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valy

27 Iul 2020 12:43



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Pai tocmai ca fac, dar poate e problema de definitie: ce inseamna newton mic?

https://www.teleskop-express.de/shop/product_info.php/info/p5768_TS-Optics---Boren-Simon-6--f-2-8-PowerNewton-Astrograph.html

https://www.takahashi-europe.com/en/epsilon-180ED.specifications.php

https://www.teleskop-express.de/shop/product_info.php/info/p3933_Skywatcher-Explorer-130PDS---130-mm-f-5-Newtonian---2--Crayford-focuser.html

