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Contains:  NGC 6543, IC 4677
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Cat's Eye Nebula, under urban conditions and full moon

Technical card

Resolution: 4943x3105

Dates:March 18, 2018April 9, 2018April 18, 2018April 19, 2018March 28, 2019April 15, 2019April 17, 2019April 18, 2019April 19, 2019

Frames:
Baader Ha 1.25" 7nm: 50x20" (gain: 200.00) -20C bin 1x1
Baader Ha 1.25" 7nm: 79x600" (gain: 200.00) -20C bin 1x1
Baader Ha 1.25" 7nm: 27x1200" -20C bin 1x1
Baader Planetarium O3 1.25" 8.5nm: 50x20" (gain: 200.00) -20C bin 1x1
Baader Planetarium O3 1.25" 8.5nm: 66x600" (gain: 200.00) -20C bin 1x1
Baader Planetarium O3 1.25" 8.5nm: 25x1200" -20C bin 1x1

Integration: 42.1 hours

Darks: ~35

Flats: ~27

Bias: ~100

Avg. Moon age: 11.58 days

Avg. Moon phase: 53.51%

Astrometry.net job: 2661869

RA center: 269.639 degrees

DEC center: 66.634 degrees

Pixel scale: 0.494 arcsec/pixel

Orientation: 88.641 degrees

Field radius: 0.400 degrees

Locations: Nürnberg, Nürnberg, Bayern, Germany

Data source: Backyard

Description

Object description (wikipedia.org):

The Cat's Eye Nebula or NGC 6543, is a relatively bright planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum was investigated by the English amateur astronomer William Huggins, demonstrating that planetary nebulae were gaseous and not stellar in nature. Structurally, the object has had high-resolution images by the Hubble Space Telescope revealing knots, jets, bubbles and complex arcs, being illuminated by the central hot planetary nebula nucleus (PNN). It is a well-studied object that has been observed from radio to X-ray wavelengths.

Comments

Author

superelch
Thomas Richter
Like

Revisions

B

color changes, core inserted

C

darker background, noice reduction

D

changing star colors to RGB-like style

Sky plot

Sky plot

Histogram

Cat's Eye Nebula, under urban conditions and full moon, 





    
        

            Thomas Richter