NASA NTRS ยท 19730022059
Photometric standards
Abstract
Problem solving by means of photometric standards is discussed in the light of its application to variable star observations. The North Polar Sequence is covered in detail from both historical and functional standpoints, as are the so-called Kapteyn Areas and Harvard Standard Areas.
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Sharov, A. S.. 1973-07-01. Photometric standards. https://ntrs.nasa.gov/citations/19730022059
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