Sun on June 28, 2026. Sunspot group 4478.
Telescope: Celestron EdgeHD 8" (D=203 mm, f=2032 mm),
aperture filter with Baader Film,
Camera: ZWO 290 mm,
filter: Photosfere 7.5 nm.
Exposure: 12 ms,
gain: 125.
Mount: HEQ5 Pro.
Northern Tushino, balcony.
Stacking of 250 frames out of 4984.
Processing in AS, AstroSurface, Ps.
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