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Contains:  Ring nebula in Lyra, M 57, NGC 6720, IC 1296
Getting plate-solving status, please wait...
M57 - The Ring, 


            Jason Guenzel
M57 - The Ring

M57 - The Ring

Technical card

Resolution: 1200x961

Dates:June 29, 2016June 30, 2016July 2, 2016July 3, 2016July 4, 2016July 1, 2018

ZWO Blue 1.25": 25x180" -20C bin 1x1
ZWO Green 1.25": 25x180" -20C bin 1x1
Astronomik H-alpha 6nm CCD 1.25": 81x240" (gain: 139.00) -20C bin 1x1
ZWO Luminance 1.25": 130x180" -20C bin 1x1
ZWO Red 1.25": 25x180" -20C bin 1x1

Integration: 15.7 hours

Darks: ~50

Flats: ~50

Bias: ~256

Avg. Moon age: 20.46 days

Avg. Moon phase: 24.63%

Bortle Dark-Sky Scale: 5.00 job: 2149310

RA center: 283.396 degrees

DEC center: 33.029 degrees

Pixel scale: 0.757 arcsec/pixel

Orientation: 272.632 degrees

Field radius: 0.162 degrees

Data source: Backyard


Most estimates agree that the Ring Nebula has been expanding for less than 2000 years. At its current rate, it expands at about one arc-second per century. The ring is a bipolar planetary nebula which is viewed about 30 degrees off-axis from Earth. This is gives us a slightly oblique view and an oval appearance. These emission nebula shells and central white dwarf are all that remain of a once-massive red giant star. This is probably the closest example of the ultimate fate of our sun.

This is a rework of a previous image. In fact, I took the processed LRGB final from two years ago and layered on the hydrogen alpha data captured this year to fill in the outer halo shells of the nebula. This is also my first image I can think of where I did final adjustments on a different screen, so we’ll see if I need to revisit it once I see it on my normal monitor.




Jason Guenzel


  • M57 - The Ring, 


            Jason Guenzel
  • Final
    M57 - The Ring, 


            Jason Guenzel


Color balance adjustment

Sky plot

Sky plot


M57 - The Ring, 


            Jason Guenzel