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Michael A. Stecker
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B86 and NGC 6520
B86 is a small intensely black dark nebula in the northwest portion of the Large Sagittarius Star Cloud. It is 4 arcminutes in diameter. Close to B86 is a small open cluster of stars named NGC 6520. This cluster is about 6 arcminutes in diameter and is magnitude 7.6. The area is in the richest star cloud in the Milky Way. The stars are so numerous that there is essentially no dark sky seen between them.
Photographic Data:
The image is a composite of two 30-minute
exposures made with an Astro-Physics 155 mm f/7 EDF refractor and Pentax 6x7 camera body. The film used was unhypered Kodak Pro 400 PPF 120. The image was cropped and greatly enlarged. |
