Space Telescope Science Institute  Part III:  How to Plan an Observation  9.1 Overview

Chapter 9:
Exposure Time
Calculations


In this chapter . . .
Overview
Calculating NICMOS Imaging Sensitivities
WWW Access to the Exposure Time Calculator

In this chapter we provide information needed to estimate exposure times for NICMOS Phase I proposals. We provide some general comments about NICMOS imaging exposure time issues. We then describe how to use the Web-based NICMOS Exposure Time Calculator (ETC). Imaging is the only capability currently implemented in the ETC. The instrument performance under the NCS (i.e. Cycles 11 and higher), can be reproduced in the ETC.


Part III:  How to Plan an Observation  9.1 Overview
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