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RA: 16h 50m 5.03s
Dec: +42° 44′ 23.4″
Ch: MSA:1136, U2:80, SA:8
Type: galaxy (in cluster), SB
Mag: B=12.9, V=?
Size: 2.344′ x 1.047′
Synonyms: H III-727
Discovered in 1788 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "cF, S, E in parallel."
The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy. Their coded description reads IRREL,MBM,HISB, DIF ARMS OR FILS N&S.
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12.9M; 2.1' x 0.8' extent; very faint and small ellipse with brighter middle; axis oriented WNW-ESE."
POSS: pa113. irreg outline dur to oblique open two-arm spiral warp(?),
thus dk area E is okay. m14 * 2'.0 N.
15cm - not vis. Roof.
- mod f @ 50x. sharply tapered halo in pa125, 2'.5x1'. mod broad concen
to rounded oval core 0'.8x0'.5, but no sharp nuc. m14.0 * 2' N, halo
def longer than distance to this *. BS, 4Jul1989, Anderson Mesa.
25cm - sm, 1'.25x0'.75 in pa90. sl brtr to cen, but no sharp nuc. Roof.
- vis @ 50x. 140x: modlosfcbr, 1'.5x1' in pa100. broad cen brtning w/more
nrly circ core barely defined from halo. seems irreg, poss dk spot on
E side of center. BS, 23May1982, Anderson Mesa.
30cm - found @ 140x w/in 1'.5\deg circlet of five or six m7.5 *s. fairly f and
sm. 220x: 1'.5x0'.8 in pa110. sl concen to broad core and occas sub*ar
The Messier objects
The Bennett objects
The Caldwell list
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