By Edward Emerson Barnard, Gerald Orin Dobek
Edward Emerson Barnard's Photographic Atlas of chosen areas of the Milky manner was once initially released in volumes in 1927. jointly those volumes contained a wealth of knowledge, together with photographic plates of the main attention-grabbing parts of the Milky means, descriptive textual content, charts, and information. in basic terms seven hundred copies have been published, making the unique version a collector's merchandise. Reproduced in print for the 1st time, this variation combines either volumes of Barnard's Atlas. It without delay replicates Barnard's textual content, and comprises excessive answer photos of the unique photographic plates and charts, reordered so they can be noticeable jointly. additionally it is a biography of Barnard and his paintings, a Foreword and Addendum by way of Gerald Orin Dobek describing the significance of the Atlas and additions to this quantity, and a pull-out part with a mosaic of all 50 plates mixed in one landscape.
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Extra resources for A Photographic Atlas of Selected Regions of the Milky Way
There's a better darkish zone belonging to this related process in a = 16h23m, δ = – 19°30 (B 43), from which damaged darkish lanes just a little like these from Rho Ophiuchi, notwithstanding much less marked, run eastward for a few levels. This item is installed the checklist simply because, although now not fully darkish, it really is in part so, and the obtrusive obscuration produced by way of it places it within the category for which is made. The semi-vacant area during which this, the good nebula of Rho Ophiuchi, lies is set three 21 ° in diameter. For references to the visible discovery and early observations of this unusual quarter see Astronomische Nachrichten, 138, 211, 1895; well known Astronomy, five, 227, 1897; 14, 581, 1906; Lick Observatory guides, eleven, 19, 1913 and Plate 36. this can be the center of the most a part of the nice vacant lane that runs east from the area of Rho Ophiuchi. it's approximately 32 broad and has its starting in a vacant quarter within which is the superstar 22 Scorpii (C. D. – 24°12695, 5M. 5). It runs a little northeast to a few = 16h40m, δ = –23°40 . From this element it extends in a damaged chain of darkish spots to a bit south of B sixty three. Its overall size is hence approximately 10°. prolonged northeast and southwest with an abnormal projection southwest that connects it with the Rho Ophiuchi quarter. This seems to be a true, darkish item. this is often an abnormal sq. 15 in diameter, sharply outlined at the east facet and subtle at the west, the place there are damaged extensions for 21 °. The superstar C. D. –34°11418 (9 M. eight) is close to the center. the celebrities C. D. – 34°11422 (9M. eight) and – 34°11427 (9M. nine) are at the japanese border. one in all a straggling workforce towards the japanese finish of the darkish lane from Rho Ophiuchi. abnormal, darkish lanes run west from it to B forty seven. This item is slightly cometary in shape and has a really black middle or head that sharply abuts opposed to the thick stratum of stars; from this it spreads out right into a huge darkish zone with a lot darkish aspect, filling really an area shut southwest of M nine. It hence resembles a dismal comet with a dense and well-defined head and seventy two seventy eight eighty four eighty five 86 87 88 ninety ninety one ninety two ninety eight a hundred 103 104  subtle widening tail. the location of the pinnacle is a = 17h9m57s, δ= – 18°20. 6. it is a notable item. it's a skinny, curved black marking, the precise type of the letter S or the determine five, because the mind's eye or standpoint may possibly dictate. The southeast department runs east for a long way passing shut south of the celebrity C. D. –23°13375 (9M. 1). Its commonplace thickness is ready 2 –3 . the placement within the catalogue is for the southern a part of the determine, or the ground of the S (see Astrophysical magazine, forty nine, 1919, Plate III). This vacant zone, with its extension to the west operating south of Theta Ophiuchi, is obvious to the bare eye (see renowned Astronomy, 14, 580, 1906). B. D. – 20°4865 (8M. 2) close to west finish and B. D. – 20°4869 (9M. 1) close to east finish (see Astrophysical magazine, Plate II). this is often the southern a part of the Trifid nebula, N. G. C. 6514. The darkish markings during this nebula are too popular to insert during this catalogue.