NGC 6749 = Be 42 = C1902+018 = OCL-91 = Lund 876
19 05 15.2 +01 54 03
V = 12.4; Size 6.3
17.5" (7/1/00): very faint, very low surface brightness globular in a dusty
portion of the Aquila milky way (dimmed by at least 4.5 magnitudes of
extinction). The core is 15"-20" slightly brighter spot less than 1' SW of a
mag 12 star. The surrounding halo is just a weak glow with averted vision, 2'-
2.5' in diameter with an ill-defined edge, and just brighter than the milky way
background. The glow encompasses the mag 12 star on its northeast side but does
not reach two mag 13.5 stars off the south side. This cluster would most likely
be overlooked if just quickly scanning the field and along with N6380 is one of
the two most difficult NGC globulars!
17.5" (7/24/95): very faint, ~3' diameter, unusually low surface brightness for
a globular cluster with only a very weak central brightening. A mag 12 star is
superimposed on the N side and two mag 13.5 stars are at the S end (not
members). The core appears to be located ~1' SW of the mag 12 star. Does not
appear like a globular but rather a diffuse nebula in a rich milky way field.
Difficult to determine exact outer extent.
13": extremely faint, moderately large, very low surface brightness and fades at
high power. Near the visual threshold this is one of the two faintest NGC
globulars along with N6380. Estimate V = 14. Located at the NW edge of an
elongated group of six mag 12/13 stars and 25' ESE of mag 5.8 SAO 124203. The
position listed in the NGC, SC2000, N2000, U2000, and DSFG are all about 7' too
Discovered by JH (h2029). His description "a cluster of loose small stars of
various magnitudes; fills the field." appears to describe a larger clustering
including the globular. Although listed as a GC in the RNGC, the new
description quotes Carlson and incorrectly states "no cluster". Listed in Lynga
as an open cluster = Berkeley 42. The position listed in SC2000, NGC, L&S,
N2000, U2000, and DSFG are all wrong, mostly in Dec ~7'. Skiff letter on
subject 3/93. Exact position 19 05 15.2 +01 54 03.
- by Steve Gottlieb