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M57,环状星云
Astrobin IOTD 20250731
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相机 miniCAM8M
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曝光时长 6h 55'
望远镜: Askar 185 APO
赤道仪: Astro-physics Mach2 GTO
曝光时间: 共计6h 55m
Hα: 1h 55m (23 × 300″)
SII: 1h 35m (19 × 300″)
OIII: 1h 45m (21 × 300″)
ArIII: 1h 40m (20 × 300″)
颜色:
[OIII] = Blue;[ArIII] = Green;[SII] = Yellow;[Hα] = Red;Sky + Galaxies — HOO;Stars — AOO
作者.
Nico Carver
