Astronomical observations at 10 and 20 microns with the NRL Infrared Camera

Details Astronomical observations at 10 and 20 microns with the NRL Infrared Camera Astronomical observations at 10 and 20 microns with the NRL Infrared Camera

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasp..104..127o&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 104, Feb. 1992, p. 127-139. Research supported by SDIO,

Astronomy and Astrophysics

Astronomy

4

Atmospheric Windows, H Ii Regions, Infrared Astronomy, Infrared Photography, Infrared Telescopes, Astronomical Observatories, Calibrating, Cameras, Infrared Sources (Astronomy)

Scientific paper

An IR camera is described and demonstrated with results of astronomical observations of star-forming regions including NGC 2264/IRS1 and NGC 7538/IRS1. The IR camera comprises a 10 x 50-element Si:As hybrid array with a peak sensitivity of 18-22 microns, and near-simultaneous observations are possible in the 10 and 20-micron atmospheric windows. Filters at 8, 10, 12, and 12.4 microns are incorporated in the device with a 18-24-micron broadband filter and K, L, and M filters. The astronomical images of three star-forming regions and several stellar calibrators show bright IR sources and allow the calculation of deconvolved sizes. A scheme is successfully employed to remove an overall dc component and a linear east-west background gradient. Based on the integration times and dynamic range the present system is shown to be of value for the study of bright moderately extended astronomical objects.

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