M 13 = NGC 6205

Optics	Skywatcher 130-mm reflector f/5 + coma corrector
Camera	Canon EOS 1000D modified (ISO 800)
Mount	NEQ6 Pro
Exposure	80 s x 80 frames
Processing	80 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted and flatfield divided; fixed with Fitswork V4.41, IRIS V5.33 and Photoshop CS3 Extended; 0.5x resized and cropped;
Comments	images taken by Zhu Mao and processed by me; severe city light pollution; A 11^m.4 spiral galaxy NGC 6207 is visible to the lower left of M13. The streak to the left of M13 is a ghost attributed to the focuser leaking light from the ambient. Click the above image to browse a higher resolution version.

Image	M 13 = NGC 6205
EXIF Time	2010/05/23 15:49:48 UTC - 16:14:32 UTC
Place	Mt. Guizi, Wuchang, Hubei Province, China
Optics	Skywatcher 130-mm reflector f/5
Camera	Canon EOS 400D (ISO 800)
Mount	NEQ6 Pro
Exposure	60 s x 11 frames
Processing	11 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted and flatfield divided; fixed with Fitswork V4.25, IRIS V5.33 and Photoshop CS3 Extended; 0.5x resized and cropped;
Comments	images taken by Zhu Mao and processed by me; severe city light pollution; SNR still low due to shortage of light frames; 11^m.4 spiral galaxy NGC 6207 visible to the left of M13.

Globular Cluster