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Abell21美杜莎星云
Photographer
镇江句容仑山湖
有着古希腊神话中蛇发女妖的名字，这个星云美丽而妖艳。累积曝光时间短了点，周边暗星云几乎看不到，有机会会再拍。
Equipment
CameraZWO ASI294MM Pro
Telescope/LensSky-Watcher150/750
MountiOptron GEM28
FilterOptolong 3nm Hα、OIII
Shooting Data ( Shooting Date: 2023-12-07 )
Total FramesH11/O9
Exposure单张300s，累计1.67h
Sky Coordinates
Right Ascension (RA)07h 29m 00.0s
Declination (Dec)+13° 14′ 13.8″
FOV Radius0.7226° (43.35′)
Pixel Scale1.275″/px
Rotation Angle355.06° E of N (Clockwise)
Parity正像
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