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STScI Webcast

JWST Community Lectures

APT and Target Visibility Tools

Presented by: Bill Blair  (STScI)
Category: JWST Meetings   Duration: 1 hour   Broadcast date: January 31, 2017
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Proposers with HST experience are no doubt familiar with the Astronomers Proposal Tool (APT), which is really a GUI-interface into a suite of tools used to propose for and ultimately schedule observations on the telescope. Despite the numerous differences between the HST and JWST missions, it has been possible to adapt and/or re-purpose many aspects of APT to handle both HST and JWST proposals. I will outline some of the main differences that drive APT development for JWST and describe both the state of the development and plans going forward prior to the Cycle 1 Call for Proposals. (Yes, APT is still being developed and improved even though the latest version just released, APT 25.0, has the vast majority of the expected functionality!) APT and its associated s/w systems will be able to assess all relevant schedulability aspects of specified observations, but it is not particularly well-suited for providing overview information on target visibilities versus time and/or availability or limitations in allowed position angles of instrument fields of view on the sky. Hence, to assist users with this complementary view into potential observations, two visibility calculators have been developed, a general tool that provides information for all JWST instruments and a detailed tool for supporting coronagraphy proposals with MIRI and/or NIRCam. These tools can effectively be used as time-saving "pre-planning tools" prior to doing detailed work in APT, by identifying potential observability issues up front in the proposal planning process.

Related Documents

Bill's slides PDF document (.pdf)