Sun 2025. 04. 25.

Time : 2025.04.25. 12:40 KST
Condition : Seeing 5/10, Cloudy 1/10, Transparency 7/10
Telescope : Takahashi TOA-130 (FL/1000 mm), ×0.8 Reducer, Harmonic Equatorial Mount
Camara : ZWO ASI-183MM, stack 258, Exposures 60 s, Gain 200, Exp time 0.35 ms
Accessory : Baader AstroSolar D=3.8 Film, full aperture, Baader Solar Continuum & Contrast Booster Filter
Software : Processing in Autostakkert! 3.0.14, Photoshop cc 2024, Registax V6, Topaz labs
Location : ButterStar Observatory, N37°54′16″, E127°3′33″, 80m

g=16, f=133
-6B2, 7C6, 12A1, 3D16, -15B4, -3D25, -19B2, -4B10, 11E32, -3A1, -31D11, -4C5, 15B5, -12B4, -27G7, -25J2

Photographer : 오성진

Ca-K Full Disk

Time : 2025.04.25. 14:42 KST

Takahashi TOA-130, Lunt Ca-K Module(393.4 nm)

ZWO 533MC, stack 418, Exposures 60 s, Gain 250, Exp time 1.2 ms

H-Alpha Full Disk

Time : 2025.04.25. 14:57 KST

Telescope : Lunt 130, Double stack, BF34, Harmonic Mount

Camera : ZWO ASI-183MM, stack 645, Exposures 60 s, Gain 250, Exp time 1.2 ms

Accessory : Contrast Booster Filter

R=1.6, G=0.6, B=0.1, RGB=1.3

stack 509, Exposures 60 s, Gain 250, Exp time 1.8 ms

stack 423, Exposures 60 s, Gain 250, Exp time 1.8 ms

Takahashi TOA-130 (FL/1000 mm)

ZWO ASI-183MM, stack 256, Exposures 60 s, Gain 200, Exp time 0.65 ms

Takahashi TOA-130 (FL/1000 mm)

ZWO ASI-183MM, stack 381, Exposures 60 s, Gain 200, Exp time 0.65 ms

2025년 4월 25일의 해