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

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230 CHAPTER 19. ADVANCED SLICING • slicer to cia doesn’t compile. . . That is because a COMMON block is not defined. You probably exited IDL after having sliced a big file, and you tried to read your .sli file. . . Reread carefully Section 19.6.8 or type the following commands: CIA> COMMON slicer_data, Oh_my_God_what_a_stupid_name_for_a_variable CIA> .run slicer_to_cia 19.6.11.3 x slicer did not do what I told it to do. . . • x slicer did not write the SCDs where it was told to. . . Are you sure that you hit the return key after entering the path in the directory field ? Remember that the default directory is the one from which you launched x slicer. • x slicer did not create all the SCDs I asked for. . . You probably asked for SCDs of 1 frame: as they do not exist, they were not created. 19.6.11.4 x slicer crashes. . . • x slicer crashes just in the beginning. . . You should probably reread the section about x slicer customization, because you probably made a mistake in entering your preferred directory. • x slicer crashes while creating SCDs. . . You probably asked it to build a SCD with no frames, or with a hole in it (by misusing the merge buttons). • x slicer crashes while saving SCDs. . . Are you sure you have enough place on your disk? Or even the right to write on it?
Chapter 20 Advanced data calibration In this chapter of the CIA User’s Manual different calibration methods and algorithms are briefly reviewed and their implementation in CIA is described. Detailed information on calibration algorithms can be found in the technical reports listed in Appendix K. Probably the most helpful report for a novice is the ISOCAM Handbook. This report contains a broad treatment of calibration algorithms – it, and the technical reports, will be referenced throughout the chapter where appropriate. Since more up-to-date algorithms and routines are continually being developed it is also a good idea to refer to the on-line help or cia help (see Section 2.3.2). 20.1 Before reading this chapter. . . Throughout this chapter references are made to the Prepared Data Structure (PDS) (Section 15.5) and the CIA calibration routines (Chapter 13). Familiarity with both topics is assumed. You will also frequently encounter references such as .IMAGE, .CUBE, .MASK, etc. . . . These are general references to fields and substructures in the PDS. 20.2 Core calibration You have already been introduced to the core calibration routines in Section 13.2.1. Here we will look a little deeper into the different correction methods that are available for each of the core calibration routines. The chosen correction method can be specified with the keyword method. Each method is implemented by a low-level routine which may accept keywords for tuning algorithm parameters. These keywords may be specified when calling the core calibration routine and IDL will pass the keywords to the low-level routine (i.e. using IDL’s keyword inheritance functionality). To find out what tuning can be done for a particular method, look for the relevant low-level routine in the online help (Section 2.3.2). 20.2.1 Dark correction In principle, dark correction is a simple procedure – a matter of subtracting the DARK image from the IMAGE. The hard part is choosing a good DARK. All dark correction methods are handled by corr dark. Technical details of some of these methods can be found in the references given below. In general, corr dark performs the dark correction in the following manner: 1. Obtains the DARK as instructed by the user setting of the keyword method or indark. 231
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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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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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94 CHAPTER 12. DATA SLICING • Sel
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96 CHAPTER 13. DATA CALIBRATION 13.
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100 CHAPTER 13. DATA CALIBRATION 13
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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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280 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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