Tuesday, June 17, 2025

GONG data-based time-lapse videos of solar activity cycle

John Boyd, an amateur astronomer and a retired Mathematician who used to work in the space program for NASA has recently created a time-lapse video spanning from 2020 to 2024  using the H-alpha Gong images. The videos, which are available via John's YouTube channel https://www.youtube.com/@Ha656nm,  are intended for the outreach for local astronomy club (the Santa Barbara Astronomical Units, SBAU) and educational purposes.

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X-ray flare in a growing active region

Active region 14366 crossed East solar limb at about 18:00 UT on 29 January, 2026. The region was growing rapidly, and it was a location of ...