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.

sgl_imaging_challenge_banner_solar_25_winners.thumb.jpg.fe4e711c64054f3c9486c752d0bcd6f2.jpg

Recommended Posts

Posted (edited)

TOA 130 with ASI 1600.  

Red: 87 300sec

Green: 84 300 sec

Blue: 66 300 sec

S Lum all RGB subs

Despite having almost 20 hours of data, this one gave me significant trouble.  Noise wasn't too bad, but chroma gradients were off the charts.  I guess I shouldn't be too surprised, as this target never rose more than about 21degrees and conditions were pretty soupy on a couple nights.  It always confounds me when the stacks look great individually--with strong signal and prominent structures but upon channel combination, certain stacks fade out--sometimes all but disappearing.  Anyway--The nebula itself is starting to reveal a depth in the structure--but the background is not great.  I did what I could to quell the colorful splotches.  LP I guess--and maybe haze as well.  The FWHM is quite high as seeing was bad, and there was significant moisture in the air.  But all in all--There has been quit a swing in my mood-upon channel combination I was really quite sure this would be doomed data--with not much chance of anything decent.  Now I feel there is hope.  I used every sub in this image--maybe if I pick and choose a bit more and throw out the worst of the lot--it will help.

Rodd

Vlaiv would say I should bin--and he's probably right.  I'll give it a try

SLRGB-4c2stars4-DS-2.thumb.jpg.5bc4b0f1468a8f0bdd27463182561d58.jpg

 

 

Edited by Rodd
  • Like 7

Share this post


Link to post
Share on other sites

Even with the obstacles, you ended with a fine image.

 

Share this post


Link to post
Share on other sites
1 minute ago, MarsG76 said:

Even with the obstacles, you ended with a fine image.

 

Thanks Mars.  I can't wait to image at zenith!

Rodd

Share this post


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

Thanks Mars.  I can't wait to image at zenith!

Rodd

That might introduce other obstacles.. ie the meridian flip.... 

Share this post


Link to post
Share on other sites
28 minutes ago, MarsG76 said:

That might introduce other obstacles.. ie the meridian flip.... 

I was just thinking the same thing. But a flip is just an inconvenience.  Low targets and bad skies are detrimental

Rodd

Share this post


Link to post
Share on other sites
Just now, Rodd said:

I was just thinking the same thing. But a flip is just an inconvenience.  Low targets and bad skies are detrimental

Rodd

Absolutely... and I deal with meridian flips frequently.... if your mount is like a CGEM, you can track about 15 degrees past the meridian before needing the flip or what I do often is wait until the object to image is about 15 degree before hitting the meridian and than start imaging toward the east for the rest of the night if need be... but the only difficulty I find is using a OAG with the guide star... always have to manually find a new guide star after a flip and sometimes that's not possible at high focal lengths, so than I have to settle to imaging only upto or from just before the meridian flip... 

Share this post


Link to post
Share on other sites
36 minutes ago, MarsG76 said:

Absolutely... and I deal with meridian flips frequently.... if your mount is like a CGEM, you can track about 15 degrees past the meridian before needing the flip or what I do often is wait until the object to image is about 15 degree before hitting the meridian and than start imaging toward the east for the rest of the night if need be... but the only difficulty I find is using a OAG with the guide star... always have to manually find a new guide star after a flip and sometimes that's not possible at high focal lengths, so than I have to settle to imaging only upto or from just before the meridian flip... 

I am lucky with the Mach 1.  I can image until the camera hits the tripod. If the target is low like m20 I image all night without flipping so the scope is below the counterweights.  That is one advantage of a pier.  A smaller profile

Rodd

Share this post


Link to post
Share on other sites
Just now, Rodd said:

I am lucky with the Mach 1.  I can image until the camera hits the tripod. If the target is low like m20 I image all night without flipping so the scope is below the counterweights.  That is one advantage of a pier.  A smaller profile

Rodd

Yeah I hear you... but the stop is programmed into the CGEM head so it wont go past 15 degrees...

Share this post


Link to post
Share on other sites
Posted (edited)

I picked through the subs a bit--threw away the worst and processed more gently.  A bit less cartoonish--but still plasticky.

 

Rodd

B-ds.thumb.jpg.31f7734953b8868b4bd356dedbee920f.jpg

 

 

 

 

Edited by Rodd
  • 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.

×
×
  • Create New...

Important Information

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