Publisher
SPIE-INT SOC OPTICAL ENGINEERINGCitation
Robert L. Seaman and Alex R. Gibbs "Timekeeping infrastructure for the Catalina Sky Survey", Proc. SPIE 10704, Observatory Operations: Strategies, Processes, and Systems VII, 1070408 (10 July 2018); doi: 10.1117/12.2313925; https://doi.org/10.1117/12.2313925Rights
© 2018 SPIE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Time domain science forms an increasing fraction of astronomical programs at many facilities. Synoptic and targeted observing modes of transient, varying, and moving sources rely on precise clocks to provide the underlying time tags. Often precision is mistaken for accuracy, or the precise time signals never reach the instrumentation in the first place. We will discuss issues of deploying a stable high-precision GNSS clock on a remote mountaintop, and of conveying the resulting time signals to a computer in a way that permits hardware timestamping of the camera shutter (or equivalent) rather than the arbitrary delays encountered with non-real-time data acquisition software. Strengths and limitations of the Network Time Protocol will be reviewed. Timekeeping infrastructure deployed for the Catalina Sky Survey will serve as an example.ISSN
97815106196169781510619623
Version
Final published versionAdditional Links
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10704/2313925/Timekeeping-infrastructure-for-the-Catalina-Sky-Survey/10.1117/12.2313925.fullhttps://www.spiedigitallibrary.org/conference-presentations/10704/1070408/Timekeeping-infrastructure-for-the-Catalina-Sky-Survey/10.1117/12.2313925.5807190541001
ae974a485f413a2113503eed53cd6c53
10.1117/12.2313925