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RA: 13h 56m 16.83s
Dec: +47° 14′ 6.8″
Con: Canes Venatici
Ch: MSA:588, U2:76, SA:7
Type: galaxy, SBa
Mag: B=12.5, V=?
Size: 3.548′ x 1.659′
Discovered in 1787 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "cB, extended 30 degrees sp-nf, BN, vg faint branch."
Burnham calls it a 12th mag spiral galaxy in Canes Venatici, measuring 3' x 0.6', which he describes as "bright, large, much elongated, suddenly brighter in the middle to a nucleus, has an outer ring."
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads EL,BM,DIFWINGS.
This galaxy is listed in the "Third Reference Catalogue of Bright Galaxies" as having an outer ring of 3.65 arcminute diameter.
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12M; 3' x 0.6' extent; soft slash with axis oriented NE-SW and stellar core; 9M star 11' to SW."
POSS: pa42, but non-dominating core in pa13. a highly-inclined barred
6cm - reg[istered?] [regularly vis?] w/averted vis but no pa. 2' diam.
15cm - 1'.5x0'.5 in pa30. *ry texture. *ar nuc.
25cm - up to 3'x0'.5, core brtr and somewhat oval while halo is spindly.
30cm - not vbr halo, but core easy. 2'x0'.6 in pa30. core shows elong w/pointy
ends. steady br sub*ar nuc.
Houston writes that this galaxy "rarely makes it to print" and lies just off the handle of the Big Dipper. It is "unmistakable as a galaxy in my 4-inch Clark ... remember to keep the magnification up, since my 5-inch scope with its fixed 20x has a much more difficult time with the galaxy than does the 4-inch at 60x." He also noted: "This galaxy is well seen in a 3-inch at 50x but harder in a 5-inch moonwatch at 20x."
Observing site: Little Bennett Regional Park
[13h 56m 18s, 47° 14m 0s] A nice edge on. B: Sa.
The Messier objects
The Bennett objects
The Caldwell list
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