About this Image
The name of this bright but small Planetary nebula is caused by it's bright blue-gree color.
The color is generated by strong O-III emission, accompanied by much fainter H-alpha and H-beta emission.
16" cassegrain in secondary focus at f/10
|Camera||SBIG STL-11000M with AO-L at -25C, internal filter wheel|
|Date||Nov 23, 2006.|
|Sky Conditions||mag 5 sky, L: raw FWHM 1.4", temperature 10 C|
|Exposure||L:R:G:B = 30:10:10:10 minutes (5-minute sub-exposures), all 1x1;|
|Processing||Image aquisition in Maxim 4.56; calibration, preprocessing and deconvolution in CCDStack; wavelet filtering; final processing in Photoshop CS2|