David Bretz


Images of the central region of the open cluster IC 1805 were made with a 2033 x 2044 Kodak CCD imager using broad-band filters corresponding closely to the standard B, V, R, I, system of Johnson. Calibrated magnitudes were measured for 136 stars in the cluster, and temperatures and masses were estimated for 115 of these. A mass function was derived as defined by Scalo (1986) and is compared with an earlier determination for this cluster. The mass function also is compared with that of a similar star-forming region in Cygnus and with the initial mass function of field stars. A brief overview of CCD design and operation is included, along with some specifics about the R.I.T. camera, image reduction, and photometry procedures. IV

Library of Congress Subject Headings

Astronomical photometry; Charge coupled devices; Data reduction

Publication Date


Document Type


Department, Program, or Center

Chester F. Carlson Center for Imaging Science (COS)


Ninkov, Zoran


Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: QB127.4 .B748 1995


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