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Type: galaxy, E...
Mag: B=11.95, V=10.93
Size: 3.548′ x 3.09′
PA: 105°
Synonyms: H II-311
Discovered in 1785 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "cB, S, mbM."
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads E,R,BM.
Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12.2M; 1' diameter; bright, small and round; with much brighter center; 50' to NNW is faint SP GAL N2983 (12.5M; 2' x 1' extent) just S of 6.6M star (SAO 177893)."
Steve Coe, observing with a 17.5" f/4.5 at 100X, notes: "Pretty bright, Round, bright Nucleus, Pretty large companion faint, Small, somewhat brighter in the middle
Steve Coe (1992, The Deep-Sky Observer, Webb Society, Issue 1) observing with a 17.5-inch f/4.5 at 100x notes: "pB, R, BN, pretty large companion faint, small, somewhat brighter in the middle."
POSS: lies 10' SE of br *. gx sl elong NE-SW. m13 *s (all of 'em) at 2'.0
in pa257, 45" in pa223, three *s at ~1'.2 in pa~135. no reasonably br
* to N. M-3-25-18 at 2'.3 in pa257.
15cm - seen @ 100x: 2' diam ,circ. a dull even light.
25cm - pretty br, circ. broad core 40" across w/m13 *ar nuc. SE 1' is m12.5 *.
gx elong indef: circ, 1' diam w/indef edges.
30cm - easy. SE of br *. star on N, on WSW are two. 1' diam w/br 30" core.
Observing site: Little Bennett Regional Park
Telescope: C-11
[9h 44m 18s, -21° 17' 0"] A hard to see smudge, lost in the Damascus dome of light. Needs a darker southern sky. Burnham: E1
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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