M57

Crop 1.5X

0bject

M57 Planetary Nebula (Ring Nebula) in Lyra
Date June 11 - July 10, 2014
Exposure HαOIIIOIIIRGB  585:150:150:30:30:30  (Composite, cropped, 16.25 hours)
Camera STL11000M with Baadeer (NB) and AstroDon Gen II (RGB) filters (watter assisted cooling)
Telescope ASA 10N f/3.6 on AP900GTO CP3
Guiding External guide head with 50mm MiniBorg
Processing MaximDL, PhotoshopCS6; GradientXterminator
Comments Moderate seeing over several nights; acquired with CCD Commander


 

0bject

M57 Planetary Nebula (Ring Nebula) in Lyra
Date July 27-29, 2010
Exposure HαRGB  225:10:10:10  (Composite, cropped, magnified 160%)
Camera STL11000M with Astronomik filters (watter assisted cooling)
Telescope ASA 10N f/3.6 on AP900GTO CP3
Guiding External guide head with 50mm MiniBorg
Processing MaximDL, PhotoshopCS3 ; GradientXterminator
Comments Moderate seeing, high thin clouds; moon just past full


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0bject

M57 Planetary Nebula (Ring Nebula) in Lyra
Date May 31 & June 1, 2009
Exposure SII Ha OIII 50:50:50 (cropped; various color combinations)
Camera STL11000M with Baader narrow band filters
Telescope ASA 10N f/3.6 on Losmandy G11 with Gemini
Guiding External guide head with E-finder
Processing MaximDL, PhotoshopCS3
Comments Test run for new Baader filters; focus is soft

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0bject

M57 Planetary Nebula (Ring Nebula) in Lyra
Date July 30 & 31, 2006
Exposure LRGB 100:15:15:15 (RGB binned 2x2)
Camera ST2000XM with SBIG filters
Telescope Meade 10" SCT @ f/10 on Losmandy G11 w/Gemini
Guiding self-guided
Processing MaximDL, FITS Liberator, PhotoshopCS2, AstroActions
Comments Very warm (85-90) and humid, moderate seeing

                                    All text and images Gregg L. Ruppel 1998-2014.