NGC 2392 (PK 197+17.1) Planetary Nebula in Gemini

Located at: RA 07 hours 29 minutes 11 seconds, Dec +20 degrees 54 minutes 39 seconds

Size: 50" Magnitude: 9.9 photographic Class: 3b+3b

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 114 minutes (38 x 3.0 minutes {180 seconds} subs), 03/2/2013; seeing 2.8-3.7 FWHM per CCDStack

Processing:

CCDStack 2.65.4464.17853, Photoshop CS5.1

Location:

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

Notes: Shot this object (for detail) because it was bright and well placed ... There were high clouds streaming in from west, and most of next week is predicted to be cloudy/showery.  I used 180 second (3 min) subs because of its high surface brightness.

View 200% crop.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 2392
NGC 2392 = PK 197+17.1 = Eskimo Nebula = PN G197.8+17.3
07 29 10.8 +20 54 42
V = 9.2;  Size 47"x43"

17.5": using 410x exhibits a prominent double shell structure with a very bright 
inner shell about 20" diameter with a darker central hole surrounding a very 
bright mag 9 central star.  Very high surface brightness and easily takes this 
magnification, bluish color.  The inner shell is surrounded by a thin dark ring 
about 2/3 of the way out from center and a faint barely detached outer halo.  
Located 1.6' S of mag 8.3 SAO 79428.

13": bright mag 9 central star surrounded by a double shell with a bright inner 
disk and a dark ring separates the two shells.

- by Steve Gottlieb