PK 221+5.1 (Sanduleak 2-8, Mink 3-3) Planetary Nebula in Monoceros

Located at: RA 07 hours 26 minutes 34 seconds, Dec -05 degrees 21 minutes 52 seconds

Size: 12" Magnitude: 14.2 photographic Class: 4

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 (45 x 3.33 minute {200 seconds} subs), 03/16/2015; seeing 2.8-4.1 FWHM per CCDStack

Processing:

CCDStack 2.88.5547.17701, Photoshop CS5.1

Location:

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

Notes: Still trying to take advantage of the moon's absence from the southern skies. As with most of this year's rainy season, not much rain, but lots of high clouds. I found another 'one night', small planetary in Monoceros, to image in a break in the clouds (see PK 217+2.1).  This little planetary seems to have 'extensions' that are larger than its listed size (12 arc seconds), faintly seen in my image, but prominent in the Aladin previewer image. Again, see PK 217+2.1, which is listed as 15 arc seconds, with no visible 'extensions'.

View 200% crop.

See the image/data from the CDS Aladin previewer.