HST Data Handbook for FGS

Table of Contents

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Preface

Introduction to Reducing HST Data

Part I: 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

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

Part II: FGS Data Handbook

FGS Introduction

How to Use this Handbook

Chapter 1: Instrument Overview

1.1 Instrument Capabilities

1.1.1 The FGS as a Science Instrument

1.2 Technical Overview

1.2.1 The Instrument

1.2.2 Modes of Operation

1.2.3 FGS Capabilities

1.2.4 FGS Control

1.3 Target Acquisition and Tracking

1.3.1 Search

1.3.2 CoarseTrack

1.3.3 FineLock

1.3.4 Transfer Scans

1.4 FGS Guiding

Chapter 2: FGS Data Products

2.1 Engineering Telemetry Data

2.1.1 File Description

2.1.2 Group Structure and Group Contents

2.1.3 FITS Header Keywords

2.2 Relationship to Phase II Proposal

2.3 Jitter Files

2.4 SMS Support Data

Chapter 3: Calibration

3.1 Preparing FGS Data for Processing

3.2 Initial Data Processing - calfgsa

3.2.1 calfgsa and Transfer Mode Data

3.2.2 calfgsa and Position Mode

3.3 calfgsa Processing Overview

3.4 calfgsb and Position Mode

3.4.1 preparing to use calfgsb

3.4.2 executing calfgsb

3.5 Position Mode Processing Overview

3.5.1 Processing Individual Observations

3.5.2 Visit level processing

3.6 calfgsa Output: The *.tab File

Chapter 4: Data Analysis

4.1 Analysis Tools

4.2 Analyzing Individual Observations

4.2.1 FGSPLOT

4.2.2 Read-FGS

4.2.3 Export-FGS

4.3 Analyzing Multi-Epoch Astrometry Data: gaussfit

4.3.1 4 and 6 Parameter Plate Solutions

4.3.2 Preparing Files for input by Gaussfit

4.4 Transfer Mode Data Analysis

4.4.1 Transfer Mode Data Reduction

4.4.2 Analyzing Observations of Binary Stars

4.5 Uncertainties in Transfer Mode Data

Chapter 5: Astrometric Error Sources

5.1 Levels of Position Mode Errors

5.2 Observation-Level Position Mode Errors

5.2.1 Rotation Angle Errors

5.2.2 Centroiding Errors

5.2.3 Locating Interferometric Null

5.2.4 Optical Field Angle Distortion

5.2.5 Lateral Color Error

5.2.6 Cross Filter Effect

5.2.7 Differential Velocity Aberration

5.2.8 Lever Arm Length and Offset Angle

5.3 Visit-Level Position Mode Errors

5.3.1 Position Mode De-jittering Errors

5.3.2 Drift Correction Errors

5.4 Field-Level Position Mode Errors

5.5 Transfer Mode Errors

Part III: Appendixes

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