PK 198-6.1 (Abell 12) Planetary Nebula in Orion

Located at: RA 06 hours 02 minutes 20 seconds, Dec +09 degrees 39 minutes 15 seconds

Size: 37" Magnitude: 13.9 photographic Class: -- (4?)

North is up

West to the right


 14.5" f5 Newtonian reflector


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


Lumicon Red filter, 670 minutes (67 x 10 minute subs), 02/9/10/11/2016; seeing 2.9-6.5 per CCDStack


CCDStack 2.90.5589.16047, Photoshop CS5.1


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


This nice planetary in Orion has an obvious challenge for imaging (and visual detection) ... the bright star is magnitude 4.1 Mu (61 Ori), only about 50 arc seconds away. A narrowband filter would work much better than my (broadband) red filter ... both reducing the stars' brightness, and enhancing the planetary. In processing this image, I had to reduce the 'glow' around the star, while trying to keep the planetary as a separate object. The interior detail (?) in the planetary is probably just the random filigree 'pattern' seen around the rest of the star.

Still dealing with the mostly clear and warm, but breezy to windy, "winter" conditions here in Southern California. Seeing has been mostly poor, so this is the first of four planetaries I imaged in the south before the moon moved in.

View 200% crop.

See the CDS image/data. Check out the differences in this planetary in the F, J, and N images.