Gum 15 Nebula in Vela

About 3000 light-years away from our own milky-way,this combination of reflection- and emission-nebula can be found in the constellation of Vela as a 30 arc-mintues measuring nearly round object,labeled Gum15.

The bright center-star is a double one:HD 74804,which itself is a member of the star-cluster Collinder 197.Gum15 contains not only star-formation regions with strong red Ha-emissions,but  also fine wisps of blue reflection-nebula.In some respect it resembles the famous Trifid-Nebula in Sagittarius (M20).


position (epoch 2000):

Ra.: 08h 43m 52.5s
Decl.: −41° 14′ 39″


image data:

L(R+Ha)GB image from:

L = 15 x 1200s

RGB= 6 x 1200s each

Ha = 8 x 2400s

a total of 16.33 hours

80cm f/7 AstroOptik Keller corrected cassegrain

FLI Proline 16803 Astrodon LRGB GenII filters

Prompt 7 CTIO/UNC Chile,remote controlled

image processing: Bernd Flach-Wilken


this 22´x 22´arc-minute large star-field in the constellation of Vela shows the bright nebula Gum15.For full resolution click HERE

another Gum 15-Nebula picture taken with ESO´s 2,2m-telescope at La Silla can be seen HERE









Last modified on Wednesday, 11 March 2020 11:32

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