Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

glowingturnip

Lagoon Nebula (M8) - modded DSLR

Recommended Posts

Slowly working through my summer crop of data - here's my latest:

22224745406_789dca8fb3_c.jpg

Please click through on the image for a higher res version.

13x 300s (3 at ISO1600, 9 at ISO800), darks, flats and bias, kit as per sig, DSLR at prime focus, Pixinsight.

Conditions weren't ideal hence I only got 13 subs - there were a few scattered fluffy clouds around, though it was clear in between so obvious which subs were affected, and due to time of year and position of an annoying hillside it was setting fairly early for me.  Still, as a target it's so bright I don't think it suffered much from lack of data - actually I noticed that after the first 3 subs came in, at ISO1600, that the red channel looked like it was clipping, so dropped it to ISO800 for the rest of the run.

The Lagoon Nebula (M8, NGC 6523) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as a H II region. In the foreground is the open cluster NGC 6530.

The Lagoon Nebula is estimated to be between 4,000-6,000 light years from the Earth and measures 110 by 50 light years.

The nebula contains a number of Bok globules (dark, collapsing clouds of protostellar material), the most prominent of which have been catalogued as B88, B89 and B296. It also includes a funnel-like or tornado-like structure caused by a hot O-type star that emanates ultraviolet light, heating and ionizing gases on the surface of the nebula.

The Lagoon Nebula also contains at its centre a structure known as the Hourglass Nebula (the densest part). In 2006 the first four Herbig–Haro objects were detected within the Hourglass.

Just for a laugh, here's the same target I took last year.  I guess I'm improving !

15079032528_917dd7c84b.jpg

  • Like 10

Share this post


Link to post
Share on other sites

Fantastic image.... definitely a major improvement over the last years image... I too am a DSLR astroimager.. its amazing the kinds of images possible with DSLRs.

Share this post


Link to post
Share on other sites

I've given this one a bit of a reprocess as I wasn't happy with some of the star bloating I'd gotten,  I went through it again paying closer attention to appropriate masking and de-ringing at each step (ok, and I did a bit of a morph transform on the stars too).

I've beefed up the cloud and the colours a bit too,  hope you like.

22742269464_c5b135d29a_c.jpg

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By Kronos831
      I currently am on holiday in my father's hometown, a small island near rhodes called symi.Symj, is a pretty small town,with only about 2000 residents.That means that the light pollution levels must be low. Acknowledging that, i called my friends, grabbed my 10x50 bins(that i got for 20€ from Turkey),and went on my way to find a dark site.About after 20 mins of walking (from the city),i stumbled upon a beach, it was dark, so i went in.There i decided to lay on a sunbed that was there.After looking up(not being dark adapted, my friends just kept turning their flashlights on for some reason), i saw the haze of the milky way stretching from Cassiopeia to cygnus and beyond!I was amazed as i ve never seen the milky way before and smudged it off as clouds until i confirmed it was the milky way from an app! The weird part was that at just straight overhead, was the port ,which had many lights, and as a result the sky appeared half bright and half dark. I turned over at Sagittarius and headed over the lagoon nebula. Brilliant! 3-4 stars in a line surrounded by bright nebulosity.(while still being in the haze!) Afterwards i headed to cygnus,it was a real light show! I saw the milky way layering on top of Cygnus while catching a glimpse of m23 and yet again, failing to see NGC7000 . Then, with the corner of my eye, i detected something moving, then turned over to Cassiopeia to see a shooting stsr!(it was my first time seeing one!!!) Was very brief, yet enjoyable. Right afterwards i turned over at the Perseus double cluster.Magnificent! Appeared as 2 small balls of light , almost connected yo eachother. Finally, i realised that finally, the target i was seeking to observe all year long, M31 was into the area with the light pollution! What a shame! While also being low on the Horizon, I couldnt see it with the naked eye. I observed it with ny binoculars for 10 minutes or so . The core was resolved nicely with some hints of outer nebulosity. Overall a great night and now, i wished i had my 8" dob with me....
      (Sorry for any granmar mistakes, im currently typing this at 2 am xD)
    • By MarsG76
      The Lagoon Nebula (Messier 8, M8 or NGC 6523) is a emission nebula in the constellation Sagittarius, and is estimated to be between 4,000-6,000 light-years from the Earth. This image was taken with a full spectrum modded DSLR through a 80mm refractor for a total exposure time of 1002 minutes through SII, HAlpha and OIII filters.
    • By MarsG76
      Hello Astronomers,
      As I'm still slowly processing my remaining data captured earlier this year, now I'm sharing with you my image of the Lagoon Nebula exposed in narrowband Hubble palette.
      To me, the shape of M8 in narrowband resembles the map of Australia...
      This image was also in the group of captures in exposing the Prawn, Lagoon and Swan nebulae on the night of 5/6 July in OSC natural color. As with the Prawn and Swan nebulae, I decided to spend a few nights capturing SII, HAlpha and OIII data of M8 also, spending 1/3rd of the night imaging time on each of the objects, this way I ended up with data of all three at the end of the imaging sessions.
      This image was exposed through my Bosma 80mm refractor and the full spectrum modded Canon 40D on nights from 6th till 19th July 2019.
      The total exposure for all three channels of this image was 1002 minutes.
      Thanks for looking, Clear skies
      Mariusz

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.