DAYSTAR ENERGY REJECTION FILTER FOR REFRACTORS Electronic adapter Dark frame calibrated

Dark frame calibrated

The HPS mounts are able to operate up to 30° beyond the meridian

25" and 2" barrel) and it is suitable for Barlow lenses and diagonals

The GEM28 is equipped with the latest advanced GOTONOVA® GOTO technology

The optional Sky-Watcher f/5 coma corrector effectively eliminates coma

DAYSTAR ENERGY REJECTION FILTER FOR REFRACTORS Electronic adapter Dark frame calibratedDayStar 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 the filter. DayStar filter assemblies operate best