Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

B33 The Horsehead Nebula

  • Please log in to reply
7 replies to this topic

#1 sink45ny

sink45ny

    Vanguard

  • *****
  • topic starter
  • Posts: 2003
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 09 November 2019 - 02:46 AM

8 X 1200 of Ha

 

Not much choice of targets on a bright moonlit night.

 

integration ABE

 

get.jpg?insecure


Edited by sink45ny, 09 November 2019 - 03:10 AM.

  • starcam, John Rogers, okiestarman56 and 8 others like this

#2 sink45ny

sink45ny

    Vanguard

  • *****
  • topic starter
  • Posts: 2003
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 09 November 2019 - 02:58 AM

Please critique my PI work flow for this image.

 

Manual calibration

MureDenoise

ABE

ACDNR

HistogramTransformation

Deconvolution

 

Thanks!!


Edited by sink45ny, 09 November 2019 - 02:59 AM.

  • retroman2 likes this

#3 Neptune

Neptune

    Apollo

  • *****
  • Posts: 1196
  • Joined: 16 Apr 2007
  • Loc: Georgia

Posted 09 November 2019 - 08:52 AM

Comming from the age of film, I always find these images unbelievable given the size of the instrument used.  Nice job.


  • sink45ny likes this

#4 elmiko

elmiko

    Soyuz

  • -----
  • Posts: 3515
  • Joined: 27 Jul 2009
  • Loc: Arizona

Posted 09 November 2019 - 09:16 AM

Excellent details and contrast Steve! As far as your processing, seems to be great. The results speak for themselves!


  • sink45ny likes this

#5 sink45ny

sink45ny

    Vanguard

  • *****
  • topic starter
  • Posts: 2003
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 09 November 2019 - 10:05 AM

Excellent details and contrast Steve! As far as your processing, seems to be great. The results speak for themselves!

Thanks Mike!! I was wondering if anyone else had other means of bring out more in a mono image before tackling the more complex nature of color.



#6 gunny01

gunny01

    Surveyor 1

  • *****
  • Posts: 1862
  • Joined: 02 Jun 2014

Posted 09 November 2019 - 11:13 AM

Please critique my PI work flow for this image.

 

Manual calibration

MureDenoise

ABE

ACDNR

HistogramTransformation

Deconvolution

 

Thanks!!

  I always do a comparison of abe and dbe (where I select the points).  In most cases, dbe does the best on removing gradients.  I don't use acdnr, but go with mltnr and tvgdn for noise.  There's a lot of nebulosity under the horse that can be brought out.


  • sink45ny and PhotonHunter1 like this

#7 Pete_xl

Pete_xl

    Viking 1

  • -----
  • Posts: 782
  • Joined: 29 Jan 2015
  • Loc: Germany

Posted 09 November 2019 - 12:50 PM

Please critique my PI work flow for this image.

 

Manual calibration

MureDenoise

ABE

ACDNR

HistogramTransformation

Deconvolution

 

Thanks!!

Nice Horsehead!

 

You ask for critique of your workflow. I do not use PI so my (minor) points of critique can only refer to the processing result in total.

 

The overall impression is nice and clean. Viewed in full resolution the image appears a little soft. I think that with the given high end imaging setup there should be more detail to reveal in the horsehead itself and the nebulosity in its background. Also the stars look a bit soft. Maybe the noise reduction was a bit too much and maybe the sharpening functions have more unused potential.

 

A few more minor points....there are (4?) long dark horizontal lines visible in the full resolution on astrobin left of the horsehead. In the lower left corner there is a strange dark gradient. And in the Astrobin full version there seems to have slipped in a bright star that does not belong there ( in the breast region of the horse).

 

Pete


Edited by Pete_xl, 09 November 2019 - 12:59 PM.


#8 sink45ny

sink45ny

    Vanguard

  • *****
  • topic starter
  • Posts: 2003
  • Joined: 08 May 2014
  • Loc: Pennsyltucky

Posted 09 November 2019 - 01:45 PM



  I always do a comparison of abe and dbe (where I select the points).  In most cases, dbe does the best on removing gradients.  I don't use acdnr, but go with mltnr and tvgdn for noise.  There's a lot of nebulosity under the horse that can be brought out.

I took your advice and reprocessed using DBE, here is the result...

 

get.jpg?insecure

 

 

 

and here's the original for comparison.

get.jpg?insecure

 

 

It looks better to me.


Edited by sink45ny, 09 November 2019 - 01:47 PM.

  • elmiko, Dereksc and gunny01 like this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics