The Photographic Determination of Stellar Parallaxes with the 60- and 100-INCH Reflectors. Seventeenth Series.

Abstract

Trigonometric parallaxes determined with the 60- and 100-inch reflectors are given for 25 fields, including 26 stars, 20 of which have photographic absolute magnitudes of +10 or fainter; 5 are even +15 or fainter. A list is given of the 21 stars known at present for which the absolute photographic magnitude is fainter than + `5