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RA: 03h 44m 34s
Dec: +32° 09′ 45″
Ch: MSA:140, U2:95, SA:4
Type: reflection nebula
Mag: B=?, V=?
IC 348 = IC 1985, which see. Dreyer put this into the first IC apparently without seeing Safford's footnote which reads, "A loose cluster with nebula." All that appears in the IC description is Safford's "vL, vgbM, pB" rearranged into the usual brightness-size-concentration order.
Whatever happened, Safford is right -- there is a cluster associated with this nebulosity. Barnard did not mention the cluster, either, in his discovery note for IC 1985, though he examined the object both photographically and visually with the Yerkes 40-inch.
Ced 20 (IC 348)
Position (1900): RA 3 38.3, Dec + 31 51
Star: 31 643 (Mp=9.0, V=8.6:, SpT=B6, A1)
Spectrum of nebula: continuous spectrum (observed)
Classification: Neb associated with mainly one star (which may be multiple) - star surrounded by a neb envelope without conspicuous structure (eg. lambda Scorpii)
Notes: "IC 348. Disc. Safford (The NGC appendix). (76, 88 Pl 16, 91, 93 Pl 3, 194, 196, 209, 216, 274, 366, 486, 576, 630 Pl 29, 715). +31 643 = Boss 4465."
Lynds, B.T. (1962) Catalogue of dark nebulae. Astrophys.J.Suppl.Ser. 7, 1-52. [also: computer datafile: VII/7A]
= IC 348, Ced 20
Pos (1950.0) 03:41.4, +32:01
Size: 3x2 (blue), 3x2 (red).
Bernes, C. (1977) A catalogue of bright nebulosities in opaque dust clouds.
= Bernes 67, = VdB 19
= DG 23, [RK68] 13, VdB 19, Bernes 67, IC348, GN 03.41.5, Ced 20
Class: C (reflection neb)
Comments: 2 stars?
by Jim Lucyk: Vehrenberg's Atlas of Galactic Neb-1 p28.
Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "1 degree x 2 degree extent! surrounds 4M Omicron PER; use wide field and N-filter; DK NEB B-4 nearby, 30' S and a little W of Omicron PER."
12-inch f/10 SCT (76x, 218x)
Horseshoe of stars surrounds the double star Struve 439 which is a nice double star contain a blue pair. I could not detack the nebulosity, will go back again.
12-inch f/10 SCT (76x, 218x, 346x)
Consist of only about 7 faint stars in a half moon shape around Perseus (Atik)??. Nebulosity can be seen between the stars with a faint double star to the NW. Weet nie wat hier aangaan nie sal kyk…
Observing site: Little Tycho Observatory
[3h 44m 30s, 32° 17m 0s] An interesting cluster. There are two fairly bright pairs on either side (east and west) and a spray of fainter ones between them. Bright Omicron Per is just to the north. This would be better in darker, steadier skies.
The Messier objects
The Bennett objects
The Caldwell list
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