NGC 6543 Cats Eye Nebula

Constellation Draco

Discovered by William Herschel in 1786, distance 3.6 kly (SEDS).

The visible nebula in this image is approximately 25x30 arcseconds and the NGC catalog magnitude is 9

Image 27 Aug 2007 SLOOH Dome 2 (x2 magnification on the right)