STIS Instrument Handbook for Cycle 24

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Chapter 8:
Target Acquisition

8.1 Introduction

8.1.1 Initial Pointing

8.1.2 Acquisitions

8.1.3 Peakups

8.1.4 Drift Rates

8.2 STIS Onboard CCD Target Acquisitions (ACQ)

8.2.1 How it Works

8.2.2 Target Location Algorithms

8.2.3 Selecting Target Acquisition Parameters

8.2.4 Specifying Acquisitions in Phase II

8.2.5 Solar System Acquisitions

8.3 Onboard Target Acquisition Peakups (ACQ/PEAK)

8.3.1 Selecting Peakup Parameters

8.3.2 Specifying Acquisition Peakups in Phase II

8.4 Determining Coordinates in the Guide Star Selection System (GSSS) Reference Frame

8.5 Acquisition Examples

8.5.1 Point Source Acquisition of an Isolated Object

8.5.2 Point Source Acquisition of Bright, Isolated Object with CCD Dispersed Light Peakup

8.5.3 Diffuse Source Acquisition of a Spiral Galaxy

8.5.4 Point Source Acquisition in a Crowded Field

8.5.5 Point Source Acquisition of a QSO with Fuzz Behind the Fiducial Bar

8.5.6 Point Source Acquisition of a Bright, Isolated Star Into the Wedge

8.6 STIS Post-Observation Target Acquisition Analysis

8.6.1 Did the Acquisition Succeed?