H-alpha

The appliance of H-alpha filters in solar observations

Scientific report of March 29, 2025 partial solar eclipse

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Spectacle projection Jasło partial solar eclipse 2025 3

We are over a month ahead of the last partial solar eclipse on Saturday, March 29, 2025. It wasn’t a big eclipse in most European countries. Because of the largest magnitude of 0.9376, this eclipse was classified as a deep partial. Considering the Gamma factor 1.0405, the totality was visible about 210 km above the … Read more

H-Alpha filter in an exceptional observations of solar phenomena

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Mercury in H alpha near Sun

In this short post, I would like to share with you my ideas, on how can we use the Hydrogen-alpha filter for solar observations during exceptional situations. The situations, that I am going to take into account are mostly solar eclipses, but also internal planet transits.  We have less than 2 months to Mercury transit … Read more