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.

stargazine_ep21_banner.thumb.jpg.d744e66b98367f1c5d57b7966c303f1b.jpg

alan4908

M51 and fuzzies

Recommended Posts

Yet another attempt at the Whirlpool galaxy (M51).

This time, I decided to try to maximize detail by collecting a large quantity of Luminescence data and then applying strong deconvolution to the areas of high signal to noise.  I also decided to try out Mure denoise, a Pixinsight routine that reduces camera noise.  The final result of this LRGB processing approach is shown below and represents just over 17 hours integration time. 

I hadn't noticed before the rather strangely shaped fuzzies in the backgroud - have a look at the annotated version for IC4278 and the triangular shaped galaxy PC2292105. 

Alan

LIGHTS: L:46, R:20, G:23, B: 15 x 600s; DARKS:30, BIAS:100, FLATS:40 all at -20C. 

508652824_23.final.thumb.jpg.e000f979f3d12be095ba6d763ff58cbc.jpg

 

23_final_Annotated.thumb.jpg.fe9a72b54531353b116a79b465821630.jpg

  • Like 29

Share this post


Link to post
Share on other sites

This is amazing, I'm no expert but I've seen plenty of images of M51 and in my opinion this is one of the best.

Share this post


Link to post
Share on other sites

Definitely a keeper! Nicely judged colours and so much detail.

Paul

Share this post


Link to post
Share on other sites
Guest

Fantastic image!  What is the galaxy at the 10:30 position from NGC5195?

Edited by Guest

Share this post


Link to post
Share on other sites

Very accomplished image Alan - from acquisition through to fine processing.  Tight stars, fine detail of the spiralling HII regions in the arms - top notch.  Well done.

Share this post


Link to post
Share on other sites

Thanks for all your comments, they are very much appreciated !:hello:

11 hours ago, Sland said:

What is the galaxy at the 10:30 position from NGC5195?

Well, according to the free software Aladin tool, which gives you the option of searching NED (Nasa  Extragalactic Database) - it is IC4277.  

Alan 

 

Share this post


Link to post
Share on other sites
Guest
12 hours ago, alan4908 said:

Thanks for all your comments, they are very much appreciated !:hello:

Well, according to the free software Aladin tool, which gives you the option of searching NED (Nasa  Extragalactic Database) - it is IC4277.  

Alan 

 

Thank you, hadn't heard of Aladin before, downloading now :)

Share this post


Link to post
Share on other sites

Superb, so much detail and vibrant colour, really great  to see what the Esprit 150 can do, and this is from your UK location?

Share this post


Link to post
Share on other sites
1 hour ago, Knight of Clear Skies said:

Amazing detail running all the way to the core.

Thanks - :hello:

4 minutes ago, tomato said:

Superb, so much detail and vibrant colour, really great  to see what the Esprit 150 can do, and this is from your UK location?

Thanks for the comment - yes the Esprit 150 is delivering the goods once more and yes, this is from my site in the UK, East Sussex. 

Alan

  • Like 1

Share this post


Link to post
Share on other sites
1 minute ago, alan4908 said:

Thanks - :hello:

Thanks for the comment - yes the Esprit 150 is delivering the goods once more and yes, this is from my site in the UK, East Sussex. 

Alan

Thanks for confirming this, there is still hope for UK imaging...

Share this post


Link to post
Share on other sites
51 minutes ago, tomato said:

Thanks for confirming this, there is still hope for UK imaging...

Yes indeed  :happy11: - what I think helps is that my obsey is located at quite a dark (ish) site which also seems to have relatively good seeing conditions.  

Alan 

Share this post


Link to post
Share on other sites

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

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By chriscoles
      Hi, I have taken mono LRGB images of M51 with my new ASI1600mm-PRO.
      I have a mix of 30s, 60s, 120s subs. 100 darks, and 100 flats for each filter. About 4 hours total.
      I Used DSS for alignment and stacking, then Pixinsight for LRGB combination.
      My issue is that i'm not happy with the colours, the stars all appear white and the background is strange.
      I have attached the Aligned LRGB images.
      Can anyone point me in the right direction? Thanks!

      Green.TIF red.TIF Lum.TIF B.TIF
    • By EyeGuy
      This is from a couple of nights ago.
      It clouded in quickly, so I didn't get much data. The temp was 2C, and I'm self-isolating - so that was also a factor! I only took 5 darks before I gave up and went to bed. I'll take more when the temp is right.
      This is 140 min integration time on a new Canon EOS Ra with 17x500s exposures, and no filter (from the city).
      Processed in PI and Photoshop - I should have used more star masks but the data aren't good enough to warrant the effort I think. I also had difficulty with flats - I tried a range of exposures with a Gerd Neumann panel, but I think they were all too short. Will go longer than 0.3s next time - very hard to figure out flat exposure on DSLRs, and APT's tool doesn't work for DSLRs yet.
      I think I'm obsessed with M51 - and I know I'll be back to it again.
      Stay safe everyone,
      Barry
       


    • By knobby
      First attempt at any DSO other than the brighter stuff like M42 or Andromeda.
      Learning to use the AZ-Gti /Sharpcap polar align / windows synscan app / APT platesolving ... And guiding ! all in one night ?
      all went well so had a quick 30 mins on M51 (first time I'd ever managed to actually frame it ... Plate solving is amazing)
      90 second subs gain 420 and 5 darks and synthetic flat for dust bunnies / gradients
      Wish I'd have gone longer now as tried a 5 minute sub once guiding was working which looked good .
      Very noisy but only 30 mins .

    • By alan4908
      I decided to try to maximize detail by collecting a large quantity of Luminescence data and then applying strong deconvolution to the areas of high signal to noise.  I also decided to try out Mure denoise, a Pixinsight routine that reduces camera noise.  The final result is an LRGB and represents just over 17 hours integration time. 
      I hadn't noticed before the rather strangely shaped fuzzies in the backgroud - have a look at the annotated version for IC4278 and the triangular shaped galaxy PC2292105. 
    • By ollypenrice
      Hi All, once again it's been a great pleasure to share this passion with SGL friends so I'd like to say a small thanks to everyone by posting a link to some data we shot here this year. It's all yours to have a play with - just try not to show me up! 
      It's from the TEC140 Triplet Apo/Mesu 200/Atik 460 mono rig working at about 0.9 arcseconds per pixel, cropped to reduce file sizes and aligned to fit together in Registar. You'll find LRGB and Ha in the link, though the Ha is a bit of a token gesture at 2X40 minutes. However, I found I could use it to give a hint of the star forming regions.  There are no short subs for the central core but I found I could use the RGB layer as a substitute since the core was quite subdued in that set.
      I hope this Dropbox link will work for you. 
      https://www.dropbox.com/sh/pxrxxtkr6khwvsf/AADNDoXJZh4t7zjI3LdIirjea?dl=0
      Have a great Christmas wherever you are and let's look forward to all those incoming photons in 2019...
      Olly
×
×
  • Create New...

Important Information

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