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Contains:  M 94, NGC 4736
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M94, 





    
        

            1074j
M94

M94

Technical card

Resolution: 2592x2063

Dates:March 11, 2016

Frames: 33x500"

Integration: 4.6 hours

Avg. Moon age: 2.79 days

Avg. Moon phase: 8.53%

Astrometry.net job: 1248486

RA center: 192.725 degrees

DEC center: 41.117 degrees

Pixel scale: 0.652 arcsec/pixel

Orientation: 89.290 degrees

Field radius: 0.300 degrees

Locations: Paradise, Chiricahua Mountains, AZ, United States

Description

Second time imaging this object with the goal to bring out the outer ring. This is a very difficult to do as it's so dim and the core is so bright. I had to use a combination of exposures plus lightly and heavy stretching and layer it all together. In spite of 20 500s luminosity subs, there was still a fair amount of noise present in the final image. Seeing and transparency were good from my Bortle 1-2 site. 5x100s, 20x500s L, 8 x 250s RGB. I acquired some Ha from the first attempt that I may add at some future point as I've spent long enough on this image.

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1074j
1074j
License: Attribution-NonCommercial Creative Commons
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M94, 





    
        

            1074j