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Glossary > Telescopes > Optics > Type of build > Solar H-Alpha

Glossary | Telescopes | Optics | Type of build | Solar H-Alpha

With H-alpha telescopes you can observe prominences, flares and filaments on the Sun. Additionally, these telescopes have an etalon filter and a blocking filter. Caution: you can also buy versions without the blocking filter. You should never use these without a blocking filter.