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

Technical card

Imaging telescopes or lenses: Explore Scientific 152 mm Carbon Fiber

Imaging cameras: ZWO ASI1600MM-PRO

Mounts: Astro-Physics Mach 1 GTO

Guiding telescopes or lenses: Orion 80mm Short Tube

Guiding cameras: Starlight Xpress Lodestar x2

Software: PHD2  ·  Sequence Generator Pro  ·  PixInsight  ·  Stellarium  ·  Photoshop CS5  ·  SkySafari Pro

Filters: Astrodon Ha 5nm  ·  Astrodon Lum Tru-Balance E-Series Gen 2  ·  Astrodon Green Tru-Balance E-Series Gen 2  ·  Astrodon Blue Tru-Balance E-Series Gen 2  ·  Astrodon Red Tru-Balance E-Series Gen 2  ·  Astrodon OIII 3nm

Accessory: ZWO 8x 1.25" Filter Wheel (EFW)  ·  QHYCCD PoleMaster  ·  Hotech 2" SCA Self-Centering Field Flattener  ·  MoonLite CFL 2.5" Large Format Focuser


Dates:Aug. 2, 2017Aug. 5, 2017May 19, 2019May 24, 2019June 21, 2019June 23, 2019

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 30x60" (gain: 0.00) -20C bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 30x60" (gain: 0.00) -20C bin 1x1
Astrodon Ha 5nm: 28x120" (gain: 139.00) -20C bin 1x1
Astrodon Ha 5nm: 154x120" (gain: 200.00) -20C bin 1x1
Astrodon Lum Tru-Balance E-Series Gen 2: 173x60" (gain: 0.00) -20C bin 1x1
Astrodon OIII 3nm: 40x120" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 131x120" (gain: 200.00) -20C bin 1x1
Astrodon Red Tru-Balance E-Series Gen 2: 30x60" (gain: 0.00) -20C bin 1x1

Integration: 16.1 hours

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: 18h 53' 35"

DEC center: +33° 1' 37"

Pixel scale: 0.648 arcsec/pixel

Orientation: 129.504 degrees

Field radius: 0.287 degrees


Resolution: 2609x1842

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