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Type: galaxy, Sb
Mag: B=13, V=?
Size: 3.019′ x 1.737′
Synonyms: H II-418
Discovered in 1785 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, iR, mbM."
The NGC description reads: "pretty bright, round, very suddenly much brighter in the middle, two or three stars involved".
Burnham calls it a 12.6 mag spiral galaxy measuring 1.8' x 0.8' which is pretty bright, elongated and much brighter in the middle.
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads E,SLEL,BM,DKLN SUSP.
It was called "comfortably bright" by Houston as seen with a 4-inch refractor.
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12.6M; 2' diameter; soft and small with much brighter center, but no stellar core."
Steve Coe, using a 13" f/5.6, notes: "Pretty faint, pretty small, little elongated 1.5 X 1 in PA 30 and very suddenly much brighter in the middle at 135X. There is a 13th mag star to the south of the nucleus."
15cm - not vis.
- mod f @ 80x. 140x: oval elong NE-SW, 1'.2x0'.9, or length ~sep of two m13
*s NNE, 3:2 ratio. f halo w/broad concen, sm circ core 20" across w/sharp
concen to sub*ar nuc. threshold * SSE? BS, 7Jun1991, Anderson Mesa.
25cm - found @ 75x. f and diffuse, looks elong in pa0, 1' diam. broad even glow
that gradually brightens twd center.
30cm - mod f. elong in pa25 @ 220x. 1'.5x0'.8 w/mottling in core and halo. 140x:
nuc is *ar, not as much @ 220x.
The Messier objects
The Bennett objects
The Caldwell list
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