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Aluminum 152mm Achromatic Doublet Refractor
which also serves as the illuminator's on/off switch
36" to the center of the mounting bracket Tripod open
then the Explore Scientific Carbon Fiber ED127 Triplet APO is definitely worth considering
Daystar ERF 150mm with 210mm Cap - E-210N150 Dew Shields By Size_5” Aluminum 152mm Achromatic Doublet Refractor150mm ERF Glass, Cell & 210mm 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