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valy

26 Feb 2023 01:34



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Ar fi asa ceva:
- https://www.edmundoptics.com/f/schott-colored-glass-heat-absorbing-shortpass-filters/39633/
- https://www.teleskop-express.de/shop/product_info.php/info/p15420_Optolong-2--IF-IR-UV-blocking-filter-on-KG3-glass.html

Sau un uv/ir block mai larg - Astronomik L1:
https://www.teleskop-express.de/shop/product_info.php/info/p8438_Astronomik-L-1---UV-IR-Block-Filter-1-25---M28-5-.html