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Synphot User’S Guide December 1998 Synphot User’s Guide SPACE Science Software Group TELESCOPE Science Support Division SCIENCE 3700 San Martin Drive INSTITUTE Baltimore, Maryland 21218 Operated by the Association of Universities for Research in Astronomy,1 Inc., for the National Aeronautics and Space Administration STSDAS Group Rick White Lead, Science Software Group Perry Greenfield Programming Supervisor Ellyne Kinney System Administration and Distribution Howard Bushouse NICMOS Calibration and Pipeline, Synthetic Photometry Ivo Busko Isophote, Fitting, Graphics Michele de le Peña GHRS, FOS, CVOS, HSTIO Warren Hack ACS Calibration and Pipeline, FOC, igi, Graphics, Paper Products Phil Hodge Table System, FOC and STIS Calibration and Analysis, Fourier analysis J.C. Hsu HSP, FGS, WF/PC, WF/PC2 Calibration and Analysis, Paper products, Convfile, Ctools, Timeseries Dick Shaw Exposure Time Calculators, Nebular, Imgtools Bernie Simon Calibration Database, Synthetic Photometry, Table Editor, FITSIO, IRAF System Support Eric Wyckoff User Support, Regression Testing Revision History Cover Date Editor November 1990 David Bazell September 1993 Howard Bushouse March 1995 Howard Bushouse December 1998 Howard Bushouse, Bernie Simon Send comments or corrections to: Science Software Group, SSD Space Telescope Science Institute 3700 San Martin Drive Baltimore, Maryland 21218 E-mail: [email protected] Copyright © 1998 by the Association of Universities for Research in Astronomy, Inc., All rights reserved. Contents iii Table of Contents Preface .....................................................................................xi Chapter 1: About Synphot... ................................. 1 Background............................................................................. 2 How Synphot Works ............................................................. 3 The Synphot Data Base....................................................... 4 Can Synphot be Used for Other Telescopes? ............... 5 Chapter 2: Using Synphot ...................................... 7 Synphot Tasks ....................................................................... 7 Command and Argument Syntax ...................................... 9 Syntax Examples.................................................................. 9 Observation Mode .............................................................. 10 Spectrum ............................................................................ 13 Form ................................................................................... 15 Wavelength Table............................................................... 18 Reference Data................................................................... 20 Chapter 3: Cookbook ................................................ 21 Bandpasses .......................................................................... 21 Spectra................................................................................... 24 Photometry............................................................................ 27 Images ................................................................................... 31 Two-Dimensional Spectra ................................................. 38 Chapter 4: Task Descriptions............................ 43 Bandpar ................................................................................. 44 Examples............................................................................ 46 iv Contents Calcband ............................................................................... 46 Examples............................................................................ 48 Calcspec................................................................................ 48 Examples............................................................................ 50 Calcphot................................................................................. 52 Examples............................................................................ 55 Countrate............................................................................... 56 Examples............................................................................ 58 Fitband ................................................................................... 61 Example.............................................................................. 64 Fitspec.................................................................................... 65 Example.............................................................................. 68 Fitgrid ..................................................................................... 70 Examples............................................................................ 72 Genwave ............................................................................... 74 Examples............................................................................ 74 Grafcheck .............................................................................. 75 Example.............................................................................. 75 Graflist.................................................................................... 76 Examples............................................................................ 76 Grafplot .................................................................................. 76 Example.............................................................................. 78 Imspec.................................................................................... 79 Examples............................................................................ 80 Obsmode............................................................................... 81 Examples............................................................................ 82 Plband .................................................................................... 82 Examples............................................................................ 83 Plspec..................................................................................... 85 Examples............................................................................ 89 Plratio ..................................................................................... 94 Examples............................................................................ 96 Pltrans .................................................................................... 97 Examples............................................................................ 99 Contents v Refdata ................................................................................ 100 Showfiles ............................................................................. 101 Example............................................................................ 102 Simulators ........................................................................... 103 Shared Task Parameters.................................................. 103 Data File Formats ............................................................. 106 Simimg.............................................................................. 109 Simspec............................................................................ 109 Simnoise........................................................................... 110 Examples.......................................................................... 110 Chapter 5: Inner Workings ................................. 113 Syncalc ................................................................................ 113 Graph and Component Tables....................................... 115 Chapter 6: Calibration Using Synthetic Photometry............................................. 121 Appendix A: HST Instrument Keyword Lists................................................................ 125 FGS....................................................................................... 126 FOC ...................................................................................... 126 FOS....................................................................................... 128 HRS ...................................................................................... 129 HSP....................................................................................... 130 NICMOS .............................................................................. 130 STIS...................................................................................... 131 WF/PC-1.............................................................................. 132 WFPC2 ................................................................................ 134 Non-HST Filter Systems.................................................. 136 vi Contents Appendix B: On-Line Catalogs and Spectral Atlases ............................................... 139 HST Calibration Target Spectra..................................... 140 Kurucz Model Atmospheres............................................ 140 Bruzual Spectrum Synthesis Atlas................................ 143 Gunn-Stryker Spectrophotometry Atlas ....................... 143 Bruzual-Persson-Gunn-Stryker Spectrophotometry Atlas ................................................. 143 Jacoby-Hunter-Christian Spectophotometry Atlas................................................... 144 Bruzual-Charlot Atlas........................................................ 152 Kinney-Calzetti Atlas .......................................................
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