Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 94  ·  NGC 4736
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M94 - NGC 4736 HaLRGB Image, 



    
        

            Eric Coles (coles44)
M94 - NGC 4736 HaLRGB Image
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M94 - NGC 4736 HaLRGB Image

Acquisition details

Dates:
April 20, 2016 ·  April 21, 2016 ·  April 25, 2016 ·  April 30, 2016 ·  May 2, 2016 ·  May 10, 2016 ·  May 11, 2016 ·  May 12, 2016
Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 10×1800(5h) bin 1×1
Astrodon Green Tru-Balance E-Series Gen 2: 9×1800(4h 30′) bin 1×1
Astrodon H-alpha 3 nm: 8×1800(4h) bin 1×1
Astrodon Luminance Tru-Balance E-Series Gen 2: 60×1800(30h) bin 1×1
Astrodon Red Tru-Balance E-Series Gen 2: 9×1800(4h 30′) bin 1×1
Integration:
48h
Avg. Moon age:
13.47 days
Avg. Moon phase:
55.28%

RA center: 12h50m50s.9

DEC center: +41°0657

Pixel scale: 0.507 arcsec/pixel

Orientation: 77.934 degrees

Field radius: 0.339 degrees

Resolution: 620x930

File size: 237.3 KB

Locations: Sierra Remote Observatories, Shaver Lake, California, United States

Description

From Wikipedia, "M94 contains both an inner ring with a diameter of 70" and an outer ring with a diameter of 600". These rings appear to form at resonance locations within the disk of the galaxy. The inner ring is the site of strong star formation activity and is sometimes referred to as a starburst ring. This star formation is fueled by gas that is dynamically driven into the ring by the inner oval-shaped bar-like structure."

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M94 - NGC 4736 HaLRGB Image, 



    
        

            Eric Coles (coles44)