Andrew Cooper
Jun 30, 2019    Kaʻohe, Mauna Kea, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 56x
Seeing: 8 Transparency: 7 Moon: 0%

A very dark blot against a rich galactic starfield, on one side is the small cluster NGC6520, on the other a notable orange star, about 5' across with no stars visible in the darkest region

Andrew Cooper
Jun 5, 2005    Vekol Ranch, Maricopa Co., AZ (map)
46cm f/4.5 Deep Violet

Fantastic dark nebula set off on west side by a 6.9mag orange star and the cluster NGC6520 on the east, about 5' in across, roughly triangular in shape, darkest along the west side, very!! thick galactic star field

E.E. Barnard
25cm f/5 Astrograph

Diam. 5', several small stars in it, the cluster NGC 6520 close E, CD-27 12302 (7.4 arcmin) on NW edge. For the visual discovery of this object see Astronomische Nachrichten 108, 370, 1884.

― A Photographic Atlas of Selected Regions of the Milky Way, E.E. Barnard, 1927

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

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