Optolong L-Pro 2 Inch Nebula Filter Minolta Focal Length: 2800 mm (110")

Focal Length: 2800 mm (110")

Usage: for the DSLR 2" filter holder and direct connection on all Hyperion 68° eyepieces

The Explorer 250PDS primary and secondary mirrors are made from special Low-Expansion Borosilicate glass

PARABOLIC PRIMARY MIRRORS

Optolong L-Pro 2 Inch Nebula Filter Minolta Focal Length: 2800 mm (110")Optolong 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