150 x 0.005" ISO/Gain: 180 - Player One Photosphere 7,5 nm 540
Chelyabinsk, Russia
May 30th, 2025
413
2
Sunspot groups on the morning of 30.05.2025 at 08:59 UTC+5. From left to right, top to bottom - 4100, 4101, 4096, 4099, 4092. SvBony SV503 102ED, Celestron Advanced GT, film aperture filter, Player One Photosphere 7.5 nm 540 nm filter, SvBony SV305M Pro - 5ms gain 180. AutoStakkert - 150/3000 fr, Photoshop.
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