page_title: WIYN Observatory
section_title: One Degree Imager (ODI)
hierarchical_section_title: WIYN Observatory / Current instrumentation / One Degree Imager (ODI)
caption_attribution_description: English: Orthogonal Transfer Array CCD designed for the One Degree Imager project.
context_page_description: The WIYN Observatory is owned and operated by the WIYN Consortium. Its 3.5-meter telescope is the second largest optical telescope at Kitt Peak National Observatory in Arizona. Most of the capital costs for the observatory were provided by the University of Wisconsin–Madison, Indiana University, and Yale University, while the National Optical Astronomy Observatory provides most of the operating services. The NOAO is an institution of the United States; it is the national optical observatory program and supports a collection of ground-based telescopes at Kitt Peak as well as other locations.
context_section_description: The One Degree Imager (ODI) is the flagship of WIYN's new instrument initiatives. ODI utilizes both WIYN's one degree field of view and excellent image quality. The original design for ODI was to cover the one square degree field using a total of 64 Orthogonal Transfer Arrays (OTAs) with a total of 1 GigaPixel and a pixelscale of 0.11 arcseconds per pixel. Orthogonal transfer arrays allow to actively improve image sharpness by correcting images for tip/tilt motion during the integration. Corrections will be done over the entire field of view, making ODI a unique and competitive instrument in the era of wide-field surveys. ODI is funded by the WIYN partners and the National Science Foundation.
  ODI was first commissioned in a partial or prototype configuration (pODI) using 13 OTAs in the summer of 2012, and was available for science observations since early 2013. pODI was decommissioned in late 2014 to undergo a significant upgrade. The upgraded ODI, now using 30 OTAs in a 5x6 layout was recommissioned in summer 2015 and has been available for science observations since October 2015.
caption: ODI Sensor
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