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valy

17 Oct 2019 16:15



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Pot jura ca am vazut-o undeva, dar acum nu gasesc nimic relevant. Legat de transparenta, in principiu folia astrosolar baader are substrat transparent (cred) si depundere ND 3/5 si daca lumea este multumita cu ea nu vad dece n-ar fi si cu ceva transparent. 
https://astrosolar.com/en/information/about-astrosolar-solar-film/astrosolar-technical-info/

LE: Evrika -  https://www.baader-planetarium.com/en/solar-observation/astrosolar-viewers-and-film/turbofilm-127-x-51-cm-nd-01.html !