Messier 42 (M 42, M43)
梅西耶 天體 42, 43
M42 獵戶座大星雲 (Orion Nebula) ( M42 - M43 )
M42 - M43
https://en.wikipedia.org/wiki/Orion_Nebula
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion, [b] and is known as the middle "star" in the "sword" of Orion. It is one of the brightest nebulae and is visible to the naked eye in the night sky with apparent magnitude 4.0. It is 1,344 ± 20 light-years (412.1 ± 6.1 pc) away[3][6] and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light-years across (so its apparent size from Earth is approximately 1 degree). It has a mass of about 2,000 times that of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.
https://zh.wikipedia.org/zh-tw/%E7%8C%8E%E6%88%B7%E5%BA%A7%E5%A4%A7%E6%98%9F%E4%BA%91
獵戶座大星雲（M42，NGC 1976）是一個位於銀河系的瀰漫星雲，在天空中坐落在獵戶座的獵戶腰帶位置[b]，作為獵戶之劍的中心。獵戶座大星雲是亮度最高的星雲之一，在夜空中裸眼可見，視星等為4.0。星雲距離地球1,344正負20光年（412.1正負6.1秒差距）[4][5]，是最接近地球的一個恆星形成區。星雲寬度約24光年，因此從地球觀察其寬度約為1度。它的質量約為太陽的2,000倍。
長久以來，獵戶座大星雲都是夜空中倍受關注的拍攝對象，並且它也得到了天文學家們的廣泛研究。[6]對此星雲的研究可揭示出恆星和行星系統的形成過程：星雲中的氣體和塵埃因引力坍縮，並最終演變為星體。近年天文學家已直接觀測到該星雲四合星附近的原行星盤、棕矮星、激烈的氣體湍流，以及附近大量出現的光電離恆星。
SPA-1-CCD RGB 180 sec 2020-10-14
Crop 裁切
SPA-1-CCD ( Takahashi FSQ-106ED 這支 天文望遠鏡 報價大約新台幣 16萬元 )
SPA-1-CCD LRGB 180 sec x2 Imaging: 2020-10-14, Re-processing: 2023-06-01
2026-08-20
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