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Proceedings Paper

The WIYN one degree imager 2014: performance of the partially populated focal plane and instrument upgrade path
Author(s): Daniel R. Harbeck; Todd Boroson; Michael Lesser; Jayadev Rajagopal; Andrey Yeatts; Charles Corson; Wilson Liu; Ian Dell'Antonio; Ralf Kotulla; David Ouellette; Eric Hooper; Mike Smith; Richard Bredthauer; Pierre Martin; Gary Muller; Patricia Knezek; Mark Hunten
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Paper Abstract

The One Degree Imager (ODI) was deployed during the summer of 2012 at the WIYN 3.5m telescope, located on Kitt Peak near Tucson, AZ (USA). ODI is an optical imager designed to deliver atmosphere-limited image quality (≤ 0.4” FWHM) over a one degree field of view, and uses Orthogonal Transfer Array (OTA) detectors to also allow for on-chip tip/tilt image motion compensation. At this time, the focal plane is partially populated (”pODI”) with 13 out of 64 OTA detectors, providing a central scientifically usable field of view of about 24′ x 24′; four of the thirteen detectors are installed at outlying positions to probe image quality at all field angles. The image quality has been verified to be indeed better than 0.4′′ FWHM over the full field when atmospheric conditions allow. Based on over one year of operations, we summarize pODIs performance and lessons learned. As pODI has proven the viability of the ODI instrument, the WIYN consortium is engaging in an upgrade project to add 12 more detectors to the focal plane enlarging the scientifically usable field of view to about 40′ x 40′. A design change in the new detectors has successfully addressed a low light level charge transfer inefficiency.

Paper Details

Date Published: 8 July 2014
PDF: 11 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91470P (8 July 2014); doi: 10.1117/12.2056651
Show Author Affiliations
Daniel R. Harbeck, WIYN Observatory (United States)
Todd Boroson, National Optical Astronomy Observatory (United States)
Las Cumbres Observatory Global Telescope Network (United States)
Michael Lesser, The Univ. of Arizona (United States)
Jayadev Rajagopal, National Optical Astronomy Observatory (United States)
Andrey Yeatts, WIYN Observatory (United States)
Charles Corson, National Optical Astronomy Observatory (United States)
Wilson Liu, WIYN Observatory (United States)
Ian Dell'Antonio, Brown Univ. (United States)
Ralf Kotulla, Univ. of Wisconsin-Milwaukee (United States)
Univ. of Wisconsin-Madison (United States)
David Ouellette, The Univ. of Arizona (United States)
Eric Hooper, WIYN Observatory (United States)
Univ. of Wisconsin-Madison (United States)
Mike Smith, Univ. of Wisconsin-Madison (United States)
Richard Bredthauer, Semiconductor Technology Associates, Inc. (United States)
Pierre Martin, Univ. of Hawai'i at Hilo (United States)
Gary Muller, GMTO Corp. (United States)
Patricia Knezek, National Science Foundation (United States)
Mark Hunten, Lunar and Planetary Science Lab. (United States)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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