七妹星團為最明亮的疏散星團

C.L.Chan

M45, Pleiades, 七妹星團為天上最明亮的疏散星團, 一如我們的中學, 全部成員的年齡都很一致 , 是年輕的恆星.

HKT 2019/11/ 2, 21h14m to 21h31m, Canon 700D Camera, IRfilter 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 16 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