Barnard 93

Dark Nebula Barnard 93, in the Sagittarius star cloud M24 in Sagittarius

Right Ascension 18 : 15.6 (h:m)

Declination -18 : 14 (deg:m)

Distance 10 (kly)

Apparent Dimension 15 x 2 (arc min)

Discovered by Barnard in 1913.

Right Ascension	18 : 15.6 (h:m)
Declination	-18 : 14 (deg:m)
Distance	10 (kly)
Apparent Dimension	15 x 2 (arc min)

Looking like a dark comet (actually a black comet in the photograph in this page), Barnard 93 obscures parts of the Small Sagittarius Star Cloud, M24. It is one of the first dark nebulae known, discovered in 1913 by E.E. Barnard (Barnard 1913).

Martin Germano obtained this beautiful photograph of the dark nebula Barnard 93 in the northern portion of star cloud M24. This photo was taken with Martin's 14.5" f/5 Newtonian stopped to f6(12"), 80 minutes on hypered Kodak Tech Pan 2415 film in April, 2002.

This nice Dark Lane (4 Co G) is on the edge of a Galactic Star Cloud in Sagittarius, M24. It is only about 20 minutes east of the more impressive (6 E G) dark lane called B 92. Barnard 93 is centered at 18h 16m 54s -18d 04m 00s.

Also visible in this image, situated near the bottom of the image, slightly right of its middle, and the end of the "tail" of B93, is open star cluster Collinder 469 (Cr 469).

More images by Martin Germano

References

Barnard, E.E., 1913. Dark Regions in the Sky Suggesting an Obscuration of Light. Astrophysical Journal, Vol. 38, pp. 496-501 [ADS: 1913ApJ....38..496B] Here also plates XIX and XXb.
Barnard, E.E., 1919. On the Dark Markings of the Sky - with a Catalogue of 181 Such Objects. Astrophysical Journal, Vol. 49, pp. 1-23 [ADS: 1919ApJ....49....1B] (First edition of Barnard's catalogue of dark nebulae)

Barnard 92 and 93 field - Barnard 92 dark nebula

More images of M24

Amateur images of M24

Hartmut Frommert
Christine Kronberg
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Last Modification: April 7, 2014