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Type: dark nebula
Note (supplied by Bill Gray, Project Pluto): Diffused dark spot
"The following observations, therefore, were made with the 6-inch Cooke refractor at Brockhurst, usually with a fine achromatic Kellner eyepiece of 1-inch focus and field of 36' ... observed on two nights, commencing in 1929 August and ending in December ... on very clear nights, and in the total absence of the moonlight, when the Milky Way was conspicuous."
Barnard 41: "Very large dense cloud np psi Ophiuchi; too large for field of 36'; like an opaque veil, not a star to be seen. Identical with one of Herschel's starless fields."
The SAC 4.0 database comments: "Two clouds 2 degrees.5 and 4 degrees following v Sco"
The Messier objects
The Bennett objects
The Caldwell list
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