STScI Logo

Hubble Space Telescope
GHRS Instrument Handbook v5.0

Entire handbook [PostScript 1040 Kb]:
Version 5.0 has been prepared for Cycle 5 of the HST science mission. The file "", [PostScript 1040 Kb], contains the entire handbook, but we recommend treating it chapter by chapter instead. If you have questions please contact the Help Desk at:

Directory of individual PostScript sections:
The GHRS Handbook v.5.0 is in PostScript form. If you are using Ghostview as a viewer and the output looks garbled, try using a higher magnification.

Title Page [PostScript 60 Kb]
Part I: Introduction to the GHRS and this Handbook
Chapter 1 [PostScript 74 Kb] Preliminaries and Essential Reading, p.5
1.1 This Handbook
1.2 Changes since the previous version
1.3 Where to find additional information, changes, errata, etc.
Chapter 2 [PostScript 95 Kb] Instrument Summary - Why Use the GHRS?, p.11
2.1 Fundamental properties of the instrument
2.2 A Brief Description of the Instrument and Its Operation
2.3 A Little About How HST and GHRS Work
2.4 GHRS Modes of Operation
Part II: Writing GHRS Proposals
Chapter 3 [PostScript 111 Kb] Phase I: What the TAC Sees, p.21
3.1 Essential questions
3.2 Creating an Observation Scenario
3.3 Specifying Target Acquisition
3.4 Calculating the Exposure Time
Chapter 4 [PostScript 142 Kb] Your Phase II Proposal, p.33
4.1 Acquisitions
4.2 Image Mode
4.3 Accumulation Mode
4.4 Rapid Readout Mode
4.5 The Precision and Accuracy of Standard Calibrations
4.6 Other Considerations
Chapter 5 [PostScript 65 Kb] Phase II Proposal Examples, p.49
Part III: GHRS Reference Information
Chapter 6 [PostScript 64 Kb] Design and Construction of the GHRS, p.55
6.1 The HST Focal Plane and the GHRS Apertures
6.2 Gratings and Optical Elements
6.3 The Digicon Detectors
Chapter 7 [PostScript 353 Kb] Target Acquisition Reference Information, p.67
7.1 Predicting Target Acquisition Count Rates for Stars
7.2 Constraints on the Value of the STEP-TIME Parameter
7.3 Acquisition Count Rates for Extended Objects
7.4 Other Acquisition Information
Chapter 8 [PostScript 352 Kb] Reference Tables for Instrument Performance, p.81
8.1 The Effect of COSTAR on the GHRS
8.2 Properties of the First-Order Gratings
8.3 Properties of the Echelle Gratings
8.4 Standard Patterns for Substepping and Background Measurement
8.5 The Effects of Reddening in the Ultraviolet
8.6 Instrumental Properties
Chapter 9 [PostScript 75 Kb] GHRS Bibliography, p.101
9.1 Ultraviolet Extinction
9.2 GHRS-Related Technical Papers
9.3 GHRS Scientific Papers
9.4 Acknowledgments
Part IV:
Glossary [PostScript 58 Kb] of Terms and Abbreviations, p.111
Index [PostScript 68 Kb], p.115