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HST Data Handbook

Volume 2: Heritage Instruments



Table of Contents

Preface: How to Use this Handbook ix

Handbook Structure x
Handbook Updates xii
Typographic Conventions xii

Part VII: FOS

Chapter 29 FOS Instrument
Overview
29-1

FOS Documentation 29-2
General Outline for Handling FOS Data 29-3
FOS Instrument Basics 29-4
Science Observing Modes 29-20
Target Acquisition 29-22


Chapter 30 FOS Data Structures and
Data Assessment
30-1

Contents of Delivered Data 30-1
Headers, Keywords, and Group Parameters 30-9
FOS Paper Products 30-15
Evaluating Planned Observations 30-24
Assessing FOS Acquisitions 30-26
Assessing FOS Science Observations 30-37


Chapter 31 Calibrating and
Recalibrating FOS Data
31-1

Pipeline Calibration Overview 31-1
Input Files 31-5
CDBS Reference Relations 31-7
Details of the FOS Pipeline Process 31-13
Paired Aperture Calibration Anomaly 31-25
Recalibrating FOS Data: A Checklist 31-26
Post-Calibration Output Files 31-27
User Calibrations 31-29


Chapter 32 FOS Error Sources
32-1

Target Location in Aperture 32-2
Mechanism Stability 32-6
Location of Image on Diode Array 32-7
OTA Effects 32-15
Calibration Accuracies 32-16
Photometric Accuracies 32-17
Flatfield Calibration 32-38
Wavelength Calibration 32-49
Other Data Problems 32-52
PSF/LSF 32-60
Astrometry and Aperture Location 32-62
Timing Accuracies 32-62
Polarimetry 32-64


Chapter 33 FOS Data Analysis
33-1

Calculating Exposure Times 33-1
RAPID Mode Observation Timing Uncertainties 33-5
Heliocentric Radial Velocity Calculation 33-6

FOS/BL G160L Zero-Order Photometric
Calibration
33-7
Converting FOS X,Y to Spacecraft V2,V3 33-8
Other Useful FOS Tasks in STSDAS 33-9

Part VIII: GHRS

Chapter 34 GHRS Instrument
Overview
34-1

GHRS History 34-2
Instrument Description 34-3
Operating Modes and Data Types 34-11
Documentation and References 34-12


Chapter 35 GHRS Data Structures
and Data Assessment
35-1

Contents of Delivered Data 35-1
Header Keywords 35-8
Paper Products 35-9
Assessing GHRS Data 35-13
Assessing GHRS Acquisitions 35-19
Assessing GHRS Science Data 35-29
RAPID Mode (and a Little About Spatial Scans) 35-34


Chapter 36 Calibrating and
Recalibrating GHRS Data
36-1

Pipeline Calibration Process 36-2
Calibration Steps Explained 36-2
Recalibrating GHRS Data 36-13


Chapter 37 GHRS Error Sources
37-1

About Flux Calibrations 37-2
Spectrum Level and the Sensitivity -Function 37-2
Spectrum Shape 37-16
Spectrum Noise and Structure 37-18
Calibration Quality Files 37-22
About Wavelength Calibrations 37-23
Spatial Uncertainty: Target Acquisition
Problems
37-28
Observation Timing 37-29
Instrument and Spacecraft Errors 37-31


Chapter 38 GHRS Data Analysis
38-1

The Post-COSTAR Point Spread Function 38-1
The GHRS Line Spread Function 38-3

Part IX: HSP

Chapter 39 HSP Instrument
Overview
39-1

HSP Documentation 39-1
Instrument Capabilities and Design 39-2

Chapter 40 HSP Data Structures 40-1

Data Products and File Structures 40-1
HSP Reference Tables 40-5
Displaying HSP Data 40-5


Chapter 41 Calibrating HSP Data
41-1

Pipeline Calibration 41-1
Calibration Switches 41-2
Calibration Algorithms 41-4
HSP Calibration Parameter Tables 41-6


Chapter 42 HSP Error Sources and
Data Analysis
42-1

Uncertainty in EXPSTART and EXPEND 42-1
Disagreement Between PTSRCFLG and SHP 42-2
Correcting Times in PRISM and STAR-SKY
Modes
42-2
Prism Aperture Calibration 42-2
VIS Degradation 42-3
Orbital Period and Ramp 42-4
SDF Clock Errors 42-6
Bogus Data Packets 42-7
Data Echo Problem 42-7
Expected Accuracies of HSP Data 42-8
Further Analysis 42-9
References 42-9

Part X: WF/PC-1

Chapter 43 WF/PC-1 Instrument
Overview
43-1

Historical Overview 43-1
WF/PC-1 Documentation 43-2
WF/PC-1 Instrument Basics 43-3
WF/PC-1 Bibliography 43-7


Chapter 44 WF/PC-1 Data Structures
44-1

Science Data Files 44-1
Reference Files 44-3
Header Keywords 44-3


Chapter 45 Calibrating
WF/PC-1 Data
45-1

Overview of Pipeline Processing 45-1
Calibration of WF/PC-1 Data 45-3
Calibration Details 45-7
Should You Recalibrate? 45-12
Improvements to Calibration Reference Files 45-13
Determining the "Best" Reference Files 45-14
Recalibrating WF/PC-1 Data 45-20


Chapter 46 WF/PC-1 Error Sources
and Data Analysis
46-1

Effect of Decontaminations 46-2
Scattered Light 46-2
Persistent Measles 46-2
Hot Pixels 46-5
Cosmic Rays 46-6
Flatfield Anomalies 46-7
Photometry 46-9
PSFs 46-11
Plate Distortion 46-13
Data Accuracies and Problem Solving 46-13

Appendixes

Appendix E: Internet Resources E-1

Appendix F: Task Example Index F-1

Index IX-1



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Copyright © 1997, Association of Universities for Research in Astronomy. All rights reserved. Last updated: 01/14/98 14:25:30