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PHOTOGRAPHIC PHOTOMETRY OF STARS IN NGC 457

DAVID O. M. JONES and A. A. HOAG
Publications of the Astronomical Society of the Pacific
Vol. 80, No. 476 (October 1968), pp. 531-543
Stable URL: http://www.jstor.org/stable/40676673
Page Count: 13
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
PHOTOGRAPHIC PHOTOMETRY OF STARS IN NGC 457
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Abstract

The images of 171 stars in the field of the previously well-observed open cluster, NGC 457, have been measured using U, B and V plates obtained with the 84-inch reflector. The primary purpose of this work was to test the suitability of the telescope and iris photometer for photographic photometry and to provide material for use in developing machine reduction routines for handling measures of direct plates.

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