Jump to content

stargazine_ep39_banner.thumb.jpg.b87bddaa2aded94d2a3456c0589a82b9.jpg

LBN438



LBN 438 is a dusty nebula located in the Lacerta constellation which is also known as the sand worm (from the Dune science fiction series) or the shark nebula.  It doesn’t appear very often on SGL, probably because it is so faint !

It is illuminated by interstellar radiation known as Extended Red Emission (ERE).   ERE is a relatively recent discovery (1975) and is a photo-luminescence process whereby hydrogenated amorphous carbon is illuminated by interstellar photons in the 500 to 1000nm spectral range.  Although the nebula also contains ionized hydrogen, it only emits a relatively weak Ha signal, so I decided to only use broadband filters to acquire the target.  

The LRGB image shown below was captured with my Esprit 150 and represents just over 13 hours integration time.

At the top of nebula is a reddish glow, which I presume is due to ERE.  The nebula is surrounded by very bright blue stars which can detract from the relatively faint nebula, so these have been stretched much less than the rest of the image and then blended back into the main image.  If you look closely at the background you will also be able to see various small background galaxies (eg middle left).

  • Like 3

From the album:

Deep Sky III

  • 109 images
  • 3 comments
  • 74 image comments

Photo Information for LBN438


Recommended Comments

Really nice image with strong but subtle variations in colour. Not an object I've seen before. Very interesting so thanks for sharing.

Regards George

Link to comment
1 hour ago, Hawksmoor said:

Really nice image with strong but subtle variations in colour. Not an object I've seen before. Very interesting so thanks for sharing.

Regards George

Thanks for the comment George. :hello:

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.