and reinstall the front cover of CCD If there is higher relative humidity in your environment it is necessary to dry the inside of the CCD sealed chamber Setting the GAIN and OFFSET Unlike many other manufacturers QHYCCD leaves the the internal settings of the camera ADC GAIN and OFFSET settings so that you can get the absolute best performance out of your CCD GAIN is the pre ADC programmable gain amplifier gain setting the range is
12. el s R 4 3 2 AA FIE AN EE SA gt sle se s sl s s s s s g e o O lt oO LS A a gt 8 t 2 e Hel qe al Ll Rr ar yyCC D User Manual About controlling for BLOOMING The method of avoiding thermal shock is this To QHY8L CCD chip have the 100dB anti avoid reaching maximum power of cooler when overflow foundation Anti overflow capacity is booting machine Ensure to increase gradually slightly lower than QHY8L of 100dB So there is power of cooler When stopping machine work possible to overflow for shooting very bright target after reduce gradually power of cooler shutdown For the overflow problem of SONY CCD chip and turn off the power of machine please install mechanical shutter to solve If mechanical shutter is indeed necessary please consult QHYCCD or your area dealer Protection of Cooler The double cooler of QHY8L can reach to 33 35 Centigrade difference in environmental temperature So need to avoid thermal shock Thermal shock means internal stress of cooler happen to change due to expansion or contraction caused by the rapid changes in temperature of cooler Strong thermal shock will shorten use age of cooler or even irreparable defect of cooler QOHYCCD ff the CCD glass surface Clean the surface of CCD chip lf dust coats the surface of the CCD it will impact the your images and possible
13. en the Note In order to improve the focus function homoeothermic control and the speed of preview There is a Button It will take some time to achieve the target aot OCU VARGO Ww WOU Aal CCLI ANG temperature for CCD You have to wait a moment until the temperature of CCD has been stable you can start to shoot and calibrate image Select high download speed for preview and focus QOHYCCD The Calibration Principle of CCD Image Calibrated image L B D B F B L D F B There L is the actual shooting image D represents the Dark Frame images B represents BIAS image and F means the FLAT image Note In most cases there maybe appear some Vertical stripes in the image which is formed by lots of BIAS or DARK image stacked This is normal There will not appear such Vertical stripes after this image is calibrated Capture BIAS Image BIAS image means exposure time of images is Zero You need avoiding any light to enter into CCD sensor when you shoot image So you have to cover the lens cap of camera Set Exposure Time to 0 and then use the low speed to shoot many 10 50 sheets BIAS image Save and overlap them Use the function of average overlapping do not match with position to get one BIAS Master image Save this image User Manual Partial Cropped BIAS Image B Capture DARK Image DARK Image means the image which of the exposure time is the same as the time it took Officially You have to avoid a
14. era and You should shut off all power after you are Remote Observatory finished using your CCD If the camera is still on via USB any ice crystals around CCD chip will If you have to keep the camera working for a long time melt which can corrupt or short circuit the PCB or the camera is working in a remote observatory board please follow the following procedures and we recommend that you consult your area dealer for more details 1 Before using the camera always check that the CCD chamber is sealed and dry If there is a lot ice crystals around the chip this indicates a high relative humidity in the CCD chamber You must dry the CCD chamber 2 Check the air tightness of CCD sealed chamber You can check this by increasing the internal pressure of the CCD sealed chamber with a hand pump do not exceed 1 01MP Then watch if the pressure drops If the pressure drops quickly this indicates a lack of air tightness You need to check if the front cover is screwed on well 3 Put effective desiccant in the dry tube and connect continually with CCD for a long term drying 4 Don t supply power to the CCD for several days or even weeks if possible Use a power controller to control 12V input or AC input QHYCCD User Manual QHY8L CCD Chip Read out Mode and The issue is when QHY8L use the long expose time Image Calibration mode after the 1st frame exposes over and it is QHY8L CCD has a 2 channels 2 frames chip read
15. ing out the 2nd frame is exposing When the 1st There are several things you need to pay frame is reading out the AMP light will show but the attention to during the shooting and image 2nd frame is exposing all the same So the AMP light process will be photoed on the 2nd frame The AMP light s The first frame read out the B amp Gb pixels the time is about 1 45s high speed download or second frame read out the R amp Gr pixels When 3 47s low speed download The AMP light is yellow the 1st frame has exposed done and it is It can be calibrated by taking dark frames reading out the 2nd frame is keep exposing When using 2 2 or 4 4 mode QHY8L use the Thus the 2 frames will get a different expose progressive so there is no AMP light problem occur time QHY8L uses 2 modes to get the solution Frame readout mode When the expose time is short less than 1 45s ii for high speed download 3 47s for low speed iy 13 download QHY8L will expose twice and the i j f SA expose time are the same QHY8L will read out the 1st frame after the 1st expose and read out the 2nd frame after the 2nd expose However this mode is not suit for long expose time At this time QHY8L will use another mode It take only once expose and the special hardware in the QHY8L will compute the data for keeping the same expose time with the 2 frames L ODADA h EA 2 nae R Ha R 10 Heb R fT R 9 8 T 8 Hel H
16. n installer Ti Check if DC201 s FAN and TEC LED on and check Connect the camera to computer with USB calbe if the fan of QHY8L running Do not connect 9pin power cable this time System will find new device Wait till installation finished In XP select No gt Next Step gt Install automaticly After successfully installed the LED of camera will flash Download and run the the driver version detector software from www ghyccd com download Html Click QHY8L button Check if it the installed driver the lastest version w Use 9pin power cable connect DC201 and QHY8L Please note the side with EMC ring should connect to DC201 DC201 Input Voltage Range The DC201 requires a regulated 12V input The normal input range is 11V 13V If you exceed 13V common when you are using an external battery the higher voltage will reduce the life of the TEC and Fan If you exceed 13V please limit the maximum power of your Cooling Settings This can be controlled via lEC PROTECT in the Favorite menu of EZCAP Please select it If you are using the ASCOM driver this has been set automatically QHY8L s power is from 3 6W to 30W which is depended on the TEC s PWM power So the power supply should be larger than 4A QHY8L use the one stage TEC the temperature can be cooled below 30 degree centigrade by the surroundings It should be used the special DC201 for QHY8L Service Temperature and Humidity of Camera
17. ny light enter into CCD sensor Therefore you have to cover the lens lid The exposure time should be set the same with shooting time and then use the low speed and mode 1 1 to shoot about 10 50 sheets BIAS image Save and overlay these images to form a Dark Master image Save the image ORYCCID ___ a d User Manual Capture FLAT Image FLAT image can be used to rectify the problem of the center light but the edge dark which caused by the vignette of optical system It also can be corrected the problem due to some small dust on the CCD sensor glass surface Flat field calibration method is this you need uniform luminous lightbox The lightbox will be placed in front of the telescope You would set the appropriate exposure time then continuous shoot Partial Cropped DARK Image D 10 50 frame flat field images Save and overlay these images to form a FLAT Master image save the image To obtain an accurate flat field calibration Please note the following matters You have to take immediately flat field images before the shooting or after finishing shooting Like do this in order to avoid dismantling the device dust on CCD surface and vibration of CCD cause the change of location The scope of exposure is better for 30 of the maximum dynamic range which means you have gotten DARK image which be calibrated by BIAS Field D B 20000 30000 pixel of flat field image Images of BIAS Master DARK Master and FLAT Master will be c
18. ou need to dry the chamber faster you can use the following method Using compressed air or a hand pump with dry air make dry air go through the silicon gel tube Meanwhile slightly unscrew the front cover of CCD The air current will flow over the CCD sealed chamber through the air connection of the CCD Then air will flow out from the gap between the unscrewed front cover of CCD and the body of CCD After a few minutes the relative humidity in the CCD sealed chamber will get lower Please note too high of a pressure can damage the CCD chip and the cooling system User Manua Dew is formed on the IR cut glass lf the cooling temperature is too low in a high humidity environment the CCD optic window may collect dew This is because the temperature of the window is too low The QHY8L uses 3mm thick optic glass Although this glass should prevent dew follow this procedure if you run into problems 1 Install M42 to M42 heater produced by QHYCCD The heater will raise the temperature to avoid dew forming Consult your area dealer to purchase 2 Reduce the cooling power The best temperature range for QHY8L is from 15C to 20 C Please adjust cooling temperature according to the ambient temperature 3 Don t put the glass window of the CCD upside down Cold air will focus on the optic windows if it is upside down It will cause lower temperature of optic windows a HYE D User Manual Notes about Long term use cam
19. t Camera On the window of Preview check if the color is right And then click OK You can obtain the color image after a while If the color is not right please try to change the value of OFFSET X Y on Convert Color menu include the type of camera on Select Camera menu Note In order to improve the focus function and the speed of preview There is a Button In Fast Setting window You can click it and Select high download speed for preview and focus User Manual AstroART ASCOM Connection Mode Please download the latest version of the ASCOM from http ascom standards org If there is the latest UPDATE of ASCOM do it together Install ASCOM and its UPDATE According to the instructions about driver connection of ASCOM from http www gqhyccd com download html download and install the ASCOM driver of QHY8L Install AART3 0 and AART4 0 updates You will copy AART s CCD link library piccdgui dll download from the AART website to AATR installation directory Then install the driver AstroART of ASCOM Run AstroART software select CCD Camera from the ithe Plug in menu bar which will be appeared the window of CCD Camera Control Panel Select types of Imaging Guide Camera for ASCOM from the columns of Setup Click the button of SETUP select QHY8L CCD Camera and set appropriate value of GAIN and OFFSET in menu bar of Properties then Click OK yyCC D User Manual Image Calibration of QHY8L Image
20. the menu of Camera Mode Click the button of Advanced button Select types of QHY8L CCD from the window of ASCOM Camera Choose and then click the button of Properties to set some usual value of parameters like the value of GAIN OFFSET and the speed of read out Click the button of OK and back to the window Camera Control click the button of CONNECT Select the tab of Exposure from the window of Camera Control 2 nk 28 5 NR User Manual Select option of Find Star and set the exposure time Click to select the No Calibration from the popup menu of OPTION 8 Set the merge mode with X and Y like choose X 4 Y same Press the button of Start to exposure and shoot fg When finished shooting images will be showed You can use the tool of Screen Stretch to adjust the stretching of image Color Image Taken The Binning modes of QHY8L include 2x2 4x4 These two modes only output grayscale image So these two modes are only useful for focusing and previewing If you want to get a color image please select the combine mode 1x1 Changes from the above steps number 8 Set the merge mode with X and Y like choose X 1 Y same Press the button of Start to exposure and shoot Soon image will be showed in form of RAW which are still grayscale image Select Convert Color from Color menu belong to MAXIMDL set OFFSET X 0 Y 0 On Convert Color menu Choose Generic RGB from the dropdowns box of Selec
21. tment ring lf you connect the center and angle adjustment ring the rear cut off distance will increase by about 3mm a RF a Or YCE Using the Center and Angle Adjustment Ring There is a M42 0 75 thread on the QHY8L which can connect directly with the telescope If it needs adjustment then the center and angle adjustment ring should be used Center adjustment unscrew the three screws around the ring The adjustment ring will sets into the dovetail slot of QHY8L By adjusting the location of the three screws you can achieve about 1mm center adjustment Angle adjustment slightly unscrew the three screws There is a small screw on the slide side of the ring which adjusts the size of inclination angle If you rotate QHY8L relative to the adjustment ring you can obtain the correct angle After finishing the adjustment you should lock up the three screws User Manual Simple first light Although QHY8L is supported by many 3 party software we still suggest you strongly to use the software distributed with the CCD EZCAP Especially when you are first using the QHY8L EZCAP will be able to correctly verify your camera being able to work regularly or not EZCAP Run EZCAP exe Choose Scan Camera in Camera menu lf computer system find the hardware EZCAP will show QHY8L click QHY8L At the same time the Preview group which is located on the left of EZCAP will open autom
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