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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
The filter is optimized for systems with focal ratios between f/0
'Solar Bullet' finder
The new Quantum Series body style is all about ease of operation
with brass insert for eyepiece protection
Cell & 140mm ID Cap - For Refractors
Daystar ERF 150mm with 220mm Cap - E-220N150 Accessories_Adapters The filter is optimized for150mm ERF Glass, Cell & 220mm ID Cap For Refractors DayStar Energy Rejection Filters reduce the heat load on your filter assembly by absorbing or reflecting UV and or I light and transmitting light in the desired visual spectrum. These filters are sometimes Red or Yellow glass, or dielectric IR and UV, but pass light in the desired visual spectrum. The ERF can also serve as an aperture mask to accomplish a straight angle of incidence for light
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