Cat’s Eye Neb­ula (NGC 6543)

Cat's Eye Nebula (NGC 6543) - Astrophotography Martin Rusterholz

The Cat’s Eye Neb­ula or NGC 6543, is a plan­et­ary neb­ula in the con­stel­la­tion of Draco at mag­nitude 8.1 with high sur­face bright­ness, dis­covered by Wil­li­am Her­schel in 1786. While the bright­er inner neb­ula is rather small (16″ * 25″), it has an extened halo of mat­ter that the pro­gen­it­or star ejec­ted dur­ing its red giant phase. This halo extends over a dia­met­er of about 300″. The cat’s Eye neb­ula lies three thou­sand light-years from Earth.

The image is a com­bin­a­tion of broad­band LRGB and nar­row­band Ha/​OIII images. Long exposed Ha/​OIII where used to dis­play the faint, out­er halo of the PN. To reveal the struc­ture of the small, very bright cen­ter, a short exposed RGB was blen­ded over the ‘wide-field’ image.

[descrip­tion from wikipedia]

Details

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RCOS 14.5″ f/​8
ASA DDM85
Andor CG16M
Astro­don Gen2
LRGBHaOIII 440:140:140:140:510:510 min.
ROSA Remote Obser­vat­or­ies South­ern Alps
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart Cat’s Eye Neb­ula (NGC 6543)

Cat's Eye Nebula (NGC 6543) Sky Chart - Astrophotography Martin Rusterholz

Image cre­ated by Skychart