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Proceedings Paper

Astrophysical Research Consortium Telescope Imaging Camera (ARCTIC) facility optical imager for the Apache Point Observatory 3.5m telescope
Author(s): Joseph Huehnerhoff; William Ketzeback; Alaina Bradley; Jack Dembicky; Caitlin Doughty; Suzanne Hawley; Courtney Johnson; Mark Klaene; Ed Leon; Russet McMillan; Russell Owen; Conor Sayres; Tyler Sheen; Alysha Shugart
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Paper Abstract

The Astrophysical Research Consortium Telescope Imaging Camera, ARCTIC, is a new optical imaging camera now in use at the Astrophysical Research Consortium (ARC) 3.5m telescope at Apache Point Observatory (APO). As a facility instrument, the design criteria broadly encompassed many current and future science opportunities, and the components were built for quick repair or replacement, to minimize down-time. Examples include a quick change shutter, filter drive components accessible from the exterior and redundant amplifiers on the detector. The detector is a Semiconductor Technology Associates (STA) device with several key properties (e.g. high quantum efficiency, low read-noise, quick readout, minimal fringing, operational bandpass 350-950nm). Focal reducing optics (f/10.3 to f/8.0) were built to control aberrations over a 7.8'x7.8' field, with a plate scale of 0.11" per 0.15 micron pixel. The instrument body and dewar were designed to be simple and robust with only two components to the structure forward of the dewar, which in turn has minimal feedthroughs and permeation areas and holds a vacuum <10-8 Torr. A custom shutter was also designed, using pneumatics as the driving force. This device provides exceptional performance and reduces heat near the optical path. Measured performance is repeatable at the 2ms level and offers field uniformity to the same level of precision. The ARCTIC facility imager will provide excellent science capability with robust operation and minimal maintenance for the next decade or more at APO.

Paper Details

Date Published: 9 August 2016
PDF: 12 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99085H (9 August 2016); doi: 10.1117/12.2234214
Show Author Affiliations
Joseph Huehnerhoff, Univ. of Washington (United States)
William Ketzeback, Apache Point Observatory (United States)
Alaina Bradley, Apache Point Observatory (United States)
Jack Dembicky, Apache Point Observatory (United States)
Caitlin Doughty, Apache Point Observatory (United States)
Suzanne Hawley, Univ. of Washington (United States)
Courtney Johnson, Univ. of Washington (United States)
Mark Klaene, Apache Point Observatory (United States)
Ed Leon, Apache Point Observatory (United States)
Russet McMillan, Apache Point Observatory (United States)
Russell Owen, Univ. of Washington (United States)
Conor Sayres, Univ. of Washington (United States)
Tyler Sheen, Univ. of Washington (United States)
Alysha Shugart, Apache Point Observatory (United States)

Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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