Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009pasp..121..885k&link_type=abstract
Publications of the Astronomical Society of the Pacific, Volume 121, issue 882, pp.885-896
Astronomy and Astrophysics
Astronomy
7
Astronomical Instrumentation
Scientific paper
The Fan Mountain Near-Infrared Camera (FanCam) provides the University of Virginia's 31 inch telescope with a near-infrared observing capability that is relatively unique among small-aperture telescopes. FanCam features an 8.7'×8.7' field of view on a 1024×1024 Teledyne Imaging Sensors HAWAII-1 detector array. The instrument mounts at the f/15.5 focus of the 31 inch telescope. Its seeing-limited optical design, optimized for the JHK atmospheric bands, includes a field stop at the telescope focus, a doublet collimator, two eight-position filterwheels straddling a Lyot stop, and a doublet reimager. Four fold mirrors wrap the optical path onto a compact optical bench. The 0.51" pixel -1 plate scale leads to a slightly oversampled point spread function for the typical seeing of 1.5″. The entire optical train is encased in a cryogenic dewar cooled by a closed-loop cooling system. This paper describes the optical, mechanical, cryogenic, and electronic design of the camera as well as some early results that illustrate the camera's capabilities.
Kanneganti Srikrishna
Lam Charles R.
Nelson Matthew J.
Park Chan
Skrutskie Michael F.
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