NGC 7538 (SH2-158, LBN 542) Bright Nebula in Cepheus

Located at: RA 23 hours 13 minutes 42 seconds, Dec +61 degrees 31 minutes 09 seconds

Size: 9.7' x 6.1' Magnitude: -- Class: HII (ionized) region (Sharpless) 2 3 3

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

 Red (Hoya 25A) filter, 170 minutes (17 x 10 minute subs), 09/4/2006

Processing:

 CCDStack 1.1, Photoshop 7.0

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes:

Another in the quartet of objects including M 52, NGC 7510 and "The Bubble". See the 14.5" version.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 7538

NGC 7538 = LBN 542 = Sh 2-158
23 13 38 +61 30.7
Size 10x5

17.5" (8/10/91): fairly large elongated emission nebula 2.0'x0.75' oriented NW-
SE.  Surrounds two mag 11.5 stars oriented SW-NE (PA = 35) with a separation of 
30".  The nebulosity extends SW of the pair and is brightest just west of the 
pair.  A mag 15 star is at the SW end and a mag 14 star is 30" W of the southern 
mag 11.5 star.  At 100x using an OIII filter the nebulosity is very bright and a 
fainter glow also extends east of the pair to a size of 3'x2'.

8": faint nebulosity with two mag 12 stars involved.  Appears elongated and 
fairly large.  Easy to view with averted.

- by Steve Gottlieb