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Contains:  M 57, NGC 6720, Ring Nebula
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M57 - Ring nebula, 


            Grozdan Grozev
M57 - Ring nebula
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M57 - Ring nebula

Technical card

Imaging telescopes or lenses: Skywatcher 120/1000 Achromat Refractor Skywatcher 120x1000

Mounts: Skywatcher EQ5 motorized + ST4 port EQ5 motorized

Software: Adobe Photoshop CS3  ·  Deep Sky Stacker

Dates:Aug. 10, 2013

Frames: 18x25" ISO3200

Integration: 0.1 hours

Darks: ~17

Avg. Moon age: 3.39 days

Avg. Moon phase: 12.47%

Basic astrometry details job: 3365235

RA center: 18h 53' 24"

DEC center: +32° 55' 37"

Pixel scale: 0.886 arcsec/pixel

Orientation: 247.761 degrees

Field radius: 0.769 degrees

Resolution: 5202x3465

Locations: Rozhen National Observatory, Chepelare, Smolyan, Bulgaria

Data source: Traveller


This was shot back in the summer of 2013. I don't remember how I hid the purple hallo around the stars :-).



Grozdan Grozev
License: None (All rights reserved)

Sky plot

Sky plot


M57 - Ring nebula, 


            Grozdan Grozev