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Contains:  NGC 6543, IC 4677
Getting plate-solving status, please wait...
Cat's Eye, 





    
        

            Kharan
Cat's Eye

Cat's Eye

Technical card

Resolution: 1613x1205

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: 269.658 degrees

DEC center: 66.651 degrees

Pixel scale: 2.210 arcsec/pixel

Orientation: -44.475 degrees

Field radius: 0.618 degrees

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)
1950
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Revisions

  • Cat's Eye, 





    
        

            Kharan
    Original
  • Final
    Cat's Eye, 





    
        

            Kharan
    B

Sky plot

Sky plot

Histogram

Cat's Eye, 





    
        

            Kharan