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valy

30 Apr 2017 23:41



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Cred ca are un barlow in interior, nu e newton mak (cu corector frontal), deci pare a fi un newton clasic cu barlow:
http://www.astroshop.eu/seben-telescope-n-150-1400-big-boss-eq-3/p,3997#tab_bar_0_select
This is achieved by means of a built-in corrector lens that artificially increases the focal length.