獵戶座 M42 大星雲
本帖最後由 C.L.Chan 於 2018-1-15 10:14 編輯獵戶座 M42 大星雲 , 是發光星雲之表表者 , 它是氣體匯聚形成恆星的地方 , 稱為恆星產房 , 新生的恆星發出很強的紫外光 , 激發附近星雲發出獨特的紅光 . OrionM42 Nebula,2018/01/14,HKT 21h10 to 13m , Telescope:Astro Physics, Star 12 ED, D=12cm, F.L.=102cm, Prime Focus, Losmandy G-11Equatorial Mount with motor drive. Manual object targeting. Canon EOS 700D Camera , IR Low pass filter removed.ISO800, 30 sec exposure. CRW Format. Lightframes 6x, Dark frames 5x, Bias frames 5x ,flat frames 12x. Stacking by DeepSky Stacker freeware and processed by Microsoft photo . Atmospheric Transparent:79/10, Seeing :7/10.Equipment borrowedfrom Mr. Ng. Taken at Kennedy Town, 堅尼地城Hong Kong .
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