Celestial hemisphere:  Northern  ·  Constellation: Draco (Dra)  ·  Contains:  IC 4677  ·  NGC 6543  ·  NGC 6552  ·  PK096+29.1
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Cat's Eye, 



    
        

            Kharan
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Cat's Eye

Getting plate-solving status, please wait...
Cat's Eye, 



    
        

            Kharan
Powered byPixInsight

Cat's Eye

Acquisition details

Dates:
Oct. 29, 2015
Frames:
Baader Blue 2": 5×600(50′) -20°C bin 1×1
Baader Green 2": 5×600(50′) -20°C bin 1×1
Baader L 2'': 2×1200(40′) -20°C bin 1×1
Baader L 2'': 21×60(21′) -20°C bin 1×1
Baader L 2'': 15×600(2h 30′) -20°C bin 1×1
Baader Red 2": 5×600(50′) -20°C bin 1×1
Integration:
6h 1′
Flats:
10
Bias:
100
Avg. Moon age:
17.05 days
Avg. Moon phase:
94.23%

RA center: 17h58m37s.97

DEC center: +66°3905.5

Pixel scale: 2.207 arcsec/pixel

Orientation: 135.394 degrees

Field radius: 0.618 degrees

More info:Open 

Resolution: 1613x1205

Locations: Puolivälinkangas - Oulu, Oulu, Finland

Description

Third effort on the Cat's Eye Nebula over the two years and the first published. I assumed I had differential flexture because of elongated stars and dialed the exposures down to 10 mins, but turns out some tilt had creeped in (the deformation was showing in 1 sec exposures as well). Corrected in post what I could, but will need to redo this with the Celestron at some point.

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Cat's Eye, 



    
        

            Kharan