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PARABOLIC PRIMARY MIRRORS
Designed for convenient use on a tabletop
continuous heat that will prevent dew from forming even under heavy dew conditions
The Explorer 250PDS primary and secondary mirrors are made from special Low-Expansion Borosilicate glass
Focal Length: 2800 mm (110")
Optolong L-Pro 2 Inch Nebula Filter Minolta PARABOLIC PRIMARY MIRRORSOptolong L Pro 2 Inch Nebula Filter Blocks UV and IR (700 1100 nm)High transmission at passbandImproved color balance for DSLRs and One Shot Color Astro Cameras, e. g. ASI Color Cameras cooled or uncooled by ZWO. High optical qualityThe L Pro Nebula filter permits roughly 3x longer exposure times than without a filter and therefore improves contrast significantly. L Pro Introduction Optolong L Pro (L Professional) filter is designed to improve the
