 |
| Image | M 3 = NGC 5272 |
| Time | 2010/05/23 15:22:44 UTC - 15:46:08 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 10 frames |
| Processing | 10 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; |