NGC 6826 (PK 83+12.1) aka "Blinking Planetary" Planetary Nebula in Cygnus

Located at: RA 19 hours 44 minutes 48 seconds, Dec +50 degrees 31 minutes 31 seconds

Size: 38" Magnitude: 9.8 photographic Class: 3a+2

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

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

Image:

Lumicon Red filter, 150 minutes (100 x 1.5 minute {90 seconds} subs), 07/18/2013; seeing 2.3-3.5 FWHM per CCDStack

Processing:

CCDStack 2.74.4938.18664, Photoshop CS5.1

Location:

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

Notes: As the monsoonal moisture moved into Southern California, I decided to shoot a couple of high surface-brightness planetary nebulae in Cygnus (see NGC 7026). The sky was hazy with moisture and smoke for NGC 6826, but the surface brightness is so high that even an unprocessed 90 second sub produced a burned out image. This planetary has a faint outer shell ... 150 minutes does not show it well, but it is faintly visible in this inverted image.

View 200% crop.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6826
NGC 6826 = PK 83+12.1 = PN G083.5+12.7 = Blinking Planetary
19 44 48.0 +50 31 31
V = 8.9;  Size 30"

17.5" (8/17/01): beautiful view at 500x; the disc is slightly elongated WNW-ESE,  
with subtle structure.  There is small, slightly darker region around the bright 
10th magnitude central star.  The halo dims slightly along the preceding edge 
with concentration and the edge is not as sharp.  Located 28' E of the double 
star 16 Cygni.

17.5": very bright 25" roundish nebula surrounding a bright 10th magnitude 
central star, slightly elongated ~E-W, high surface brightness.  With direct 
vision appears brighter on the south side.  The planetary is too bright with 
this aperture to have the striking "blinking" effect seen with smaller 
apertures.

8": the famous "blinking" planetary blinks well with this aperture.  Contains a 
bright mag 10 central star visible with direct vision and the outer nebulosity 
dominates with averted vision.

- by Steve Gottlieb