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The Zwicky Transient Facility: Surveys and Scheduler

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arxiv 1905.02209 v1 pith:5O76FKQW submitted 2019-05-06 astro-ph.IM

The Zwicky Transient Facility: Surveys and Scheduler

Eric C. Bellm , Shrinivas R. Kulkarni , Tom Barlow , Ulrich Feindt , Matthew J. Graham , Ariel Goobar , Thomas Kupfer , Chow-Choong Ngeow
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Peter Nugent Eran Ofek Thomas A. Prince Reed Riddle Richard Walters Quan-Zhi Ye
This is my paper
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keywords surveystransientalgorithmfacilityoptimizationzwickyairmassapproach
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We present a novel algorithm for scheduling the observations of time-domain imaging surveys. Our Integer Linear Programming approach optimizes an observing plan for an entire night by assigning targets to temporal blocks, enabling strict control of the number of exposures obtained per field and minimizing filter changes. A subsequent optimization step minimizes slew times between each observation. Our optimization metric self-consistently weights contributions from time-varying airmass, seeing, and sky brightness to maximize the transient discovery rate. We describe the implementation of this algorithm on the surveys of the Zwicky Transient Facility and present its on-sky performance.

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