2025. 02. 20.

Time : 2025.02.20. 12:51 KST
Condition : Seeing 2/10, Cloudy 0/10, Transparency 1/10
Telescope : Takahashi FC-100D (D=100 mm, F=740 mm), Celestron CGE PRO Equatorial Mount
Camara : ZWO ASI-183MM, stack 373, Exposures 60s, Gain 200, Exp time 1.9ms
Accessory : Baader AstroSolar D5 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=10, f=72
18J2, -9C6, -6A3, -11A3, 2A3, 17D5, -17F22, 4J2, 6J3, -14E23

Photographer : 공유 

H-Alpha Full Disk

Time : 2025.02.20. 13:12 KST

Telescope : Coronado SolarMaxII 90/BF30 - Single stack, Celestron CGE PRO Equatorial Mount

Camera : ZWO ASI-183MM, stack 1044, Exposures 60s, Gain 200, Exp time 4.8ms

Accessory : MoonLite Motor-focuser, Contrast Booster Filter

Software : Processing in Autostakkert! 3.0.14, Photoshop cc 2024, Registax V6, Topaz labs

stack 261, Exposures 60s, Gain 200, Exp time 1.7ms
stack 1905, Exposures 60s, Gain 200, Exp time 4.7ms

stack 1908, Exposures 60s, Gain 200, Exp time 4.4ms

stack 3021, Exposures 60s, Gain 200, Exp time 4.6ms

stack 2607, Exposures 60s, Gain 200, Exp time 5.0ms

stack 2487, Exposures 60s, Gain 200, Exp time 4.7ms

x2.5 stack 1611, Exposures 60s, Gain 220, Exp time 14.0ms

x2.5 stack 2716, Exposures 60s, Gain 250, Exp time 13.5ms

x2.5 stack 3183, Exposures 60s, Gain 250, Exp time 12.0ms

x2.5 stack 1347, Exposures 60s, Gain 250, Exp time 13.7ms

2025년 2월 20일의 해