NGC 7380 (Lund 1022, Cr 452) / Sh2-142 (LBN 511) Open Cluster / Bright Nebula in Cepheus
Located at: RA 22 hours 47 minutes 00 seconds, Dec +58 degrees 06 minutes 00 seconds
Size: 12' (20') / 35' x 18.5' Magnitude: 7.2 / -- Class: III 2 m n / Emission (Sharpless) 3 1 1
North is up
West to the right
8" f5 Newtonian reflector
ST-8XME, self-guided, binned 1x1, temp -10c & -15c, camera control MaxIm DL 4.56
Lumicon Red filter, 910 minutes (91 x 10 minute subs), 09/5/6/7/8/9/2011; seeing 2.5-4.6 FWHM per CCDStack
CCDStack 2.24.4110.20701, Photoshop CS 5.1
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)
|Notes:||Shot this object with lots of moon and a heat wave ... resulting in
poor seeing on half of the imaging run ...
According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of the open cluster is 20 arc minutes.
From the NGC / IC Project:Contemporary Visual Observation(s) for NGC 7380
NGC 7380 = Sh 2-142 = LBN 511 = Cr 452 22 47 21 +58 07.9 V = 7.2; Size 25x30 17.5" (10/30/99): at 100x with an OIII and UHC filter, a bright triangular- shaped nebulosity (Sh2-142), 8'-10' diameter, is superimposed on a rich grouping of stars (N7380) within a rich milky way field. The brightest mag 8.5 star (very unequal double) is at the west vertex. Also a wide strip of nebulosity is attached near the SE vertex and extends to the SW. A dark band appears to separate this strip from the triangular patch. The surrounding region appears weakly nebulous and the "edge" can be traced with some certainty a ways to the north. 17.5" (7/31/92): at 100x, about 40 stars in a 10' diameter. The brighter stars form a "V" or chevron pattern. The brightest star is at the W tip of the "V" and is an unequal double mag 8.6/13. The cluster appears to be encased in nebulosity especially from the mag 8.6 star to the star at the E tip of the "V". Using an OIII filter the nebulosity is quite prominent with some structure and encases the entire cluster. A lane of nebulosity oriented SW-NE extends beyond the cluster from the star at the E end of the "V" and nebulosity also extends W of the mag 8.6 star. The double star O?480 = 7.6/8.6 at 30" is in the field to the W. 13" (10/26/80): ~30-35 stars in a triangular outline, 10'-12' in diameter but not rich. - by Steve Gottlieb