PK 61+41.1(DdDm 1) Planetary Nebula in Hercules
Located at: RA 16 hours 40 minutes 18 seconds, Dec +38 degrees 42 minutes 19 seconds
Size: 1.0" Magnitude: 13.3 photographic Class: --
North is up
West to the right
14.5" f5 Newtonian reflector
ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56
Lumicon Red filter, 300 minutes (30 x 10 minute subs), 06/8/11/12/2014; seeing 2.6-3.5 FWHM per CCDStack
CCDStack 2.77.5159.19820, Photoshop CS5.1
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)
I was searching for objects to image with a high surface brightness, and
were away from the nearly full moon, and I thought I would try a couple
of small planetary nebulae in Hercules.
However, this one is too small. It appears stellar at my focal length/exposure time. See the other planetary nebula I imaged (PK 75+35.1).
The marine stratus (fog) has been very aggressive this week, and had covered me up before dark several nights on this imaging run.
View 200% crop.
See this CDS link to PK 61+41.1. Clink on "Interactive AladinLite view" to see several different survey views of PK 61+41.1.