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Contains:  IC 3475, M 84, M 86, M 87, NGC 4371, NGC 4374, NGC 4388, NGC 4402, NGC 4406, NGC 4413, NGC 4425, NGC 4435, NGC 4438, NGC 4459, NGC 4461, NGC 4473, NGC 4477, NGC 4486, The Eyes
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Markarian chain, 



    
        

            Boutros el Naqqash
Markarian chain
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Markarian chain

Technical card


Dates:March 29, 2016

Frames:IDAS LPS P2 Light Pollution Filter (2"): 36x240" ISO1600

Integration: 2.4 hours

Darks: ~5

Bias: ~22

Avg. Moon age: 20.15 days

Avg. Moon phase: 70.67%

Temperature: 2.00


Basic astrometry details

Astrometry.net job: 1850630

RA center: 12h 28' 0"

DEC center: +12° 56' 34"

Pixel scale: 2.160 arcsec/pixel

Orientation: 49.115 degrees

Field radius: 1.875 degrees


Resolution: 5202x3465

Locations: Site de la Rosette, Hemmingford, Quebec, Canada

Description

Washed out subs (LP). Dirty optics. No flats to correct all the dust spots. No dithering. Terrible noise. I salvaged the night with (very) heavy handed processing :-)

The result is very blue and very "wrong". But so far, it pleases my sore eyes after looking at heaps of noise... But then... Maybe I should realign the histogram :-))))

Comments

Author

Peter_Zbib
Boutros el Naqqash
License: None (All rights reserved)
322
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Sky plot

Sky plot

Histogram

Markarian chain, 



    
        

            Boutros el Naqqash