萬宜水庫西壩天文公園 M42

C.L.Chan

M42, 上週未(2-3 Nov 2019) 參加了香港天學會在萬宜水庫西壩天文公園舉行的秋季觀星營, 這裡算是光污染較低的地方, 用免費軟件疊了10張曝光45秒的獵戶座大星雲.

Orion Great Nebula. HKT 2019/11/ 3, 00h38m to 00h56m, Canon700D Camera, IR filter removed. Soligor 450mm lense f/8, ISO 6400, Astronomik light pollution filter is used. Exposure 45sec each, RAW format. Use Deep Sky Stacker software to stack 10 light frames,10 Dark frames, 10 Bias frames and 12 flat frames. Brightness & contrastadjustment by GIMP, final touch by Microsoft Photo.Place where the photos takenis Astro Park at Sai Hung, Hong Kong. 萬宜水庫西壩天文公園