NGC 246

3 minutes exposure, SBIG ST-4 CCD.
300mm f/6 newtonian at prime focus.

NGC 246 is a moderately bright planetary nebula in Cetus, situated about 7 degrees north of the bright star Diphda. It is easily seen in an 8" telescope.

Combination of 5, 3 minute exposures, SBIG ST9XE CCD camera.
300mm f/6 newtonian telescope at prime focus.

In an 18 inch telescope it appears as a ghostly disc, slightly fainter in the centre, with several stars superimposed. Two of these look like eyes in the telescope.

Combination of 30, 1 minute images, SBIG STL-1001E CCD.
16" f/10 schmidt-cassegrain at prime focus.

Combination of 5, 3 minute images unfiltered.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.