Author Topic: Veil Nebula Sharpening of the Nebula???  (Read 2178 times)

Offline tdgm

  • PixInsight Addict
  • ***
  • Posts: 286
    • View Profile
Veil Nebula Sharpening of the Nebula???
« on: 2016 September 12 12:09:50 »
Hello

I just finishing processing a 2 hour 5 minute (25 5 minute images) image of the Veil Nebula utilizing a TPO RC 6 and a SBIG STF 8300C (OSC). I did create a Synthetic Luminance using extract RGB channels after DBE. I am not happy that I can not get more  THINK???

Include links to original integrated fits as well as fits for final with process container of history (Zipfile). So you guys/gals can possible suggest a method to help with sharpening of the nebula.


Original integrated fits file : https://www.dropbox.com/s/hgduztrkcuja693/Veil91016.fit?dl=0

Zip File with File image and Process container: https://www.dropbox.com/s/avrnazci73g7gzj/91016Veil.zip?dl=0

Here is a quick .jpg for your review as well.


Offline Greg Schwimer

  • PixInsight Addict
  • ***
  • Posts: 210
    • View Profile
Re: Veil Nebula Sharpening of the Nebula???
« Reply #1 on: 2016 September 12 13:58:53 »
I am not happy that I can not get more  THINK???

What exactly are you trying to get more of?

I took a quick look at the data in the links. Both images appear to already be processed. Can you provide an unprocessed image so we can look at it?

It looks like you attempted MLT sharpening as the last steps in the process container. Consider deconvolution before the stretch. This should help. Be careful not to overdo it.
- Greg
Scottsdale, Arizona, USA

Offline jkmorse

  • PixInsight Padawan
  • ****
  • Posts: 926
  • Two questions, Mitch . .
    • View Profile
    • Jim Morse Astronomy
Re: Veil Nebula Sharpening of the Nebula???
« Reply #2 on: 2016 September 12 15:11:27 »
You can also use MMT , LHE and the dark structure enhancement script but as Schwim says, be gentle.  Remember, you are ultimately restricted by the resolution of your system and can't go much beyond that.
Really, are clear skies, low wind and no moon that much to ask for? 

New Mexico Skies Observatory
FLI Microline 16803
Planewave CDK17 - Paramount MEII
Planewave IFR90 - Astrodon LRGB & NB filters
SkyX - MaximDL - ACP

http://www.jimmorse-astronomy.com
http://www.astrobin.com/users/JimMorse

Offline tdgm

  • PixInsight Addict
  • ***
  • Posts: 286
    • View Profile
Re: Veil Nebula Sharpening of the Nebula???
« Reply #3 on: 2016 September 12 16:03:29 »
Schwin and JKMorse Thanks for the advice.

Schwin here is the correct link to the integrated image which only has a dynamic crop done it it. https://www.dropbox.com/s/px3jhi8jfd75z3h/Integration4DC.fit?dl=0

Keep in touch





Offline Greg Schwimer

  • PixInsight Addict
  • ***
  • Posts: 210
    • View Profile
Re: Veil Nebula Sharpening of the Nebula???
« Reply #4 on: 2016 September 12 18:03:09 »
I ran a very quick deconvolution on it after color calibration and before the stretch. It helps. Give it a try.

(Sorry I don't have a sample result to show. Kids... )

A good walk through is here:

https://www.youtube.com/watch?v=OYJ9iojI0CA
https://www.youtube.com/watch?v=TIsFDbr7bzo
- Greg
Scottsdale, Arizona, USA

Offline tdgm

  • PixInsight Addict
  • ***
  • Posts: 286
    • View Profile
Re: Veil Nebula Sharpening of the Nebula???
« Reply #5 on: 2016 September 12 20:59:11 »
Hi Schwin

I reviewed video links on DeConvolution. Lots of information to digest there but I tried to follow the best I could to make a good contrast mask for DeCon. Still need to REFINE that process and will continue to retry different numbers etc.

This is a my first attempt at deconvolution of synthetic luminance before stretching and then LRGB combination to original data with  using same non linear processing applied. Here is just a JPG for your review. I think it is better but probably could be improved even more.

Steve

Offline Greg Schwimer

  • PixInsight Addict
  • ***
  • Posts: 210
    • View Profile
Re: Veil Nebula Sharpening of the Nebula???
« Reply #6 on: 2016 September 12 21:54:42 »
Deconv is usually subtle, not a striking difference. As the David said in the presentation, the image should "snap into focus". As you proceed with processing you should be able to enhance what you have done from there.
- Greg
Scottsdale, Arizona, USA