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Title: The Zwicky Transient Facility: Surveys and Scheduler

Abstract

Presented here is 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.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6];  [7];  [8];  [8];  [8]; ORCiD logo [9]
  1. Univ. of Washington, Seattle, WA (United States). DIRAC Institute, Dept. of Astronomy
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States). Div. of Physics, Mathematics, and Astronomy
  3. Stockholm Univ. (Sweden). The Oskar Klein Center, Dept. of Physics
  4. Univ. of California, Santa Barbara, CA (United States). Kavli Inst. for Theoretical Physics; Univ. of California, Santa Barbara, CA (United States). Dept. of Physics; California Inst. of Technology (CalTech), Pasadena, CA (United States). Div. of Physics, Mathematics, and Astronomy;
  5. National Central Univ. (Taiwan). Institute of Astronomy
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Computational Science Dept.; Univ. of California, Berkeley, CA (United States). Dept. of Astronomy
  7. Weizmann Inst. of Science, Rehovot (Israel). Benoziyo Center for Astrophysics and the Helen Kimmel Center for Planetary Science
  8. California Inst. of Technology (CalTech), Pasadena, CA (United States). Caltech Optical Observatories
  9. California Inst. of Technology (CalTech), Pasadena, CA (United States). IPAC; California Inst. of Technology (CalTech), Pasadena, CA (United States). Div. of Physics, Mathematics, and Astronomy
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1567162
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Publications of the Astronomical Society of the Pacific
Additional Journal Information:
Journal Volume: 131; Journal Issue: 1000; Journal ID: ISSN 0004-6280
Publisher:
Astronomical Society of the Pacific (ASP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 97 MATHEMATICS AND COMPUTING

Citation Formats

Bellm, Eric C., Kulkarni, Shrinivas R., Barlow, Tom, Feindt, Ulrich, Graham, Matthew J., Goobar, Ariel, Kupfer, Thomas, Ngeow, Chow-Choong, Nugent, Peter, Ofek, Eran, Prince, Thomas A., Riddle, Reed, Walters, Richard, and Ye, Quan-Zhi. The Zwicky Transient Facility: Surveys and Scheduler. United States: N. p., 2019. Web. doi:10.1088/1538-3873/ab0c2a.
Bellm, Eric C., Kulkarni, Shrinivas R., Barlow, Tom, Feindt, Ulrich, Graham, Matthew J., Goobar, Ariel, Kupfer, Thomas, Ngeow, Chow-Choong, Nugent, Peter, Ofek, Eran, Prince, Thomas A., Riddle, Reed, Walters, Richard, & Ye, Quan-Zhi. The Zwicky Transient Facility: Surveys and Scheduler. United States. doi:10.1088/1538-3873/ab0c2a.
Bellm, Eric C., Kulkarni, Shrinivas R., Barlow, Tom, Feindt, Ulrich, Graham, Matthew J., Goobar, Ariel, Kupfer, Thomas, Ngeow, Chow-Choong, Nugent, Peter, Ofek, Eran, Prince, Thomas A., Riddle, Reed, Walters, Richard, and Ye, Quan-Zhi. Tue . "The Zwicky Transient Facility: Surveys and Scheduler". United States. doi:10.1088/1538-3873/ab0c2a.
@article{osti_1567162,
title = {The Zwicky Transient Facility: Surveys and Scheduler},
author = {Bellm, Eric C. and Kulkarni, Shrinivas R. and Barlow, Tom and Feindt, Ulrich and Graham, Matthew J. and Goobar, Ariel and Kupfer, Thomas and Ngeow, Chow-Choong and Nugent, Peter and Ofek, Eran and Prince, Thomas A. and Riddle, Reed and Walters, Richard and Ye, Quan-Zhi},
abstractNote = {Presented here is 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.},
doi = {10.1088/1538-3873/ab0c2a},
journal = {Publications of the Astronomical Society of the Pacific},
number = 1000,
volume = 131,
place = {United States},
year = {2019},
month = {4}
}

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    Works referencing / citing this record:

    General relativistic orbital decay in a seven-minute-orbital-period eclipsing binary system
    journal, July 2019


    simsurvey : estimating transient discovery rates for the Zwicky transient facility
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    • Feindt, Ulrich; Nordin, Jakob; Rigault, Mickael
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