Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.217..665w&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 217, Dec. 1, 1985, p. 665-668.
Astronomy and Astrophysics
Astronomy
2
Astronomical Photometry, Comets, Ice, Space Observations (From Earth), Error Analysis, Infrared Spectra, Visible Spectrum
Scientific paper
The results of observations of Comet Crommelin on Mar. 23, 27, and 30, 1984 are presented. Visual waveband observations are obtained with the Steavenson 30-in. telescope using diaphragms of various sizes and measurements are made at the four Stromgren wavebands. Infrared observations of Comet Crommelin are obtained using a 3.8-m telescope with a 6.2-arcmin diaphragm and a 55-arcsec E-W chop in the J(1.25 micron), H(1.65 micron), and K(2.2 micron) filters. The possible error in the magnitude of the comet is evaluated. A comparison of the visual observations from two different diaphragm sizes is presented. The data reveal that the comet is approximately 13 magnitude in most wavebands, and the brightness did not change during the days observed.
Eaton N.
Vedi K.
Williams Iwan P.
Williams Peter G.
Zarnecki John C.
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