Cat's Eye Nebula - NGC 6543

Planetary Nebula

 

Imaging telescope or lens:GSO 8" f/5 Newton

Imaging cameras:ZWO ASI 183 MM PRO, Moravian G2-8300FW

Mount:SkyWatcher NEQ6 Pro Goto

Guiding telescope or lens:GSO 8" f/5 Newton

Guiding camera:Astrolumina Alccd5L-IIc

Focal reducer:Pal Gyulai GPU Aplanatic Koma Korrector 4-element

Software:Main Sequence Software Seqence Generator Pro, Adobe PhotoShop CS5, FitsWork 4, INDILib, CCDCiel, DeepSky Stacker Deep Sky Stacker 3.3.4, PHD2 Guiding

Filters:Baader Ha 1.25" 7nm, Baader Planetarium O3 1.25" 8.5nm, Baader R 1.25'' CCD Filter, Baader B 1.25'' CCD Filter, Baader G 1.25'' CCD Filter

Accessory:TSOptics TS Off Axis Guider - 9mm

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

 

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.

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