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

NGC-2359 Thors Helmet in HOO

  • Please log in to reply
3 replies to this topic

#1 rkinnett

rkinnett

    Viking 1

  • *****
  • topic starter
  • Posts: 718
  • Joined: 08 Aug 2018
  • Loc: La Crescenta, CA

Posted 20 January 2021 - 02:30 PM

This HOO composition combines 2 hours integration in Ha (12x 600s) with 3 hours in O-III (18x 600s). 

 

Captured with C9.25 on an EQ6R, with f/6.3 reducer, off-axis guider, and asi1600mm.

 

Seeing was better than average, and guiding was better than expected for a somewhat low-elevation target (36 deg at meridian), averaging ~0.7" RMS per axis.

 

This version is preliminary.  I am very slowly learning how to use PixInsight, and it's grueling work.  For this preliminary version, I stacked, pre-processed, and combined in PI, then stretched and sharpened in Photoshop.  I'm still working through tutorials for non-linear processing in PI and I expect that to do a much finer job with noise control and sharpening.  Also experimenting with Starnet.

 

The attached copy is reduced to 25% and compressed for CN.

 

Full-res here:  https://www.astrobin.com/slkdxu/D/

 

Thanks for looking smile.gif

Attached Thumbnails

  • ngc2359_thors_helmet_reduced.jpg

Edited by rkinnett, 20 January 2021 - 02:32 PM.

  • Scott Mitchell, elmiko, ntph and 12 others like this

#2 Mert

Mert

    Fly Me to the Moon

  • *****
  • Posts: 7,439
  • Joined: 31 Aug 2005
  • Loc: Spain, Pamplona

Posted 21 January 2021 - 08:14 AM

That's a great image, very well processed and captured, great detail there :waytogo:

Edited by Mert, 21 January 2021 - 08:14 AM.

  • rkinnett likes this

#3 Tapio

Tapio

    Soyuz

  • -----
  • Posts: 3,872
  • Joined: 24 Sep 2006
  • Loc: Tampere, Finland

Posted 21 January 2021 - 08:25 AM

I think you should experiment more with Starnet as stars look kind of strange (small stars look like single color dots).

And there are halos around brighter stars.


  • rkinnett likes this

#4 rkinnett

rkinnett

    Viking 1

  • *****
  • topic starter
  • Posts: 718
  • Joined: 08 Aug 2018
  • Loc: La Crescenta, CA

Posted 21 January 2021 - 07:32 PM

Thanks Mert!

 

 

I think you should experiment more with Starnet as stars look kind of strange (small stars look like single color dots).

And there are halos around brighter stars.

Agreed.  Thanks!




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