Dew accumulation on optical surfaces of professional telescopes degrades performance and necessitates difficult, costly cleaning. Heating large telescope mirrors to prevent dew formation is ...
BARSKA Optics’ AE11120 Magnus 65ED is an f/6 apochromatic refractor with a fully multicoated triplet lens. The unit includes a 2″ Crayford focuser, a 90° erect-image star diagonal, an extendable dew ...
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