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RA: 13h 55m 39.97s
Dec: +40° 27′ 42.8″
Con: Canes Venatici
Ch: MSA:608, U2:76, SA:7
Type: galaxy (AGN LINER-type), SBb
Mag: B=11.5, V=?
Size: 4.168′ x 2.884′
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NGC 5371 probably also carries the designation NGC 5390, which see.
Burnham calls it a "fine spiral" in Canes Venatici, 11.5 mag, measuring 3.7' x 3.0', which he describes as "pretty bright, large, round and brighter in the middle."
Synonyms: H II-716
Discovered in 1788 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, L, iR, FN, mbM, 4 or 5' diameter."
The RNGC (Sulentic and Tifft 1973) notes that this is a 11.5 mag galaxy. Their coded description reads S,B,DIF,DKLNS,RG&BAR 2PRINCIPAL BKN ARMS.
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "11.5M; 3' diameter; looks a little oblong; with stellar nucleus; two 9M stars nearby, one a minute or so NE of core, the other 5' N of core; close pair EL GAL N5353 (12.2M; 1.1' x 0.4' extent) and SP GAL N5354 (11.5M; 2' diameter) 25' to WSW and 1' apart; add SP GAL N5350 (11.4M; 3' x 2' extent) 5' NNW of 5353-4 and you have 4 galaxies in one 0.5 degree field!."
POSS: halo pa10; halo barely reaches * W. hard to get overall pa, but greater than about pa30, as per 30cm obs, but * NE may affect this. two *s W 1'.2 apart. rough fld sketch from POSS on card.
15cm - 4'x1'.5 in pa45 in dk sky. no cen brtning whatsoever. fine grainy.
25cm - in dk sky 4'x2'.5 in pa15. m14 *ar nuc w/o core of any sort. m14 *s W of center and W of S flank. br * NE.
30cm - easy. diffuse but fairly well concen. 20" core w/overall size 3'x1'.8 in pa65. halo reaches m13.8 * 1'.8 W, almost to m14 * 2'.2 away.
Observing site: Little Bennett Regional Park
[13h 55m 42s, 40° 28m 0s] A small smudge, roundish, with no pronounced nucleus. SBb?. Burnham: Sb.
The Messier objects
The Bennett objects
The Caldwell list
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