Sky this Week

The cat’s eye nebula, NGC 6543,  is a small, bright, bluish-green planetary nebula in the constellation Draco.

Image taken on June 20, 2006 at 06:51 UT from Louisville, CO with a Celestron Nexstar11 telescope, Meade F3.3 focal reducer, and Astrovid Stellacam II video camera. Camera settings were 9/14 gain, integrate 128 (4.2 sec), and medium gamma. The 10 minute video images were dark subtracted, flat field and bias corrected with ImagesPlus, stacked and aligned with Registax3. Weather conditions were partly cloudy, turbulence 5/10, transparency good, no wind, temperature was 64°F, 40% humidity.