Hemisphere:  Northern  ·  Contains:  IC 1296  ·  M 57  ·  NGC 6720  ·  Ring nebula in Lyra
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Messier 57 (Ring Nebula), 


            WJM Observatory
Messier 57 (Ring Nebula)
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Messier 57 (Ring Nebula)

Technical card

Imaging cameras: ZWO ASI071MC-Cool

Mounts: Mountain Instruments MI-250

Guiding telescopes or lenses: Meade LX200 14" ACF

Guiding cameras: Lodestar

Focal reducers: Optec Lepus 0.62x Telecompressor

Software: PixInsight  ·  Interactive Astronomy Sky Roof  ·  Interactive Astronomy Sky Alert  ·  PHD2 Guiding  ·  Sequence Generator Pro

Dates:May 25, 2017June 16, 2017June 17, 2017June 20, 2017June 21, 2017June 22, 2017

74x120" (gain: 0.00) -10C
76x60" (gain: 0.00) -10C

Integration: 3.7 hours

Avg. Moon age: 25.33 days

Avg. Moon phase: 23.79%

Basic astrometry details

Astrometry.net job: 1682990

RA center: 18h 53' 37"

DEC center: +33° 2' 6"

Pixel scale: 1.456 arcsec/pixel

Orientation: -101.547 degrees

Field radius: 0.301 degrees

Resolution: 1260x794

Locations: William J. Maloney Observatory, Pontotoc, Texas, United States


This is Messier 57 also known as the Ring Nebula as everyone knows. I only went with subs of 2-minutes maximum but I regret this as I noticed I was obtaining a ring of nebulosity outside of the ring. It is very faint but had I shot some longer exposures it would have shown up clearly. That is a challenge for another year. :-)



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Messier 57 (Ring Nebula), 


            WJM Observatory