Daystar ERF 75mm with 110mm Cap - E-110N75 Dew Shields By Size_6” All Sky Survey Images from

All Sky Survey Images from Planck

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so don’t risk being without an Astrozap Dew Shield

Starry Night Pro Plus 7 makes it so easy to control your telescope and access research-grade features and databases

larger aperture configurations use a barlow

Daystar ERF 75mm with 110mm Cap - E-110N75 Dew Shields By Size_6” All Sky Survey Images from75mm ERF Glass, Cell & 110mm ID Cap For Refractors Discontinued 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