Time : 2021.07.21. 12:15 KST
Condition : Seeing 6/10, Cloudy 7/10, Transparency 6/10
Telescope : Takahashi FC-100D (D=100 mm, F=740 mm), Harmonic Mount
Camara : ZWO ASI-183MM, stack 197, Exposures 120 s, Gain 45, Exp time 1.3 ms
Accessory : Baader AstroSolar D4 Film, full aperture, Baader Solar Continuum & Contrast Booster Filter
Software : Processing in Autostakkert! 3.0.14, Photoshop cc 2020, Registax V6, Topaz labs
Location : ButterStar Observatory, N37°54′16″, E127°3′33″, 80m
Sunspot Data : g=5, f=55
26E, 25D, 22G, -16B, -27D
Photographer : 문장현
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×2.5 Powermate, stack 261, Exposures 120 s, Gain 145, Exp time 2.2 ms
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×2.5 Powermate, stack 869, Exposures 120 s, Gain 145, Exp time 2.4 ms
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×2.5 Powermate, stack 435, Exposures 120 s, Gain 145, Exp time 2.4 ms
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×2.5 Powermate, stack 521, Exposures 120 s, Gain 145, Exp time 2.4 ms
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