畢星協與M45
金牛座畢星協(下) ,與七姊妹星疏散星團 (上, 編號M45)星雲聚集誕生成新生的恆星集團, 恆星風把剩餘的星雲吹走 , 便是疏散星團 . 疏散星團繞銀心旋轉時 , 外力把它變成更鬆散的集團 , 便是星協 , 日後星星還會分離開到更遠 .Hyades, & M45,2015/8/17, HKT 04h 14m to 04h 17m,Canon ESO700D, IR Low pass filterremoved. Canon Zoom Lens EF-S 18-55mm, ISO 6400, Atf.l. 48 mm, f/5.6 , Exposure 30 sec.for each frame. With motor drive HalleyEquatorial Mounting .Atmospherictransparent : 10/10, Seeing : 7/10. Processedand stacked by free soft- ware Deep Sky Stacker with 5 Light frames, 16 Dark frames,11 Bias frames, 11 Flat frames. Taken at 台灣玉山東埔山莊 , Tai Chung, Tai Wan.
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