Hemisphere:  Northern  ·  Contains:  IC4677  ·  NGC 6552  ·  NGC6543  ·  NGC6552  ·  PK096+29.1
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NGC 6543 - The Cat's Eye Nebula (Bicolor RGB), 


            Frank Breslawski
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NGC 6543 - The Cat's Eye Nebula (Bicolor RGB)

Imaging telescopes or lenses: Lacerta Newton ohne Namen 250/1200

Imaging cameras: ZWO ASI 294MC Pro  ·  Astrel Instruments AST16200B

Mounts: EQ8

Guiding cameras: ZWO ASI 174MM Mini

Software: PixInsight 1.8

Filters: Baader UV/IR Cut  ·  Astronomik Deep-Sky G  ·  Astronomik Deep-Sky R  ·  Astronomik Deep-Sky B  ·  Astronomik H-Alpha 6nm CCD  ·  Astronomik OIII 6nm CCD

Accessory: GPU Pal Gyulai GPU 2" Aplanatic Coma Corrector  ·  ZWO Off Axis Guider

Dates:May 29, 2020May 30, 2020May 31, 2020June 1, 2020June 2, 2020June 8, 2020June 12, 2020June 13, 2020

Astronomik Deep-Sky B: 12x300" -20C bin 1x1
Astronomik Deep-Sky G: 12x300" -20C bin 1x1
Astronomik Deep-Sky R: 12x300" -20C bin 1x1
Astronomik H-Alpha 6nm CCD: 39x600" -20C bin 1x1
Astronomik OIII 6nm CCD: 35x600" -20C bin 1x1
Baader UV/IR Cut: 617x30" (gain: 120.00) -10C bin 1x1

Integration: 20.5 hours

Darks: ~47

Flats: ~12

Bias: ~200

Avg. Moon age: 13.22 days

Avg. Moon phase: 64.98%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 4171902

RA center: 17h 58' 33"

DEC center: +66° 38' 32"

Pixel scale: 1.035 arcsec/pixel

Orientation: 2.309 degrees

Field radius: 0.248 degrees

Resolution: 1370x1044

Locations: Home, Bergisches Land, Germany

Data source: Backyard


The OIII data for this nice planetary nebula is quite strong, so I decided to re-process my data and show more of the blue colors which are normally represented by the OIII wavelength.

For Luminace I tried to combine the signal from H-Alpha and OIII which worked really good in this case. This leads to the fact that the PN shows a smooth structure over the whole surface and not only in the very strong areas.



Frank Breslawski
License: Attribution-NonCommercial-ShareAlike Creative Commons


    NGC 6543 - The Cat's Eye Nebula (Bicolor RGB), 


            Frank Breslawski
  • Final
    NGC 6543 - The Cat's Eye Nebula (Bicolor RGB), 


            Frank Breslawski


Description: some adjustments in contrast and sharpness

Sky plot

Sky plot


NGC 6543 - The Cat's Eye Nebula (Bicolor RGB), 


            Frank Breslawski