Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991s%26t....82...31m&link_type=abstract
Sky and Telescope (ISSN 0037-6604), vol. 82, July 1991, p. 31-35.
Astronomy and Astrophysics
Astronomy
Charge Coupled Devices, Hubble Space Telescope, Infrared Astronomy, Pixels, Astronomical Photometry, Infrared Imagery, Infrared Telescopes, Near Infrared Radiation
Scientific paper
An infrared CCD camera containing an array with 311,040 pixels arranged in 486 rows of 640 each is tested. The array is a chip of platinum silicide (PtSi), sensitive to photons with wavelengths between 1 and 6 microns. Observations of the Hubble Space Telescope, Mars, Plato, and moon are reported. It is noted that the satellite's twin solar-cell arrays, at an apparent separation of about 1 1/4 arc second, are well resolved. Some two dozen video frames were stacked to make each presented image of Mars at 1.6 microns; at this wavelength Mars appears much as it does in visible light. A stack of 11 images at a wavelength of 1.6 microns is used for an image of Jupiter with its Great Red Spot and moons Io and Europa.
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