M 57 (NGC 5720) Planetary Nebula in Lyra

Located at: RA 18 hours 53 minutes 35 seconds, Dec +33 degrees 01 minutes 44 seconds

Size: 1.8' x 1.4'; Magnitude: 9.7 photographic; Class: 4+3

North is up

West to the right

Telescope:

Celestron 11 operating at approximately f10

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.1

Image:

 No filter, 80 minutes (16 x 5 minute subs), 10/02/2005

Processing:

 CCDStack 1.2, Photoshop 7.0

Location:

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

Notes:

One of the few C11@ f10 images to come out half way decent. The 16 sub exposures were not well guided, but by aligning,  combining and processing, I was able to get this result. Seeing was about 3-4 arc seconds