Gum 15

60%  resolution (2.2MB)

DSLR wide-field image

Object data of Gum15

Object type: Emission nebula
Size: 27'
Magnitude: -
Constellation: Vel
Distance: 3,000 Ly
Notes: Gum 15 is a HII region in the constellation Vela. In HII regions the ionizing photons come from the young hot stars within the region, and Gum 15 is no exception. At the center of this image you can see one of the culprits: the star HD 74804, the brightest member of a cluster of stars known as Collinder 197.

Exposure data

Date: 2014-02-25 + 2014-02-26 + 2014-03-01
Location: Hacienda Los Andes / Chile (1100m)
Telescope: Astro-Physics 175mm f/8 Starfire EDF with f/8.3 CCD field flattener
Camera: FLI PL29050 with Astrodon filters
Binning: L 1x1 / RGB 1x1
Mount: Astro-Physics AP1200GTO
Exposure time: L 24x8min / R 8x8min / G 8x8min / B 8x8min
Exposure time total: 6h24min
Notes: Image acquisition by CEDIC team (Christoph Kaltseis, Bernhard Hubl, Wolfgang Leitner and Herbert Walter)

Image processing by Christoph Kaltseis