LIRCII--the Lick infrared camera: results using a new 1- to 2.5-um infrared camera built for the 1M and 3M telescopes at Lick Observatory

Details LIRCII--the Lick infrared camera: results using a new 1- to 2.5-um infrared camera built for the 1M and 3M telescopes at Lick Observatory LIRCII--the Lick infrared camera: results using a new 1- to 2.5-um infrared camera built for the 1M and 3M telescopes at Lick Observatory

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2198..744g&link_type=abstract

Proc. SPIE Vol. 2198, p. 744-748, Instrumentation in Astronomy VIII, David L. Crawford; Eric R. Craine; Eds.

Astronomy and Astrophysics

Astronomy

4

Scientific paper

Lick Observatory has recently developed a near IR camera for astronomical imaging. The new camera has been built around the Rockwell International Inc. NICMOSIII 256 x 256 HgCdTe focal plane array. The dewar and optics were manufactured by IR Laboratories in Tuscon AZ, while the electronics, telescope interface, and data system were built at Lick Observatory. The Lick IR camera was designed primarily as a 1 to 2.5 micron Cassegrain imager, however, the dewar can also be operated as a high resolution spectrographic camera for the Lick Coude' Spectrograph in the 1 micron spectral region. At the Cassegrain focus the instrument is used to image faint galaxies, diffuse IR sources in star formation regions, and other astronomical objects. The camera operates at f/17 with focal plane scale reductions of 1: 1.25, 1: 2.5, and 1: 3.75. Thus the optics provide 0.2, 0.4, and 0.6 arcseconds per pixel when used in the Cassegrain mode at the 3M telescope, and 0.6, 1.2, or 1.8 arcseconds per pixel when the camera when used on the 1M telescope. The 1: 1.25 scale of the camera gives a resolving power greater than 60,000 when used with the Coude spectrograph at 1.5 microns. Standard H, J, K as well as narrow band special purpose filters, for spectroscopy, are contained in two independent motorized filter wheels.

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