NGC2237 Rosette Nebula
Date: 16 October 2004
Telescope: Pentax 200mm f4 SMC Takumar at f4 on Gemini G-41 mount
Guiding: ST-4 Autoguider with Bosma 80mm f6 refractor on side-by-side plate.
Camera: Genesis KAF-1602E with Astronomik FR-4 filterwheel.
Location: Tai Mei Tuk, Hong Kong
Exposure: Astronomik Hydrogen-alpha: unbinned 15 x 10mins
Software: Image acquisition by MaximDL, calibration and auto-alignment also in Astroart, sigma-combined by Sigma, and final brightness adjustment in Photoshop.
Comment: Hazy sky and light pollution!