Discover the solar activity during different periods

May 28, 2023 (Solar refractor Lunt LS80THa, cycle 25)

January 19, 2023 (Using the pinhole camera principle for a very simple and safe observation technique, cycle 25)

July 16 & 17, 2022 (A new filtering method, cycle 25)

July 3, 2021 (cycle 25)

April 21 & 24, 2021 (Herschel wedge first light, cycle 25)

Year 2016 (cycle 24)

May 6, 2015 (cycle 24)

October 21, 2012 (cycle 24)

Year 2002 (cycle 23)

May 2001 (cycle 23)

March 2001 (cycle 23)

Year 2000 (cycle 23)

March 1989 (cycle 22)

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