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Contains:  IC 4677, IC4677, NGC 6543, NGC6543, NGC6552, PK096+29.1
Cat's Eye, 



    
        

            Kharan
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Cat's Eye

Technical card

Imaging telescopes or lenses:Skywatcher Explorer 200PDS

Imaging cameras:QHYCCD QHY9M

Mounts:Skywatcher NEQ6 PRO Synscan

Guiding telescopes or lenses:Skywatcher 9x50 finderscope

Guiding cameras:QHYCCD QHY5L-IIc

Focal reducers:Baader MPCC Mk III

Software:PhotoshopPixinsight

Filters:Baader Red 2"Baader Green 2"Baader Blue 2"Baader L 2''

Accessory:QHYCCD QHY 2" Filter wheelSeletek Armadillo


Dates:Oct. 29, 2015

Frames:
Baader Blue 2": 5x600" -20C bin 1x1
Baader Green 2": 5x600" -20C bin 1x1
Baader L 2'': 2x1200" -20C bin 1x1
Baader L 2'': 21x60" -20C bin 1x1
Baader L 2'': 15x600" -20C bin 1x1
Baader Red 2": 5x600" -20C bin 1x1

Integration: 6.0 hours

Flats: ~10

Bias: ~100

Avg. Moon age: 17.05 days

Avg. Moon phase: 94.23%


Astrometry.net job: 828801

RA center: 17h 58' 37"

DEC center: +66° 39' 5"

Pixel scale: 2.207 arcsec/pixel

Orientation: 135.394 degrees

Field radius: 0.618 degrees


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.

Comments

Author

Kharan
Kharan
License: None (All rights reserved)
1990
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  • Final
    Cat's Eye, 



    
        

            Kharan
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Cat's Eye, 



    
        

            Kharan