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Synonyms: H II-759
Discovered in 1788 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, FNM, 8 or 10' long, 2' broad."
A supernova erupted in this galaxy in 1940 (14.0p)
(Sulentic and Tifft 1973) notes that this is a 11.5 mag galaxy. Their coded description reads EON,B&LG,BM,EQDKLN.
G. de Vaucouleurs ("Galaxies and the Universe", Chapter 14 - Nearby Groups of Galaxies) notes that the five brightest members of the NGC 5866 Group are NGC 5866, NGC 5907, NGC 5879, NGC 5905 & NGC 5908.
This galaxy appears on page 25 of "The Hubble Atlas of Galaxies" by Allan Sandage (1961, Washington, DC).
by Jim Lucyk: Sky&Tel. 1/81 p23, Astronomy mag. 2/83 p77, Astronomy mag. 4/87 p106, Vehrenberg's Atlas of DS Splendors (3ed) p156, Astronomy mag. 6/78 p52-53, Deep Sky #3 Su83 p17, Burnhams V2 p874, Hubble Atl.of Gal. (Sandage 1961) p25, Galaxies (Ferris,1982) p111, The Astrograph 6-7/8 p88.
de Vaucouleurs, G. (1975) Nearby groups of galaxies. In: Kuiper, G. (ed) Stars and Stellar Systems. Volume 9: Galaxies and the Universe. Chapter 14, p557.
5. The nearer groups within 10 megaparsecs
G5. M101 (NGC 5457) Group. (may consist of 2 separate multiplets centred on M51 and M101.
Brightest members: 5457, 5194, 5055, 5195, 5585.
This is a traditional group, but its membership is somewhat uncertain. It is included by van den Bergh in his extended M94 group, but Holmberg and Sersic make it a separate group. … The major members, then, are M101 (NGC 5457) and its satellites NGC 5204, NGC 5474, NGC 5585 and the wide pair formed by M51 (NGC 5194 and companion NGC 5195) and M63 (NGC 5055); a probable member is NGC 5949, and possibly some outlying systems including NGC 4605, NGC 5907, NGC 6503, A1353 (Ho IV) and A1339 (Ho V). Many dwarfs are concentrated in the region … Except for NGC 5195 (type I0) all bright members of the group are spirals of type later than Sb and dwarf Magellanic irregulars … the overall dimensions of the group are 23° x 16°, and agan there is no central condensation.
Houston calls this galaxy "a splinter of milky light". At 11th mag it appears 8' long and 1' wide in a 4-inch, and a 10-inch reveals extensions to about 11'. He calls it "one of the most remarkable objects in the sky for telescopes of medium size." Houston notes: "It looks in small telescopes like a dim ribbon about 0.5' wide, quite unlike the typical cigar-shape of an edge-on galaxy. Even in a 10-inch, no thickening in the middle of its 11' length is noticeable.
Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "11M; 11' x 0.6' extent; silver sliver with little brighter center and 14M stellar nucleus; axis oriented NNW-SSE; 13M star 1' WSW of core; !good supernova prospect! 45' due S is soft SP GAL N5905 (12.5M; 2' x 1' extent); 15' ESE of N5905 is very soft SP GAL N5908 (13M; 2' x 0.7' extent)."
POSS: no * vis S of core (25cm). other *s godd.
15cm - nope. Roof.
- pretty f, 5'-6' long. only * W of core vis (cf 25cm obs #2). vague
hints of detail in core. BS, 6Jun1981, Slate Mtn.
25cm - vthin in pa150, 6'x0'.5. pretty f w/sl brtning to cen. outer parts seen
better on S side. fairly smooth brtness. Roof.
- 190x: pa150, 9'x0'.75, br obj. core thin, doesn't bulge from halo, 2'
long. W edge seems more diffuse, esp along core. N side of halo extends
1'.5 past m14 * off NE flank; m13 * on W of core; halo goes S just to
m14.5 * 2' off SE tip. core has *ings; S 3' of brtst part of center is
disturbance in arms---prob m14 *. BS, 6Jun1981, Slate Mtn.
30cm - wow! thinnest yet! 149x: gives 6'x0'.8 w/mod concen. 238x: easily
9'x0'.8. veven brtning through core, no nuc. dk lane evident for 3' on
E side of pa150 needle. m13.5 * 1' W. halo uneven. Roof.
Observing site: Pinnacles overlook
[15h 15m 54s, 56° 19m 0s] A lovely edge on spiral. A streak of light with whispy ends, which is perhaps an optical illusion, and a small, bright nucleus.
The Messier objects
The Bennett objects
The Caldwell list
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