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gamma Cygni Nebula

IC 1318, Ced 176c, LBN 245, LBN 251, Sh 2-108A, gamma Cygni Nebula

RA: 20h 22m 13.7s
Dec: +40° 15′ 24″

Con: Cygnus
Ch: MSA:1128, U2:84, SA:9

Ref: NED, Corwin (2004)

(reference key)

Type: bright nebula

Mag: B=?, V=?

Size: ?
PA: ?

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History and Accurate Positions for the NGC/IC Objects (Corwin 2004)

IC 1318. Gamma Cygni is apparently near the center of an extended region of very faint nebulosity. Barnard discovered this photographically, and comments in his Milky Way atlas that most of the nebulae do not show in the printed version of the plate. It is, however, well-seen on the prints from the Palomar Schmidt.

Rather than try to locate the center of this extended nebulae, I've simply adopted the position of gamma Cyg itself.

Published comments

Cederblad, S. (1946) [VII/231]

Ced 176c (IC 1318a)

Position (1900): RA 21 12.5, Dec + 41 30

Star: +39 4159 (Mp=3.0, V=2.32, SpT=F8p)

Spectrum of nebula: emission spectrum (observed)

Classification: Neb associated with mainly one star (which may be multiple) - Fan-shaped object (eg. IC 59)

Size: 24.5'x17'

Notes: "Ced 176 The nebulous region around {gam} Cygni. Ced 176 c = The nebula called {gam} Cygni a by Hubble in (366)."

Cederblad, S. (1946) [VII/231]

Ced 176f (IC 1318b)

Position (1900): RA 21 24.8, Dec + 39 37

Star: +39 4159 (Mp=3.0, V=2.32, SpT=F8p)

Spectrum of nebula: emission spectrum (observed)

Classification: Neb associated with mainly one star (which may be multiple) - Fan-shaped object (eg. IC 59)

Size: 10'x10'

Notes: "Ced 176 The nebulous region around {gam} Cygni. Ced 176 f = The nebula designated {gam} Cygni b by Hubble (366). R. IC 1318, discovered by Barnard in 1892 (54), refers to {gam} Cygni surrounded by large patches of nebulosity. The main parts are situated as given in the catalogue, and they are identical with Hubble's: {gam} Cygni a, b (No 176 c, f). NGC 6914 was discovered by Stephan in 1881 (702). WP 210. (38, 74, 88 Pl 76, 93 Pl 44, 114, 196, 208, 216, 239, 253, 288, 294, 304, 322, 337, 366, 486, 621, 630 Pl 17. 715, 716, 718, 722, 725, 781, 806). {gam} Cygni = +39 4159 = HD 194093 = Boss 28338."

Lynds, B.T. (1962)

Lynds, B.T. (1962) Catalogue of dark nebulae. Astrophys.J.Suppl.Ser. 7, 1-52. [also: computer datafile: VII/7A]

Modern observations

Brian Skiff

6cm - f neb mixed w/m9 & 10 *s. mostly elong N-S, w/a close grp of three *s on N side. 2deg NW of gamma Cyg.

15cm - elong patch nr m8 * at about 20h17m +41.8 [2000] is pretty obvious @ 30x w/o filts. mild UHC enhancement, [OIII] weakens it, or is not helpful. elong NE-SW, 30'x10', brtst NE of m8 *. extends vaguely SW about 1 deg, but hard to define due to losfcbr and competing *s. nothing for sure for part E of gamma Cyg. BS, 17June1991, Anderson Mesa.

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