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

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336 APPENDIX E. ISOCAM ASTROMETRY: ANGLES AND COORDINATES E.3.2 From CIA structures to FITS images The main problem is to know which angle to supply to the fits header routine. It obviously depends on the type of data. E.3.2.1 Individual SCDs and the like This works also for an SAD that would be the average of an SCD, for a reduced beam-switch or CVF. The only angle that is valid in that case is the ROLL, or α. The obvious way to transfer the data is to avoid unnecessary rotations during the transfer, thus the Y+ axis will be Axis1 and the Z- axis will be Axis2 (see Figures E.1 and E.5). The angle that needs to be given to fits header, CROTA2, is then the position angle of the North axis with respect to the Z- axis. Thus: θ = 360 ◦ − α or CROTA2 = 360 ◦ - ROLL E.3.2.2 Reconstructed raster images In that case, the meaningful angle is .RASTER ROTATION, β. The individual images can no longer be distinguished therefore their ROLL is irrelevant to the raster (it is only coincidentally meaningful for Y-axis rasters). Here also the simplest way to store the image is to have the M+ axis be Axis1 and the N+ axis be Axis2. Thus, from Figures E.3 and E.5 one has: θ =90 ◦ − β or CROTA2 = 90 ◦ -RASTERROTATION
Appendix F What is new in CIA 5.0 F.1 New and improved algorithms • New distortion correction: We have now significantly improved distortion corrections. You can apply them not only for rasters as before, but also for CVFs and staring observations: – Distortion coefficients exist now for all 6 ′′ PFOV, LW configurations and for some 3 ′′ PFOV, LW fixed filters – With the routines ∗ project bs ∗ project cvf ∗ project struct You can now correct your beam-switch, cvf or staring observations for distortion effects, magnify them or, if you corrected the astrometry with xcorr astro for shifts induced by the CVF, get even a properly aligned image-stack where you can derive easily a spectrum • Improved projection via the routine raster scan featuring: – Reduced flux loss – More projection methods – New WCS library – Improved astrometric accuracy – Creation of the raster via weighted mean (options wcalg, wauto and wmap) – Easier access for drizzling via the keyword /shrink • Improved treatment of solar system objects by the new routine project sso CIA> project_sso, struct, eph=eph • Upgrade of flux conversion calibration. conv flux uses improved flux conversion (sensitivity) factors) and is now time-dependent. Additionally the calibration file ccglwsens contains now the column senserr to hold the uncertainty on the conversion factors 337
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ISOCAM Interactive Analysis User’
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Michael Rupen (NRAO) Jaqui Sam Lone
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vi CONTENTS 8 Polarization observat
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viii CONTENTS 14.4.6 x3d as a calib
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x CONTENTS 19.3 A beam-switch obser
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xii CONTENTS B CIA command short-li
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xiv CONTENTS
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xvi LIST OF FIGURES 14.13The raster
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xviii LIST OF FIGURES
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xx LIST OF TABLES
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2 CHAPTER 1. ABOUT THE CIA USER’S
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4 CHAPTER 2. ABOUT CIA 2.2 System r
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6 CHAPTER 2. ABOUT CIA Figure 2.2:
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8 CHAPTER 2. ABOUT CIA In addition,
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10 CHAPTER 2. ABOUT CIA 2.3.4 Custo
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12 CHAPTER 2. ABOUT CIA LOG Log fil
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14 CHAPTER 2. ABOUT CIA This will p
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16 CHAPTER 2. ABOUT CIA % device, p
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18 CHAPTER 2. ABOUT CIA
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Introduction The Quick Start Guide
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24 CHAPTER 3. RASTER OBSERVATION (C
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32 CHAPTER 4. STARING OBSERVATION (
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34 CHAPTER 4. STARING OBSERVATION (
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36 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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212
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214 CHAPTER 19. ADVANCED SLICING 19
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216 CHAPTER 19. ADVANCED SLICING Fi
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226 CHAPTER 19. ADVANCED SLICING va
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228 CHAPTER 19. ADVANCED SLICING Fo
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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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Page 306 and 307: 286 CHAPTER 21. USING SLICE WITHIN
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Page 318 and 319: 298 CHAPTER 23. X CIA REFERENCE GUI
Page 326 and 327: 306 APPENDIX A. GLOSSARY beam-switc
Page 328 and 329: 308 APPENDIX A. GLOSSARY FITS (data
Page 330 and 331: 310 APPENDIX A. GLOSSARY raster dat
Page 332 and 333: 312 APPENDIX A. GLOSSARY
Page 334 and 335: 314 APPENDIX B. CIA COMMAND SHORT-L
Page 340 and 341: 320 APPENDIX C. THE ISO CD-ROM C.2.
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Page 344 and 345: 324 APPENDIX D. GUIDELINES FOR WRIT
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Page 348 and 349: 328 APPENDIX E. ISOCAM ASTROMETRY:
Page 358 and 359: 338 APPENDIX F. WHAT IS NEW IN CIA
Page 364 and 365: 344 APPENDIX G. WARNING MESSAGES IN
Page 366 and 367: 346 APPENDIX H. PATCHED ASTROLIB AN
Page 368 and 369: 348 APPENDIX I. UPGRADING OLD CIA S
Page 370 and 371: 350 APPENDIX I. UPGRADING OLD CIA S
Page 372 and 373: 352 APPENDIX J. REPORTING PROBLEMS
Page 374 and 375: 354 APPENDIX K. TECHNICAL REPORTS S
Page 376 and 377: 356 BIBLIOGRAPHY Okumura K., 1998,
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