Hemisphere:  Northern  ·  Constellation: Lyra (Lyr)  ·  Contains:  IC 1296  ·  M 57  ·  NGC 6720  ·  Ring nebula in Lyra
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M57 • Ring Nebula in HaOIIILRGB, 



    
        

            Douglas J Struble
M57 • Ring Nebula in HaOIIILRGB
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M57 • Ring Nebula in HaOIIILRGB

Getting plate-solving status, please wait...
M57 • Ring Nebula in HaOIIILRGB, 



    
        

            Douglas J Struble
M57 • Ring Nebula in HaOIIILRGB
Powered byPixInsight

M57 • Ring Nebula in HaOIIILRGB

Acquisition details

Dates:
Aug. 2, 2017 ·  Aug. 5, 2017 ·  May 19, 2019 ·  May 24, 2019 ·  June 21, 2019 ·  June 23, 2019
Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 30×60(30′) (gain: 0.00) -20°C bin 1×1
Astrodon Green Tru-Balance E-Series Gen 2: 30×60(30′) (gain: 0.00) -20°C bin 1×1
Astrodon Ha 5nm: 28×120(56′) (gain: 139.00) -20°C bin 1×1
Astrodon Ha 5nm: 154×120(5h 8′) (gain: 200.00) -20°C bin 1×1
Astrodon Lum Tru-Balance E-Series Gen 2: 173×60(2h 53′) (gain: 0.00) -20°C bin 1×1
Astrodon OIII 3nm: 40×120(1h 20′) (gain: 139.00) -20°C bin 1×1
Astrodon OIII 3nm: 131×120(4h 22′) (gain: 200.00) -20°C bin 1×1
Astrodon Red Tru-Balance E-Series Gen 2: 30×60(30′) (gain: 0.00) -20°C bin 1×1
Integration:
16h 9′
Darks:
50
Flats:
50
Bias:
250
Avg. Moon age:
16.22 days
Avg. Moon phase:
82.07%
Bortle Dark-Sky Scale:
6.00

Basic astrometry details

Astrometry.net job: 3251691

RA center: 18h53m35s.5

DEC center: +33°0137

Pixel scale: 0.648 arcsec/pixel

Orientation: 129.504 degrees

Field radius: 0.287 degrees

Resolution: 2609x1842

File size: 5.6 MB

Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard

Description

The Ring Nebula, M57, discovered by the French astronomer Charles Messier while searching for comets in late January 1779, is a planetary nebula in the northern constellation of Lyra. Such objects are formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf. M57 is 2,300 light-years from Earth. Photographs taken over a period of 50 years show the rate of nebula expansion is roughly 1 arcsecond per century. The interior parts of this nebula have a blue-green tinge that is caused by doubly ionized oxygen.

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M57 • Ring Nebula in HaOIIILRGB, 



    
        

            Douglas J Struble