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STScI Webcast

2017 JWST Proposal Planning Workshop

JWST Overheads

Presented by: Jeff Valenti (STScI)
Category: Science Workshops   Duration: 30 minutes   Broadcast date: May 16, 2017
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JWST Overheads Jeff Valenti (STScI) JWST observers will receive a time allocation that includes science photon collection, direct overheads associated with a visit, and indirect overheads that apportion generic observatory activities to all visits. APT can export a times report, which tabulates overheads for each visit, including initial slew, guide star acquisition, target acquisition, exposure overheads, dithers, mechanism moves, script compilation, direct scheduling overheads, and observatory overheads. I will describe the overhead categories reported by APT and give specific examples of each. Observing templates generally constrain how visits execute, but in some cases observers can trade robustness or science data quality for efficiency. I will give examples. Finally, I will describe ongoing work to reduce overheads.

Related Documents

Jeff Valenti's slides PowerPoint (.ppt)