HST Primer for Cycle 25
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Table of Contents

Hubble Space Telescope Primer for Cycle 25
Chapter 1: Introduction
1.1 About this Document
1.2 What’s New This Cycle
1.3 Resources, Documentation and Tools
1.3.1 Phase I “Roadmap”
1.3.2 Cycle 25 Announcement Webpage
1.3.3 Cycle 25 Call for Proposals
1.3.4 Instrument Handbooks
1.3.5 The Astronomer’s Proposal Tool (APT) and the Aladin Sky Atlas
1.3.6 Exposure Time Calculators (ETCs)
1.3.7 HST Data Archive
1.3.8 Duplication Checking
1.3.9 Data Reduction and Calibration
1.4 STScI Help Desk
Chapter 2: System Overview
2.1 Telescope Design and Field of View
2.2 Orbital Constraints
2.2.1 Continuous Viewing Zone (CVZ)
2.2.2 South Atlantic Anomaly (SAA)
2.2.3 Predicted HST Position
2.3 Pointing Constraints
2.4 Orientation and Roll Constraints
2.5 Data Storage and Transmission
2.5.1 Onboard Data Storage
Chapter 3: Telescope Performance
3.1 Optical Performance
3.2 HST Guiding Performance
3.3 HST Observing Efficiency
Chapter 4: Cycle 25 Scientific Instruments
4.1 Advanced Camera for Surveys (ACS)
4.2 Wide Field Camera 3 (WFC3)
4.3 Fine Guidance Sensor (FGS)
4.4 Cosmic Origins Spectrograph (COS)
4.4.1 Far-Ultraviolet Channel (COS/FUV)
4.4.2 Near-Ultraviolet Channel (NUV)
4.4.3 COS FUV XDL Gain Sag
4.4.4 Optimizing the Science Return of COS
4.5 Space Telescope Imaging Spectrograph (STIS)
4.6 Additional Observing Modes
4.6.1 Imaging Polarimetry
4.6.2 Slitless Imaging Spectroscopy
4.6.3 Ramp and Quad Filters
4.6.4 Coronagraphy
4.6.5 Observations with Two Instruments - Parallel Observing
4.7 Instrument Comparisons
4.7.1 HST Imaging
4.7.2 Spectrographs
Chapter 5: Observing Considerations
5.1 Bright-Object Constraints
5.1.1 ACS, COS & STIS
5.1.2 FGS
5.1.3 WFC3
5.2 Target Acquisitions
5.2.1 Target Acquisition without the Ground System
5.2.2 Target Acquisition with Ground System Support
5.3 Solar System Targets
5.4 Offsets, Patterns, and Dithering
5.5 Spatial Scans
Chapter 6: Orbit Calculation for a Phase I Proposal
6.1 Overview of an Observing Program
6.1.1 General Observer (GO) Programs
6.1.2 Snapshot Programs
6.2 HST Visits
6.2.1 Defining New Visits and Optimizing Scheduling Efficiency and Flexibility
6.2.2 Instrument Specific Limitations on Visits
6.3 The Orbital Visibility Period
6.4 Acquisitions Times and Instrument Overheads
6.4.1 Guide Star Acquisition Times
6.4.2 Target Acquisition Times
6.4.3 Instrument Overhead Times
6.4.4 Telescope Repositioning Overhead Times
6.5 Constructing the Program
Chapter 7: Data Processing and the HST Data Archive
7.1 Routine Science Data Processing
7.1.1 Space Telescope Science Data Analysis System (STSDAS)
7.2 The HST Data Archive
7.2.1 Web Access to the HST Data Archive
7.3 Hubble Legacy Archive (HLA)
7.4 Hubble Source Catalogs (HSC)
Appendix A: Orbit Calculation Examples
A.1 ACS Example
A.2 COS Examples
A.3 FGS Example
A.4 STIS Example
A.5 WFC3 Examples
Appendix B: HST Mission
B.1 Servicing Missions and Instrument Complements
Appendix C: Legacy Instruments
C.1 Faint Object Camera (FOC)
C.2 Faint Object Spectrograph (FOS)
C.3 Goddard High Resolution Spectrograph (GHRS)
C.4 High Speed Photometer (HSP)
C.5 Wide Field and Planetary Camera 1 (WF/PC)
C.6 Wide Field and Planetary Camera 2 (WFPC2)
C.7 The Advanced Camera for Surveys High Resolution Channel (ACS/HRC)
C.8 Near Infrared Camera and Multi-Object Spectrometer (NICMOS)
Appendix D: Internet Links
Instrument Science Reports
Appendix E: Glossary of Acronymsand Abbreviations

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