Niels V. Christensen
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Picture taken with SBIG ST-8XME, Astro Physics CCD telecompressor 0.67 and Meade LX200ACF 16" in polar mount. Guide via WO FLT-110/STL 237H CCD. CCDSoft, TheSky6 SW and Astronomik filters used.
Reprocessing of a pure Ha picture of the impressive Bubble Nebula. The picture is taken less than 10km from Copenhagen city center in Denmark. Total exposure times are; Halpha~3hours and exposure time for one frame up to 900sec.