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 Visibility Period

Visibility Period for Pure Parallel Observations

6.4 Acquisition 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

Coordinated Parallel Observations