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Celestron NexStar 5i/8i
SkyWatcher mounts with SynScan controllers
Dedicated design offers Quantum control completely built-in for easy set-up and operation
snouts and Daystar Sodium D line filter into one simple assembly
The Daystar Quark filters perform the best with F/4 - F/9 refractors
Daystar ERF 80mm with 110mm Cap - E-110N80 F-Ratio_F/6 - F/8.9 Celestron NexStar 5i/8i80mm ERF Glass, Cell & 110mm 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 entering
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