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Contains:  IC 1296, M 57, NGC 6720, Ring Nebula
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M57 - Ring nebula in Lyra, 



    
        

            rhedden
M57 - Ring nebula in Lyra
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M57 - Ring nebula in Lyra

Technical card


Dates:June 11, 2020June 13, 2020June 15, 2020June 16, 2020June 17, 2020

Frames:
Astrodon 31mm LRGB E Series Gen 2 1.25": 2x360" -18C bin 1x1
Astrodon 31mm LRGB E Series Gen 2 1.25": 14x480" -18C bin 1x1
Astrodon 31mm LRGB E Series Gen 2 1.25": 23x600" -18C bin 1x1
Orion Extra Narrowband Filter Ha 1.25": 28x1200" -18C bin 1x1
Orion Extra Narrowband Filter Ha 1.25": 12x600" -18C bin 1x1

Integration: 17.2 hours

Avg. Moon age: 23.60 days

Avg. Moon phase: 35.83%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 3623224

RA center: 18h 53' 35"

DEC center: +33° 1' 33"

Pixel scale: 0.464 arcsec/pixel

Orientation: 0.133 degrees

Field radius: 0.252 degrees


Resolution: 2724x2811

Locations: Back Yard - New York, Pittstown, NY, United States

Data source: Backyard

Description

This image is comprised of 17.4 hours of integration time from my Bortle 5 back yard. 11.5 hours integration was devoted to Hydrogen-alpha to image the halo, while the rest was RGB exposures. The image is actually a 3-panel mosaic, with 85 % overlap of panels, just to make the image approximately square.

The sky background, the galaxy IC 1296, and the core of the nebula were processed in RGB mode with synthetic luminance made from RGB subs. The halo and the star shapes (and star colors) were all derived from H-alpha (as luminance) with HGB for color channels.

It is rare that I can get 17 hours of integration on any object here in upstate NY, but there was an exceptional run of clear nights, and I was able to leave my imaging equipment outside without fear of rain for one week. It was great to image for so many nights in a row without setting up and aligning the 'scope every time.

The "A" revision is for those who like brighter / more saturated colors.

Comments

Author

rhedden
rhedden
License: None (All rights reserved)
3512
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Revisions

  • M57 - Ring nebula in Lyra, 



    
        

            rhedden
    Original
  • Final
    M57 - Ring nebula in Lyra, 



    
        

            rhedden
    C

Sky plot

Sky plot

Histogram

M57 - Ring nebula in Lyra, 



    
        

            rhedden