Daystar ERF 130mm with 180mm Cap - E-180N130 Solar Filter Maksutov (if sufficient focus travel)

Maksutov (if sufficient focus travel)

Daystar Solar Scout 80mm Prominence Features:

Daystar Sodium D Quark

999 BCE to 99

Daystar ERF 130mm with 180mm Cap - E-180N130 Solar Filter Maksutov (if sufficient focus travel)130mm ERF Glass, Cell & 180mm 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