Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasp..106..909n&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 106, no. 702, p. 909-914
Astronomy and Astrophysics
Astronomy
45
Cameras, Control Equipment, Data Acquisition, Equipment Specifications, Infrared Astronomy, Line Spectra, Mapping, Broadband, Emission Spectra, Image Processing, Infrared Telescopes, Polarimetry, Star Formation
Scientific paper
A near-infrared (1.0-2.5 micron) camera in use at the Canada-France-Hawaii Telescope and at the Observatoire du Mont Megantic 1.6-m telescope is described. The camera is based on a NICMOS3 256 x 256 HgCdTe array detector. While it is used for broad-band imaging and polarimetry through the standard J, H, and K filters, a distinguishing feature of its design is the use of circular variable filters for spectral line imaging in regions of strong continuum emission. The control system was designed to minimize overhead and be simple to use and to maintain. The performance of the instrument is described and illustrated with images of the H2 emission from the Cepheus A star-formation region and a K-band image of the environment of the quasar 3C 345.
Doyon Rene
Murphy David C.
Nadeau Daniel
Rowlands Neil
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