90prime: a prime focus imager for the Steward Observatory 90-in. telescope

G. Grant Williams; Ed Olszewski; Michael P. Lesser; James H. Burge

doi:10.1117/12.552189

30 September 2004 90prime: a prime focus imager for the Steward Observatory 90-in. telescope

G. Grant Williams, Ed Olszewski, Michael P. Lesser, James H. Burge

Proceedings Volume 5492, Ground-based Instrumentation for Astronomy; (2004) https://doi.org/10.1117/12.552189
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

Steward Observatory is currently commissioning a prime focus wide-field imager for the 90-inch telescope located at Kitt Peak. The camera's focal plane array is populated with a mosaic of four thinned Lockheed 4096 x 4096 pixel CCDs. The f/2.98 system provides a plate scale of 0.45"/pixel and a total field-of-view of 1.16° x 1.16°. The optical design includes a four element corrector and six position filter wheel. The first science run was conducted in November 2003. We will describe the design of the "90prime" instrument and results from the commissioning runs.

Citation Download Citation

G. Grant Williams, Ed Olszewski, Michael P. Lesser, and James H. Burge "90prime: a prime focus imager for the Steward Observatory 90-in. telescope", Proc. SPIE 5492, Ground-based Instrumentation for Astronomy, (30 September 2004); https://doi.org/10.1117/12.552189

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