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M51
内蒙松山天文台
从24年年底陆陆续续拍了三年，Lrgbh一起累计搞了175小时，L通道五十几个小时，搞出来了背景暗云气
Equipment
CameraTouptek2600mm
Telescope/LensSkyWatcher200F4
MountEQ6R
FilterAntlia 4.5mm LRGBSHO
Shooting Data ( Shooting Date: 2026-03-15 )
Total FramesL320 R101 G128 B102 H400
Exposure175h
Sky Coordinates
Right Ascension (RA)13h 29m 53.6s
Declination (Dec)+47° 11′ 41.3″
FOV Radius0.9875° (59.25′)
Pixel Scale0.969″/px
Rotation Angle89.63° E of N (Clockwise)
Parity正像
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