M51 Whirlpool Galaxy

 

Date: 21 May night, 2003

Telescope: Celestron 8 SCT with stabilized mirror, on Gemini G-41 mount

Guiding: ST-4 Autoguider with Celestron C80, 80mm F11 refractor piggybacked on C8.

Camera: MX916 with ICX423AL (undebugged, more noise in image)

Location: Tai Mei Tuk, Hong Kong

Exposure: 3x10mins

Software: Image acquisition by Astroart, dark substracted and final brightness adjustment by Astroart