NGC7635 Bubble Nebula

Date: 27 Septmeber 2004 with Day14 Moon

Telescope: Vixen R200SS  8f4 Newtonian on Gemini G-41 mount

Guiding: ST-4 Autoguider with Celestron C80, 80mm F11 refractor on side-by-side plate.

Camera: Genesis KAF-1602E with Astronomik FR-4 filterwheel, Baader/Celestron Coma Corrector.

Location: Tai Mei Tuk, Hong Kong

Exposure: Astronomik Hydrogen-alpha:  unbinned     14 x 15mins

Software: Image acquisition by MaximDL, calibration in IRIS, auto-alignment also in Astroart, sigma-combined by Sigma, and final brightness adjustment in Photoshop.