Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 17  ·  NGC 6618  ·  Omega nebula
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Swan Nebula, 



    
        

            Charles Ward
Swan Nebula
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Swan Nebula

Getting plate-solving status, please wait...
Swan Nebula, 



    
        

            Charles Ward
Swan Nebula
Powered byPixInsight

Swan Nebula

Equipment

Imaging Telescopes Or Lenses
Orion 8" f/3.9 Newtonian Astrograph
Imaging Cameras
QSI 683 wsg-8
Mounts
AVX
Filters
Orion SkyGlow 2" Imaging Filter
Accessories
MPCC
Software
PixInsight

Acquisition details

Dates:
June 21, 2014
Frames:
Integration:
1h 18'
Avg. Moon age:
23.92 days
Avg. Moon phase:
31.64%

Basic astrometry details

Astrometry.net job: 304880

RA center: 18h20m53s.10

DEC center: -16°0849

Pixel scale: 2.764 arcsec/pixel

Orientation: 1.710 degrees

Field radius: 0.793 degrees

Resolution: 1647x1246

Description

One of my favorite nebulae. This thing is so bright I could see it pretty clearly in a 2 second exposure in the autoguider. Actually, the main difficulty in processing it is that the core is so bright it's hard to pull out the outer regions without killing the detail in the center. I approached it by using masked stretches (manually, not the masked stretch tool in PI) with progressively larger, fuzzy selections.

I didn't make any comparable measurements, but I think transparency was quite exceptional for the site. Seeing seemed pretty good as well.

Comments

Revisions

  • Final
    Swan Nebula, 



    
        

            Charles Ward
    Original
  • Swan Nebula, 



    
        

            Charles Ward
    B
  • Swan Nebula, 



    
        

            Charles Ward
    C
  • Swan Nebula, 



    
        

            Charles Ward
    D

Sky plot

Sky plot

Histogram

Swan Nebula, 



    
        

            Charles Ward