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fully baffled telecentric 4
Updated Model
and city night lights on dark side (Earth only)
Includes mounting rings with Vixen dovetail
ERFs are custom machined on a one-off basis and so the accuracy of this measurement is very important
Daystar Off Axis ERF 90mm with 325mm Cap - E-325F90 Accessories_Wedge Plates fully baffled telecentric 490mm ERF Glass & 325mm Cap Off Axis For SCT Daystar Energy Rejection Filters (ERF) reduce the heat load on your filter and optics assembly by absorbing reflecting UltraViolet and or Infrared light while 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
US$ 1575.00
US$ 550.00
US$ 105.10
US$ 1575.00