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Proceedings Paper

Monitoring a decade of seeing at the NPOI site with quad cell measurements
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Paper Abstract

As a part of regular operations, the Navy Precision Optical Interferometer (NPOI) uses Narrow Angle Trackers (NAT) for atmospheric tip-tilt correction. This correction is done using a quad cell array for each station, and is based on the error signals measured by these arrays. We compiled NPOI NAT jitter information for the period of 2005 to 2014. Here we investigate the correlation of the NAT jitter between different NPOI stations, and determine a correction for shot-noise induced jitter. We present initial results from the correlation between NAT jitter and quasi simultaneous seeing measurements done with the Lowell Observatory 31" telescope, separated by 500 m. We also discuss some limitations of this technique and future improvements.

Paper Details

Date Published: 4 August 2016
PDF: 6 pages
Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99071X (4 August 2016); doi: 10.1117/12.2233088
Show Author Affiliations
Henrique R. Schmitt, U.S. Naval Research Lab. (United States)
J. Thomas Armstrong, U.S. Naval Research Lab. (United States)
Sergio R. Restaino, U.S. Naval Research Lab. (United States)
Gerard van Belle, Lowell Observatory (United States)

Published in SPIE Proceedings Vol. 9907:
Optical and Infrared Interferometry and Imaging V
Fabien Malbet; Michelle J. Creech-Eakman; Peter G. Tuthill, Editor(s)

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