ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

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x CONTENTS 19.3 A beam-switch observation caveat . . . . . . . . . . . . . . . . . . . . . . . . . . 214 19.4 Advanced slicing of beam-switch data (CAM03) . . . . . . . . . . . . . . . . . . 214 19.4.1 Concatenating intermediate SCDs in a beam-switch observation . . . . . 214 19.5 Advanced slicing of CVF data (CAM04) . . . . . . . . . . . . . . . . . . . . . . 215 19.5.1 Up and down CVF observation . . . . . . . . . . . . . . . . . . . . . . . . 215 19.5.2 Mixed LW and SW CVF observation . . . . . . . . . . . . . . . . . . . . 216 19.6 Advanced slicing with x slicer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218 19.6.1 Files, directories and x slicer customization . . . . . . . . . . . . . . . . 218 19.6.2 Slicing STore Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219 19.6.3 Slicing ERD files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 19.6.4 Slicing TDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 19.6.5 Selecting slicing variables . . . . . . . . . . . . . . . . . . . . . . . . . . . 222 19.6.6 The x handle slice window . . . . . . . . . . . . . . . . . . . . . . . . . 225 19.6.7 On Target Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 19.6.8 Handling big datasets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 19.6.9 The save slicer file button and slicer to cia . . . . . . . . . . . . . . . . 229 19.6.10 Getting your SSCDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 19.6.11Frequently Asked Question . . . . . . . . . . . . . . . . . . . . . . . . . . 229 20 Advanced data calibration 231 20.1 Before reading this chapter... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 20.2 Core calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 20.2.1 Dark correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 20.2.2 Deglitching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 20.2.3 Stabilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 20.2.4 Reducing IMAGEs to EXPOSUREs . . . . . . . . . . . . . . . . . . . . . 237 20.2.5 Flat-fielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 20.2.6 Flat-fielding and wheel jitter . . . . . . . . . . . . . . . . . . . . . . . . . 239 20.2.7 Small mirror and unilluminated pixels . . . . . . . . . . . . . . . . . . . . 240 20.3 Calibrating an SSCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 20.4 Raster MOSAIC creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243 20.5 Creation of the beam-switch MOSAIC . . . . . . . . . . . . . . . . . . . . . . . . 244 20.6 CVF analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 20.6.1 Sensitivity and straylight correction . . . . . . . . . . . . . . . . . . . . . 245 20.6.2 Photometry on faint point sources . . . . . . . . . . . . . . . . . . . . . . 245 20.7 <strong>Analysis</strong> of solar-system-objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 246 20.8 Tips on CIA data calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249 20.8.1 PDS history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 20.9 Dealing with dead pixels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 20.10Making custom FLATs with flat builder . . . . . . . . . . . . . . . . . . . . . . 252 20.10.1Building a simple flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252 20.10.2Advanced features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 20.11Background subtraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 20.12Obtaining the best calibration record from a CDS . . . . . . . . . . . . . . . . . 254 20.12.1 find best . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256 20.12.2 find best psf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256 20.13Unit conversion and colour correction . . . . . . . . . . . . . . . . . . . . . . . . 256 20.13.1 Propagation of pixel units within a PDS . . . . . . . . . . . . . . . . . . . 256
CONTENTS xi 20.13.2 Conversion to milli-janskys . . . . . . . . . . . . . . . . . . . . . . . . . . 257 20.13.3 Color correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257 20.14A note on the infamous column 24 . . . . . . . . . . . . . . . . . . . . . . . . . . 258 20.15Advanced projection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 20.15.1 Distortion correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 20.15.2Weighted mean option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 20.15.3Coadding images of different astrometry . . . . . . . . . . . . . . . . . . . 260 20.15.4 Back projection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 20.15.5 Distortion correction for staring, beam-switch and CVF observations . . 265 20.16Faint source data reduction with PRETI . . . . . . . . . . . . . . . . . . . . . . 266 20.17Error handling in CIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266 20.18How to save spoiled observations . . . . . . . . . . . . . . . . . . . . . . . . . . . 269 21 Using SLICE within CIA 273 21.1 Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 21.2 A brief description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 21.3 Organization of data in SLICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274 21.4 Processing in SLICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276 21.4.1 The SLICE syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276 21.4.2 Error computations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 21.5 A worked example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 21.5.1 The data set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 21.5.2 Choice of flat-field methods/parameters . . . . . . . . . . . . . . . . . . . 279 21.5.3 Long-term transient determination . . . . . . . . . . . . . . . . . . . . . . 283 21.5.4 Second flat-field determination . . . . . . . . . . . . . . . . . . . . . . . . 285 21.6 Bad pixels, ghosts and sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286 21.6.1 Removing bad pixels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287 21.7 Frequently Asked Questions and Problems . . . . . . . . . . . . . . . . . . . . . . 288 22 Second order corrections 293 22.1 Jitter correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293 22.1.1 Computing the jitter offsets . . . . . . . . . . . . . . . . . . . . . . . . . . 293 22.1.2 Applying jitter offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 22.2 Field of view distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 23 x cia reference guide 297 23.1 Advanced use of x cia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 23.1.1 Executing IDL commands from within x cia . . . . . . . . . . . . . . . . 297 23.1.2 Buffer variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 23.2 Help on x cia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 23.2.1 List of commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 23.2.2 Short description of commands . . . . . . . . . . . . . . . . . . . . . . . . 300 A Glossary 305
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40 CHAPTER 5. SOLAR SYSTEM OBJECT O
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42 CHAPTER 6. BEAM-SWITCH OBSERVATI
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48 CHAPTER 7. CVF OBSERVATION (CAM0
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50 CHAPTER 7. CVF OBSERVATION (CAM0
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52 CHAPTER 8. POLARIZATION OBSERVAT
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Introduction The purpose of Part II
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62 CHAPTER 9. THE DATA PRODUCTS AND
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68 CHAPTER 10. FIRST LOOK AT THE DA
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74 CHAPTER 11. INTRODUCTION TO CIA
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76 CHAPTER 11. INTRODUCTION TO CIA
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78 CHAPTER 12. DATA SLICING 3. At t
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80 CHAPTER 12. DATA SLICING CIA> ns
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82 CHAPTER 12. DATA SLICING equal t
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84 CHAPTER 12. DATA SLICING OR CIA>
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86 CHAPTER 12. DATA SLICING 70 16.0
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88 CHAPTER 12. DATA SLICING • Sel
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90 CHAPTER 12. DATA SLICING We sugg
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92 CHAPTER 12. DATA SLICING title d
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94 CHAPTER 12. DATA SLICING • Sel
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96 CHAPTER 13. DATA CALIBRATION 13.
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98 CHAPTER 13. DATA CALIBRATION •
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100 CHAPTER 13. DATA CALIBRATION 13
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104 CHAPTER 13. DATA CALIBRATION Fi
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106 CHAPTER 13. DATA CALIBRATION au
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108 CHAPTER 13. DATA CALIBRATION 2.
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114 CHAPTER 14. IMAGE ANALYSIS AND
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Introduction The purpose of this pa
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Chapter 15 CIA data structure high-
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15.2. OBSERVATION DATA STRUCTURES 1
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15.3. CALIBRATION DATA STRUCTURE (C
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15.4. AUXILIARY CALIBRATION DATA 17
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15.4. AUXILIARY CALIBRATION DATA 17
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15.5. PREPARED DATA STRUCTURE (PDS)
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Chapter 16 Data structure manipulat
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16.1. CIA DATA STRUCTURE INTERFACE
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16.1. CIA DATA STRUCTURE INTERFACE
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16.2. AN EXAMPLE OF SAD MANIPULATIO
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16.4. MANIPULATING THE MASK 195 and
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16.5. CDS DATA EXTRACTION 197 16.5
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16.6. MANIPULATING CIA DATA STRUCTU
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Chapter 17 Importing ISO data produ
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17.2. IMPORTING FITS TO REGULAR IDL
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Chapter 18 Export of CIA data struc
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18.3. EXPORT FOR ARCHIVING 207 CIA>
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Part IV Advanced Use of CIA 209
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214 CHAPTER 19. ADVANCED SLICING 19
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216 CHAPTER 19. ADVANCED SLICING Fi
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230 CHAPTER 19. ADVANCED SLICING
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232 CHAPTER 20. ADVANCED DATA CALIB
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274 CHAPTER 21. USING SLICE WITHIN
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294 CHAPTER 22. SECOND ORDER CORREC
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296 CHAPTER 22. SECOND ORDER CORREC
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298 CHAPTER 23. X CIA REFERENCE GUI
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306 APPENDIX A. GLOSSARY beam-switc
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308 APPENDIX A. GLOSSARY FITS (data
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310 APPENDIX A. GLOSSARY raster dat
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312 APPENDIX A. GLOSSARY
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314 APPENDIX B. CIA COMMAND SHORT-L
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320 APPENDIX C. THE ISO CD-ROM C.2.
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322 APPENDIX C. THE ISO CD-ROM Vari
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324 APPENDIX D. GUIDELINES FOR WRIT
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326 APPENDIX D. GUIDELINES FOR WRIT
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328 APPENDIX E. ISOCAM ASTROMETRY:
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338 APPENDIX F. WHAT IS NEW IN CIA
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344 APPENDIX G. WARNING MESSAGES IN
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346 APPENDIX H. PATCHED ASTROLIB AN
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348 APPENDIX I. UPGRADING OLD CIA S
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350 APPENDIX I. UPGRADING OLD CIA S
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352 APPENDIX J. REPORTING PROBLEMS
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354 APPENDIX K. TECHNICAL REPORTS S
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356 BIBLIOGRAPHY Okumura K., 1998,
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