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![]() | HST Data Handbook for WFPC2 | ||||
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Table of Contents
Preface
Part I: Introduction to Reducing HST Data
- Introduction to Reducing HST Data
Chapter 1: Getting HST Data
- 1.1 Archive Overview
- 1.1.1 Archive Registration
- 1.1.2 Archive Documentation and Help
- 1.2 Getting Data with StarView
- 1.2.1 Downloading and Setting Up StarView
- 1.2.2 Simple Use of StarView
- 1.2.3 Marking and Retrieving Data with StarView
- 1.2.4 Using StarView to Retrieve Calibration Files and Proposal Information
- 1.2.5 Advanced Features of StarView
- 1.2.6 StarView and the Visual Target Tuner
- 1.2.7 Quick Data Retrieval with StarView
- 1.3 Getting Data With the World Wide Web
- 1.4 Reading HST Data Tapes and Disks
Chapter 2: HST File Formats
- 2.1 Historical Perspective
- 2.2 FITS File Format
- 2.2.1 Working with FITS Image Extensions
- 2.2.2 Working with FITS Table Extensions
- 2.3 GEIS File Format
- 2.3.1 Converting FITS to GEIS
- 2.3.2 GEIS Data Groups
- 2.3.3 Working with GEIS Files
- 2.3.4 The "waiver" FITS format
Chapter 3: STSDAS Basics
Part II: WFPC2 Data Handbook
- 3.1 Navigating STSDAS
- 3.1.1 STSDAS Structure
- 3.1.2 Packages of General Interest
- 3.2 Displaying HST Images
- 3.2.1 The display Task
- 3.2.2 Working with Image Sections
- 3.3 Analyzing HST Images
- 3.3.1 Basic Astrometry
- 3.3.2 Examining and Manipulating Image Data
- 3.3.3 Working with STIS, ACS, and NICMOS Imsets
- 3.3.4 Photometry
- 3.4 Displaying HST Spectra
- 3.4.1 FOS and GHRS Spectra
- 3.4.2 STIS Spectra
- 3.4.3 Producing Hardcopy
- 3.5 Analyzing HST Spectra
- 3.5.1 Preparing FOS and GHRS Data
- 3.5.2 Preparing STIS Spectra for Analysis
- 3.5.3 General Tasks for Spectra
- 3.5.4 STSDAS fitting Package
- 3.5.5 specfit
- 3.6 References
- 3.6.1 Available from STScI
- 3.6.2 Available from NOAO
- 3.6.3 Other References Cited in This Chapter
WFPC2 Introduction
- How to Use this Handbook
Chapter 1: WFPC2 Instrument Overview
Chapter 2: WFPC2 Data Structures
- 2.1 Data Files and Suffixes
- 2.2 Header Keywords
- 2.3 Correlating Phase II Exposures with Data Files
- 2.4 WFPC2 Paper Products
- 2.4.1 Visit-level Output
- 2.4.2 Exposure-level Output
- 2.4.3 A note about grayscales
- 2.4.4 Obtaining paper products
Chapter 3: WFPC2 Calibration
- 3.1 Data Processing Pipelines
- 3.2 Data Processing Steps
- 3.2.1 Calibration of WFPC2 Images
- 3.3 Standard Pipeline Calibration
- 3.3.1 Calibration Files
- 3.3.2 Calibration Steps
- 3.4 Recalibration
- 3.4.1 Why and When to Re-retrieve data through OTFR
- 3.4.2 Running calwp2 manually
- 3.5 Improving the Pipeline Calibration
- 3.5.1 Warm Pixels
- 3.5.2 Alternate Flatfields
- 3.5.3 Removing Cosmic Rays from Co-aligned Images
- 3.5.4 Charge Traps
Chapter 4: WFPC2 Error Sources
- 4.1 Bias Subtraction Errors
- 4.2 Flatfield Correction Errors
- 4.3 Dark Current Subtraction Errors
- 4.3.1 Electronic Dark Current
- 4.3.2 Dark Glow
- 4.3.3 Pointing Information in the Image Headers
- 4.4 Image Anomalies
- 4.4.1 Bias Jumps
- 4.4.2 Residual Images
- 4.4.3 PC1 Stray Light
- 4.4.4 Other Anomalies
Chapter 5: WFPC2 Data Analysis
- 5.1 Photometric zeropoint
- 5.1.1 Photometric Systems Used for WFPC2 Data
- 5.1.2 Determining the Zeropoint
- 5.2 Photometric Corrections
- 5.2.1 Time-Dependent Corrections
- 5.2.2 Position-Dependent Corrections
- 5.2.3 Other Photometric Corrections
- 5.2.4 An Example of Photometry with WFPC2
- 5.3 Polarimetry
- 5.4 Astrometry
- 5.5 Dithering
- 5.6 Accuracy of WFPC2 Results
References
Part III: Appendixes
- WWW References
Appendix A: IRAF Primer
- A.1 Initiating IRAF
- A.2 IRAF Basics
- A.3 Getting IRAF and STSDAS
Appendix B: HST File Names
- B.1 Rootnames
- B.2 Suffixes of Files Common to all Instruments
- B.3 Associations
Appendix C: Observation Logs
- C.1 Observation Log Files
- C.2 Retrieving Observation Logs
- C.3 Using Observation Logs
Index
Space Telescope Science Institute http://www.stsci.edu Voice: (410) 338-1082 help@stsci.edu |
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