GUM Nebula: In the southern constellations of Vela and Puppis a very large nebula complex can be found, named after the Australian astromomer Colin Stanley Gum, the origin of which is believed to be a Super Nova explosion approx. one million years ago. Embedded in this vast complex is the Vela Super Nova Remnant from another explosion not so long ago.
This wide field image covers the central part of the complex with the Vela SNR visible in the upper central part of the photograph. The round emission nebula at the left hand edge of the image is GUM 14 (RCW 27) and the brighter smaller one nearby is GUM 17 (RCW 33). In the right lower corner a small nebula is visible, which is called the Pencil Nebula and the bright nebula close to it is GUM 23 (RCW 38).

For a higher resolved image of the Vela SNR see here.

The image was selected "Astrophoto of the Week" by

Object GUM Nebula
Category Super Nova Remnants
Designation GUM Nebula
Constellation Vela
Optics Asahi Takumar 135 mm f/3.5 @ f/4.5
Mount Astro-Physics 900 GTO
Camera QHY8/ALccd 6c
Exposure 19 x 10min Astronomik Ha filter, 19 x 10min Astronomik (OIII) filter, Maxim DL for image acquisition
Calibration No
Guiding Meade DSI Pro II and LX 200 f/5 as Guide Scope, Guiding Software: Maxim DL
Processing ImagesPlus, Photoshop
Location-Date Somerset West, South Africa - 14+29 Dec 2007+2 Mar 2008
Remark The very dense star field has been attenuated to highlight the nebula structures
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