NGC 1535 (PK 206-40.1) Planetary Nebula in Eridanus 

Located at: RA 04 hours 14 minutes 16 seconds, Dec -12 degrees 44 minutes 21 seconds

Size: 60" Magnitude: 9.6 photographic Class: 4+2c

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, 185 minutes (111 x 1.67 minute {100 seconds} subs), 02/1/2014; seeing 2.9-5.0 FWHM per CCDStack

Processing:

CCDStack 2.76.5115.24309, Photoshop CS5.1

Location:

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

Notes: I shot this planetary before the incoming front clouded up the skies ... it was well placed for one night's imaging before the moon would interfere during the next couple of weeks.

View 200% crop.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 1535
NGC 1535 = PK 206-40.1 = PN G206.4-40.5
04 14 15.8 -12 44 22
V = 9.4;  Size 48"x42"

17.5" (12/30/99): this planetary has beautiful, bluish double-shell structure 
which was very evident at 100x surrounding a bright central star.  The view at 
380x and 500x was superb in the good seeing. The double shell envelope was very 
prominent with a bright inner ring, ~20" diameter, with a fairly sharp edge 
embedded in a fainter roundish halo roughly doubling the diameter.  The inner 
shell was irregularly darker surrounding the central star.

17.5" (2/8/91): very bright, fairly small, high surface brightness, mag 12.5 
central star visible, blue color.  This planetary has a double shell structure 
with inner shell slightly elongated and a faint rounder outer shell.  Small dark 
gaps are visible around the central star.

13": at 360x the central star visible surrounded by two shells; a bright annular 
inner shell and a fainter outer halo.

8": bright, greenish, fairly small, round.

- by Steve Gottlieb