The WIYN Serendipity Project: High Speed Guide Star Photometry at the WIYNObservatory

Details The WIYN Serendipity Project: High Speed Guide Star Photometry at the WIYNObservatory The WIYN Serendipity Project: High Speed Guide Star Photometry at the WIYNObservatory

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.2210f&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #22.10; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

The WIYN Observatory currently operates a prototype orthogonal transfer CCD array camera called OPTIC. During fall 2006, a next generation OTCCD camera, QUOTA, will begin commissioning as a pathfinder toward the implementation of a one-degree OTCCD camera (the One-Degree ImagerODI) to be on-line at WIYN in 2009. Orthogonal transfer CCD arrays use rapid readout of a set of guide stars to perform on-chip tip/tilt corrections. The use of OTCCDs allow tip-tilt correction over the entire focal plane, not simply a small central area. Images of the guide stars are obtained at rates as fast as 100Hz although 20-30 Hz is typical. These guide star images are often seen as scientifically uninteresting, as mere tools to get the best possible image quality for the scientific object. The Serendipity project will make use of the guide star video images to study bright star stellar variability without any loss of telescope time. We have developed a method to perform real-time photometry of the guide star image streams, providing a light curve of the guide star and allowing the destruction of the video files, saving time and storage space. In this paper we outline OTCCDs at WIYN, describe our photometric methods, and explore the science possibilities offered by the WIYN Serendipity Project.

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