UKMON V4 - UK Meteor Observation Network
Contents
1. slow the Analysis may correctly identify a meteor by decreasing ddl e f detected as curve flash it may correctly identify a meteor by increasing ddl e Increasing ddl can improve the accuracy of the analysis for bright meteors e Decreasing ddl can improve accuracy for short meteors Leap The max leap pixels needed to identify an object as a single 50 object If a hi speed moving object is detected as multiple objects it may be detected as a single object by increasing this value If close pair of meteors is detected as one object it may be separated by decreasing this value f1 f2 Sets the frame range to analyze 1 denotes first or last 1 1 frame as appropriate Changing these values may be useful where irregular bursts or break up misdirect the analysis or cause one object to be processed as multiple objects IDENTIFYING PROCESSING ISSUES AND REPROCESSING CLIPS 35 Review the object class and confirm whether something that appears in the clip to be a meteor is identified as such if the identification is incomplete note the clip name 36 Review the log files for EVERY processed clip and examine the angular velocity information towards the end of the log file example below Standard deviations should all be lt 0 3 Note the clip names where the SD exceeds this value Version 1 0 16 10 2012 Page 11 of 18 UK Meteor Monitoring Network Angular Velocity Minmum square Method fno 58 ti2. On XP it may be necessary to first set an administrator password as null passwords are not accepted by the run as command Version 1 0 16 10 2012 Page 3 of 18 UK Meteor Monitoring Network CREATING A PROFILE The profile records information about the camera direction optical aberration and site location A profile is therefore unique to a location and particular camera set up If the camera direction or field of view is adjusted a new profile must be created ADD SOURCE DIRECTORY SEE ANNEX A 1 Select the Main tab 2 Add the top level clip directory The add function opens a pop up explorer window Navigate and select the top level folder holding the UFO Capture data see Annex A When selected the directory will be displayed as follows Note to delete a directory reference right click on the directory and click delete this item on the pop up window Cancel Delete This Item dir CAUFO 3 Select date range al 4 Read refresh the avi clips A list of clips should now be displayed If no clips are displayed either there is no data for the selected date or the profile is set to an incorrect directory Version 1 0 16 10 2012 Page 4 of 18 UK Meteor Monitoring Network SET LOCATION AND ID INFORMATION 5 Selectaclip Ideally the clip should have stars visible and no area of the sky obscured by cloud 6 Select the Profile Analyze tab Note that by hav
3. reference stars A rough alignment is achieved using the saved profile but this needs to be refined 25 Auto link reference stars with stars identified in the scintillation mask auto link Matched stars will be marked with a cross 26 Inspect the match quality indicators ask 303 link 148 Ideally ix avr 0 462 max 4 876 link the number of matches stars gt 50 avr 0 046 max 0 475 12 10 02 4 dpix avr lt 0 3 dpix max lt 1 0 27 Review the magnitude calibration prev edit autolink clearlink lim 7 F ing lv SsaveN save net auto lt SD_ It R 544 reload x1 ink manual link u 5P s om mag del Version 1 0 16 10 2012 Page 8 of 18 28 29 30 31 UK Meteor Monitoring Network Selecting the mg checkbox will display a plot of ccd count against magnitude for the linked stars This should be roughly a straight line and provides another indication of the overall data quality Remove links which do not meet the quality criteria lt SD Clicking lt SD removes links between scintillation masks and reference stars where the link length exceeds lt gt When lt SD is clicked the link and dpix values should decrease Click lt SD as many times as is necessary It is unlikely that the ideal values will be reached on the first iteration Refine the astrometric calibration adj pos all UFO analyse will adjust parameters to achieve a
4. ada RANKA AGORA AUE Ela ar 15 Which files to transfe adikk R Ea ai ssas s dostar lack aba aa a ganda 15 UKMON Server file structure c ccceceeeeeeeeeeeeeeeee eee eeetetaaaeeeeeeeeeeeeeaaaaaaeeeeeeeeeennaa 16 ANNEX A DIRECTORY STRUCTURES aa Goo GG Ak 17 UK Meteor Monitoring Network INTRODUCTION This document is intended as a quick reference guide for processing meteor data using UFO Analyzer UFO Analyser provides a wealth of advanced functionality which is not detailed in this manual For information on the more advanced UFO Analyzer functions please refer to the UFO Analyzer User Manual which can be downloaded PDF from the Sonotaco website see http sonotaco com e_index html INSTALLING UFO ANALYSER UFO analyser is free software available from the Sonotaco website To install UFO Analyser Create a UFO directory on your PC Download the software from the Sonotaco website http sonotaco com soft download UA228 zip Open the ZIP file and extract to your UFO directory Locate the UA2 exe file and create a shortcut on your desktop UFO Analyzer must be run as Administrator the first time that it is used This is vital as failure to follow this step may result in UFO Analyser not being able to save profile information To run as administrator simply right click on the UA2 shortcut and select Vista Run as administrator XP Run as then select the Administrator Account Note
5. 1 0 16 10 2012 Page 14 of 18 UK Meteor Monitoring Network UPLOADING DATA TO THE UKMON SERVER The UKMON server provides a data archive which is publically accessible read only and is there to facilitate the sharing of data for the purposes of orbital analysis with UFO Orbit All processed data should be stored on the UKMON server To upload data to the UKMON server an FTP client is required SETTING UP AN FTP CLIENT There are several good FTP clients which can be downloaded for free Total Commander http www ghisler com Filezilla http filezilla project org These FTP clients all support drag and drop file transfer as well as File Filtering see below To set up the client you will need to create a connection specifying Hostname ukmeteorwatch co uk Username Password Default UKMON directory designated directory tree for the cameras under your control WHICH FILES TO TRANSFER AVI and Bitmap Files are large files avi files can be up to 100mb and are not needed for sharing of data between monitoring stations The only files that should be transferred are jpg files stacked image and thumbnail 4 xml files data files txt files log files With a directory containing 40 to maybe 200 files selecting which files to transfer is quite a challenge However the following steps makes this a simple task Ensure that directories contain only processed data and no unwanted clips noise etc
6. 14 15 UK Meteor Monitoring Network Select Manual link and link matching stars manual link Right click on a reference star Keeping the mouse click held drag the line to the matching observed star and relese the mouse click A line will be drawn between the reference and observed star Repeat for stars covering as much of the field of view as possible Use only those stars that you are confident match with reference stars Perform an initial astrometric calibration adj pos all UFO analyse will adjust parameters to achieve a best fit between scintillation mask stars the reference stars When this process is completed you will see improved dpix avg and dpix max values Refine the calibration Repeat steps 11 and 12 until there is a very close match across the entire field of view Auto link reference stars with stars identified in the scintillation mask auto link Matched stars will be marked with a cross Inspect the match quality indicators ask 303 link 148 Ideally tx avr 0 462 max 4 876 link the number of matches stars gt 50 avr 0 046 max 0 475 E 12 10 02 dpix avr lt 0 3 dpix max lt 1 0 Version 1 0 16 10 2012 Page 6 of 18 UK Meteor Monitoring Network 16 Remove links which do not meet the quality criteria lt SD Clicking lt SD removes links between scintillation masks and reference stars where the link length exceeds lt gt When lt SD is clicked the link and
7. Establish a filter or ignore listr to exclude avi and bmp files This will ensure that drag and drop of a directory will transfer only the files that are needed Version 1 0 16 10 2012 Page 15 of 18 UK Meteor Monitoring Network UKMON SERVER FILE STRUCTURE The UKMON file structure is very similar to the structure created by UFO Capture except there are additional levels for the camera operator and individual camera an operator can run more than one camera The file structure is described in AnnexA Assuming that filtering is set up to copy a day number of days or an entire month of processed data use the FTP client by simply dragging required directory or directories from the source directory on the UFO Analysis PC Care should be taken to ensure that the folders end up in the right place Version 1 0 16 10 2012 Page 16 of 18 UK Meteor Monitoring Network ANNEX A DIRECTORY STRUCTURES UFO suite directory structure created automatically by UFO Capture Top Level a Es Year Month Day Detect Mask bmp directory Video clip avi Capture xml file Stacked image jpg AL Thumbnail jpg rm Analysis log txt Analysis xml file 2012 201201 20120101 detlog csv 20120102 201202 20120202 detlog csv 2013 201301 20130101 detlog csv Top level clip directory is the directory 20130102 set up in Creating a Profile step 2 Version 1 0 16 10 2012 Page 17 of 18 UK M
8. UK Meteor Monitoring Network Meteor Data Analysis _ Using UFO Analyser O 2012 UXKMON TABLE OF CONTENTS INTRODUCTION ask R Arda ki 3 INSTALLING UFO ANALYSER zasad R AGES AAAA AP O ORA EG 3 GREATNGA PROFILE sas anseia alta ali dnia 4 Add source directory a occwo RR DR RR E SSE EEEE n EEren 4 Set location and ID Information aa anawanadiwiei nii A AAAA Laska 5 Define the camera setup eee eeeeeeeneaeeeeeeeeeeesaaaaaaeaeeeeeeeeesegsaaaaeeeeeeeeeenene 5 Optical aberation and astrometric calibration aa 5 PROCESSING AVI CLIPS ses nooo RAR ORL R AL a wean 8 Select the avi clips to be processed eee aaa aaa aaa aaa aaa aaaanaaaaaae 8 Refine the astrometric calibration eo sosu eee aaa aaa aaa aaa aaa ana aaa aaaw0a 8 Apply refinement to all clips for the selected period 10 Process and analysing the avi clips essere 10 REFINING THE ANALYSIS RESOLVING PROBLEM CASES 11 Identifying processing issues and reprocessing CIiPS ccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 11 Creating detection Masks manually eee eee aaa eee eeeeeeaaeeeeeeeeeeteeeenaeeeeees 12 Displaying trail maps and ground maps eee e ee aaa aaa aaa aaa aaa aaaa aaa aaeaceca 13 PREPARING FOR UFO ORBIT s sasalasia asia kla AE A dass dna AAA ZA 14 UPLOADING DATA TO THE UKMON SERVER 15 Setting up a FTP Client
9. best fit between scintillation mask stars the reference stars When this process is completed you will see improved dpix avg and dpix max values Inspect the match quality indicators ask 303 link 148 Ideally oc avr 0 462 max 4 876 link the number of matches stars gt 50 eg avr 0 046 max 0 475 2012 10 02 dpix avr lt 0 3 dpix max lt 1 0 If the quality parameters fall outside the ideal range repeat steps 25 to 30 as many times as necessary Even if a good fit is reached with a high number of linked stars the accuracy of the analysis process can be improved significantly by repeating these steps to achieve minimum dpix avg dpix max It may not always be possible to achieve acceptable values of dpix avg dpix max with a link value 2 50 if for example partial cloud cover reduces the number of stars visible to the camera Lower values are acceptable the principle of reasonable endeavour should apply Version 1 0 16 10 2012 Page 9 of 18 UK Meteor Monitoring Network APPLY REFINEMENT TO ALL CLIPS FOR THE SELECTED PERIOD 32 Select the Main Tab 33 Refresh the avi clips for the selected date Refreshing the database applies the calibration to all Clips Warning do not select any clips before having refreshed the list Selecting a clip will lose the re calibration and will require steps 24 31 to be repeated PROCESS AND ANALYSING THE AVI CLIPS 34 Use the A
10. dpix values should decrease Click lt SD as many times as is necessary It is unlikely that the ideal values will be reached on the first iteration 17 If the quality parameters fall outside the ideal range repeat steps 12 to 16 as many times as necessary Even if a good fit is reached with a high number of linked stars the accuracy of the analysis process can be improved significantly by repeating these steps to achieve minimum dpix avg dpix max 18 Save the profile save P Profil es are saved in the prof subdirectory of the UFO Analyser programme directory Version 1 0 16 10 2012 Page 7 of 18 UK Meteor Monitoring Network PROCESSING AVI CLIPS SELECT THE AVI CLIPS TO BE PROCESSED 19 Select the Main Tab 20 Select the date range for the avi clips to be analysed Date all range latest ie Ca Es Eo Es 21 Read refresh the avi clips for the selected date A list of clips should now be displayed If no clips are displayed either there is no data for the selected date or the profile is set to an incorrect directory Note that if the class column is populated this indicates that the clips have been processed already REFINE THE ASTROMETRIC CALIBRATION 22 Select the Profile Analyse Tab 23 Select the Mask Editor to display the image mask 24 Select Link ink To measure the optical aberration and to provide an astromnetric calibration observed stars are matched with
11. e is no data for the selected date or the profile is set to an incorrect directory To display a ground or trail map the clips must be processed Click the Trail Map tab to display the trail map Click the Ground Map tab to display the ground map Using controls on the page the display can be filtered to show only individual meteors and meteor classes More details are provided in the UFO Capture Database Version 1 0 16 10 2012 Page 13 of 18 UK Meteor Monitoring Network PREPARING FOR UFO ORBIT Subsequent processing by UFO Orbit requires two additional files to be created M csv file analyzed results R csv file Time Magnitude list 56 Select the Main tab 57 Select a date range 1 of the month plus n days e g July plus 31 days Date al range latest Y fear IM Ap Dl p 21 pays 58 Read refresh the avi clips for the selected date range A list of clips should for the entire month should now be displayed If no clips are displayed either there is no data for the selected date or the profile is set to an incorrect directory 59 Output the M csv file M csv is saved into the directory specified in Main sheet gt Mosvl P gt M csv contains the results for all meteors in the clip list You 60 Output the Time Magnitude list Ramil R csv is saved into the directory specified in Main sheet 61 Move the R xml and M csv data to the month directory for the selected data set Version
12. eteor Monitoring Network UKMON Server directory Structure o ns s Church Camera 1 2013 Crookham Clanfield Camera 1 Camera 2 Version 1 0 16 10 2012 Page 18 of 18
13. ing previously selected a clip the location and ID data is auto populated from the xml output by UFO Capture Ensure that the latitude longitude and altitude are correct 7 Select the Mask Editor tab this will overlay reference stars onto the still image Note that the reference stars and images stars scintillation mask do not yet align DEFINE THE CAMERA SETUP 8 Enter camera location information Fovh camera field of view degrees G az azimuth measured from the north toward the east 0 for north 90 for east 180 for south 270 for west ev altitude toward zenith 90 rot rotation of the view degrees Ffoh 68 5133 qo e 05180 ate 58 3H Fr Foka 0 0010 pk3 0 022617 k2 00027 ode 013 dy 1020 Foka H lv az 70 0832 Mev 60 6528 move OPTICAL ABERATION AND ASTROMETRIC CALIBRATION 9 Find the relation between scintillation masks blue points and reference stars yellow points If necessary you can change the view settings manually Click ev rot spin button to change the values and achieve a near alignment az ev 10 Click Link link To measure the optical aberration and to provide an astromnetric calibration observed stars are matched with reference stars This is don manually initially to achieve a rough calibration and then automatically to achieve a fine calibration Version 1 0 16 10 2012 Page 5 of 18 11 12 13
14. me 1 160 av 14 11 n 4 sd 0 027 fno 59 time 1 180 av 14 11 n 4 sd 0 027 fno 60 time 1 200 av 14 10 n 4 sd 0 027 fno 61 time 1 220 av 14 09 n 4 sd 0 027 fno 62 time 1 240 av 14 09 n 4 sd 0 027 fno 63 time 1 260 av 14 08 n 4 sd 0 027 37 Select the Profile Analyze Tab 38 Select the first clip to be reprocessed optionally the astrometric calibration can be refined for this clip by repeating steps 25 to 31 above 39 Adjust ddl leap f1 or f2 this will be trial and error but see guidance in the table above It is recommended that only one parameter is changed at one time 40 Click Analyze to reprocess The analyze function processes only the selected frame In analyze some cases the parameter settings may result in the meteor going undetected If this occurs change the value and repeat 41 Inspect the assigned class and log file If correct identification of a meteor is still not achieved or SD lt 0 3 is not achieved then repeat from step 20 Some meteors simply will not resolve accurately Again the principle of reasonable endeavour applies If SDs lt 0 3 just try get SDs as low as possible It gets easier with practice 42 Repeat steps 38 to 41 until all problem clips are re analyzed CREATING DETECTION MASKS MANUALLY This is a last resort technique to solve processing problems e g where UFO Analyzer detects the meteor path inaccurately or where there are high SDs tha
15. nalyze All function to bulk process the clip list analyze all Analyze all will process all clips in the clips list If a clip is selected Analyze All will process from the selected clip to the end of the list For each clip analysis creates two more output files in the selected directory setting parameters for each camera into p_ XML analyzed results and adapted camera profiles A XML A txt log file As each clip is processed the object count class e g sporadic or association with a known shower magnitude and duration are added to the clip list clip_name e class mag SEC M20121002 001458 Chu 1 J5_sPe 0 5 0 1 M20121002 003356 Chu 1 spo 1 1 0 8 M20121002 011104 Chu 1 spo 0 9 0 7 M20121002 015940 Chu 1 spo 13 0 8 Version 1 0 16 10 2012 Page 10 of 18 UK Meteor Monitoring Network REFINING THE ANALYSIS RESOLVING PROBLEM CASES The above batch analysis of clips uses standard settings for all clips UFO Analyzer will encounter problems processing some meteors and sometimes the accuracy of the analysis is not sufficient In such cases clips may need to be processed individually To improve the quality of processing there are four parameters which can be changed on the Profile Analyze tab E E E E Parameter Function Recommended value DDL Increases or decreases the brightness change threshold in 5 the detection area n u n u e Ifan object detected as none noise
16. t cannot be resolved by changing the analysis parameters 43 Select the Mask Editor tab 44 Select the Edit button edit The edit function allows you to paint the detection area onto the image mask 45 Select rectangle and area mask checkboxes dot T opt mask This has the effect of masking the entire frame so that C line areamask there are no areas of detection ceccesecae seeqpecesd Version 1 0 16 10 2012 Page 12 of 18 46 47 48 49 UK Meteor Monitoring Network Using the cursor paint the entire frame as an area mask using the rectangle paint function C dot Fa opt mask The width of the line can be set using the size fs ine areamask Parameter The painted detection area will be the only SS i hat is analysed A thin line along the e area if the frame t y A scl mask path of the meteor can be used to restrict the analysis darea process to a specific area or direction Select line and d area Using the cursor paint a detection area as a line along the path of the meteor Repeat steps 39 31 above DISPLAYING TRAIL MAPS AND GROUND MAPS 50 51 52 53 54 55 Select the Main Tab Select the date range for the avi clips to be analysed Date all f range latest Emau o EAN PY lima Read refresh the avi clips for the selected date A list of clips should now be displayed If no clips are displayed either ther
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