M27: The Dumbell

The Dumbell is a planetary nebula in the constellation of Vulpecula (the Little Fox).

The star in the center is quickly spitting out its atmosphere into space. Quite soon it will become a white dwarf (a dead star).

Images taken: Nov. 13, 2006, by Justin Livingstone and Susie Penman.

Telescope: Meade 12 in at f/6.55 (f=2m).

Size of the image: 20'x30'

Camera: SBIG ST-10 CCD

Seeing: 3.5 as.

Exposures: 6 x 10 min (2 red, 3 green, 3 blue).


Images taken: Oct. 28, 2004, by Rebecca Morrison and Dru Ashoo.

Telescope: Meade 12 in with f/4.6 focal reducer (f=56in), guided with AO7 adaptive optics.

Size of the image: 12'x16'

Camera: SBIG ST-7 CCD

Seeing: 4.5 as.

Exposures: 6 x 5 min (1 clear, 1 red, 1 green, 2 blue) with high resolution (no binning).


Images taken: June 20, 2003, in hazy weather.

Telescope: Meade 12 in with f/4 focal reducer (f=48in).

Size of the images: 15'x20'

Camera: SBIG ST-7 CCD

Seeing: 7 as.

Exposures: 10x10 sec (red), 10x10 sec (green), 10x10 sec (blue) track and accumulate with high resolution (no binning).


Images taken: Oct. 8, 2003 at full Moon.

Students: Jillian Hamam and Kristen Harrison

Telescope: Meade 12 in with f/4 focal reducer (f=48in).

Size of the images: 15'x20'

Camera: SBIG ST-7 CCD

Seeing: 5 as.

Transparency (extinction): +0.1 mg.

Background: 16.7 mg/as^2.

Altitude: 49 deg.

Exposures: 15 sec (red), 15 sec (green), 5x15 sec (blue) and 5x15 sec (clear for luminance) at medium resolution (2x2 binning).

Image processing: CCDoops + Photoshop Elements.