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RA: 20h 55m 49s
Dec: +47° 25′ 1″
Ch: MSA:1106, U2:85, SA:9
Type: reflection nebula
Mag: B=?, V=?
Size: 12′ x 8′
IC 5076 is a fairly small (6 arcmin by 6 arcmin) diffuse nebula west of a bright star. Roberts's position is just east of the star, but as there is nothing else nearby matching his description, I've taken the nebula as the one he found.
Roberts, I. (1898) "Nebulae which are not recorded in the Catalogues found upon Photographs by Isaac Roberts, D.Sc., F.R.S." , A.N. 3509.
Detailed for the first time in this publication.
Ced 185 (IC 5076)
Position (1900): RA 21 52.5, Dec + 47 2
Star: +46 3111 (Mp=5.62, V=5.76, SpT=cB8e)
Spectrum of nebula: continuous spectrum (inferred from sp.t. of illuminating star)
Classification: Neb associated with mainly one star (which may be multiple) - star surrounded by a neb envelope with conspicuous structure (eg. IC 5146)
Notes: "IC 5076. Disc. Roberts 1895 (607). (93 Pl 45 131 48, 603 Pl 23, 610). R. +46 3111 = HD 199478 = Boss 29219."
= IC 5076, Ced 185
Pos (1950.0) 20:54.2, +47:13
Size: 12x8 (blue), 8x8 (red).
Beverly Lynds (Astrophysical Journal Supplement, No 105, 1965) in her Catalogue of Bright Nebulae notes that this nebula is very bright, more prominent on the blue POSS plate and has a maximum size of 7' x 7'.
= DG 165, [RK68] 103, VdB 137, IC5076, GN 20.54.1, Ced 185, Other designations: V2140 Cyg
Class: C (reflection neb)
Photo Index by Jim Lucyk: Deep Sky #7 Su84 p15, Vehrenberg's Atlas of Galactic Neb-2 p106.
Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "9.9M; 7' diameter; faint, large and round; reflection nebulosity surrounds 5.5M star 3 degrees NE of Deneb (Alpha CYG)."
15cm - nothing obvious @ 80x/140x. BS, 17Jun1991, Anderson Mesa.
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