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GHRS Instrument Handbook v6.0


D.R. Soderblom, A. Gonnella, S.J. Hulbert,
C. Leitherer, A. Schultz, and L.E. Sherbert

GHRS Group
Science Support Division
3700 San Martin Drive
Baltimore, Maryland 21218

About This Document...

Welcome to the web version of the GHRS Instrument Handbook. Although this version retains as much of the formatting and content of the original paper copy as is possible, inevitably some loss occurs during the translation. The printed version will, therefore, usually be of better quality and utility for most users.


Table of Contents

CHAPTER 1: - Introduction

This Handbook
Changes Since the Previous Version
Where to Find Information, Changes, Errata, etc.

CHAPTER 2: - Instrument Summary -- Why Use the GHRS?

Fundamental Properties of the Instrument
A Brief Description of the Instrument and Its Operation
A Little About How HST and GHRS Work
GHRS Modes of Operation
Special Considerations for Cycle 6

CHAPTER 3: - Writing a Phase I Proposal

Planning Your Proposal: Feasibility and Strategy
Acquisitions
Calibrations
Exposure Estimation
Constructing Visits

CHAPTER 4: - Your Phase II Proposal and Using RPS2

Acquisitions
Image Mode
Accumulation Mode
Rapid Readout Mode
The Structure of Exposures within Orbits with RPS2
Examples of GHRS Phase II Proposals

CHAPTER 5: - Calibration of the GHRS

Sensitivity
Wavelengths
Detector Properties
Other Properties
Cycle 5 Calibration Summary and Description
Calibration Status

CHAPTER 6: - Design and Construction of the GHRS

The HST Focal Plane and the GHRS Apertures
Gratings and Optical Elements
The Digicon Detectors

CHAPTER 7: - Target Acquisition Reference Information

Predicting Target Acquisition Count Rates for Stars
Alternate Method for Predicting Target Acquisition Count Rates
Constraints on Acquisitions and the STEP-TIME Parameter
Acquisition Count Rates for Extended Objects
Other Acquisition Information
Obsolescent Acquisition Parameters

CHAPTER 8: - Reference Information on Instrument Performance

Properties of the First-Order Gratings
Properties of the Echelle Gratings
Standard Patterns for Substepping and Background Measurement
The Effects of Reddening in the Ultraviolet
Instrumental Properties

CHAPTER 9: - GHRS Bibliography

Ultraviolet Reddening and Extinction
GHRS-Related Technical Papers
GHRS Scientific Papers
Acknowledgments

APPENDIX A: - Glossary of Terms and Abbreviations

Blaze Function
Corner diodes
Cycles
CVZ
DEFCAL
Focus diodes
GIMP
GSC
LSA
OPUS
Phase I
Phase II
Ripple Function
RPS2
SAA
Science diodes
Side 1, Side 2
SPYBAL
SSA
STEIS
STEP-PATT
STEP-TIME
Index