Skip to content
FAQ Shipping & Returns Bulk Orders, B2B, GOV, & EDU First Responder & Military/Veteran Discounts Contact Us

Energy Rejection Filters

  • DayStar Energy Rejection-Refractor 2" UV/IR Filter For Refractor
    $119.00 - $175.00
    $119.00 - $175.00
    $119.00 - $175.00
    $119.00

    DayStar UV/IR ERF Filter for Refractor

    DayStar
    In stock

    DayStar UV/IR  Energy Rejection Filter - for Refractor Telescope - available in 1.25" or 2" Presenting the DayStar Energy Rejection-Refractor 2" ...

    View full details
    $119.00 - $175.00
    $119.00 - $175.00
    $119.00 - $175.00
    $119.00
  • DayStar 125mm Off-Axis ERF with 460mm Inside Diameter Cap
    Special Order
    $1,673.00 - $1,673.00
    $1,673.00
    $1,673.00 - $1,673.00
    $1,673.00

    DayStar 125mm Off-Axis ERF with 460mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar Off-Axis 125mm Energy Rejection Filter with 460mm Inside Diameter Cap - for 16-inch SCT - E-460F125 The DayStar 125mm Off-Axis Energy Rejec...

    View full details
    $1,673.00 - $1,673.00
    $1,673.00
    $1,673.00 - $1,673.00
    $1,673.00
    Special Order
  • DayStar 115mm Off-Axis ERF with 410mm Inside Diameter Cap
    Special Order
    $1,673.00 - $1,673.00
    $1,673.00
    $1,673.00 - $1,673.00
    $1,673.00

    DayStar 115mm Off-Axis ERF with 410mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 115mm Off-Axis Energy Rejection Filter with 410mm Inside Diameter Cap - for 14-inch SCT - E-410F115 Meet the DayStar 115mm Off-Axis Energy ...

    View full details
    $1,673.00 - $1,673.00
    $1,673.00
    $1,673.00 - $1,673.00
    $1,673.00
    Special Order
  • DayStar 100mm Off-Axis ERF with 356mm Inside Diameter Cap
    Special Order
    $1,253.00 - $1,253.00
    $1,253.00
    $1,253.00 - $1,253.00
    $1,253.00

    DayStar 100mm Off-Axis ERF with 356mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Off-Axis Energy Rejection Filter with 356mm Inside Diameter Cap - for 12-inch SCT - E-356F100 Introducing the DayStar 100mm Off-Axis ...

    View full details
    $1,253.00 - $1,253.00
    $1,253.00
    $1,253.00 - $1,253.00
    $1,253.00
    Special Order
  • DayStar 90mm Off-Axis ERF with 325mm Inside Diameter Cap
    Special Order
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00

    DayStar 90mm Off-Axis ERF with 325mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 90mm Off-Axis Energy Rejection Filter with 325mm Inside Diameter Cap - for 11-inch SCT - E-325F90 Discover the DayStar 90mm Off-Axis Energy...

    View full details
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00
    Special Order
  • DayStar 80mm Off-Axis ERF with 311mm Inside Diameter Cap
    Special Order
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00

    DayStar 80mm Off-Axis ERF with 311mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Off-Axis Energy Rejection Filter with 311mm Inside Diameter Cap - for 10-inch SCT - E-281F80 The DayStar 80mm Off-Axis Energy Rejectio...

    View full details
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00
    Special Order
  • DayStar 80mm Off-Axis ERF with 281mm Inside Diameter Cap
    Special Order
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00

    DayStar 80mm Off-Axis ERF with 281mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Off-Axis Energy Rejection Filter with 281mm Inside Diameter Cap - for 9.25-inch SCT - E-281F80 The DayStar 80mm Off-Axis ERF with 281 ...

    View full details
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00
    Special Order
  • DayStar 63mm Off-Axis ERF with 244mm Inside Diameter Cap
    Special Order
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00

    DayStar 63mm Off-Axis ERF with 244mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 63mm Off-Axis Energy Rejection Filter with 244mm Inside Diameter Cap - for 8-inch SCT - E-244F63 Introducing the DayStar 63mm Off-Axis Ener...

    View full details
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00
    Special Order
  • DayStar 150mm ERF with 220mm Inside Diameter Cap
    Special Order
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00

    DayStar 150mm ERF with 220mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 220mm Inside Diameter Cap - For Refractor - E-220N150 The DayStar 150mm Energy Rejection Filter with a 2...

    View full details
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00
    Special Order
  • DayStar 150mm ERF with 210mm Inside Diameter Cap
    Special Order
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00

    DayStar 150mm ERF with 210mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 210mm Inside Diameter Cap - For Refractor - E-210N150 Meet the DayStar 150mm Energy Rejection Filter wit...

    View full details
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00
    Special Order
  • DayStar 150mm ERF with 200mm Inside Diameter Cap
    Special Order
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00

    DayStar 150mm ERF with 200mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 200mm Inside Diameter Cap - For Refractor - E-200N150 Presenting the DayStar 150mm Energy Rejection Filt...

    View full details
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00
    Special Order
  • DayStar 150mm ERF with 190mm Inside Diameter Cap
    Special Order
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00

    DayStar 150mm ERF with 190mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 190mm Inside Diameter Cap - For Refractor - E-190N150 Discover the DayStar 150mm Energy Rejection Filter...

    View full details
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00
    Special Order
  • DayStar 130mm ERF with 190mm Inside Diameter Cap
    Special Order
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00

    DayStar 130mm ERF with 190mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 190mm Inside Diameter Cap - For Refractor - E-190N130 Presenting the DayStar 130mm Energy Rejection Filt...

    View full details
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00
    Special Order
  • DayStar 150mm ERF with 180mm Inside Diameter Cap
    Special Order
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00

    DayStar 150mm ERF with 180mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 180mm Inside Diameter Cap - For Refractor - E-180N150 Introducing the DayStar 150mm Solar Energy Rejecti...

    View full details
    $2,303.00 - $2,303.00
    $2,303.00
    $2,303.00 - $2,303.00
    $2,303.00
    Special Order
  • DayStar 130mm ERF with 180mm Inside Diameter Cap
    Special Order
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00

    DayStar 130mm ERF with 180mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 180mm Inside Diameter Cap - For Refractor - E-180N130 The DayStar 130mm Energy Rejection Filter featurin...

    View full details
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00
    Special Order
  • DayStar 130mm ERF with 170mm Inside Diameter Cap
    Special Order
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00

    DayStar 130mm ERF with 170mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 170mm Inside Diameter Cap - For Refractor - E-170N130 Discover the DayStar 130mm Energy Rejection Filter...

    View full details
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00
    Special Order
  • DayStar 130mm ERF with 160mm Inside Diameter Cap
    Special Order
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00

    DayStar 130mm ERF with 160mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 160mm Inside Diameter Cap - For Refractor - E-160N130 The DayStar 130mm Energy Rejection Filter featurin...

    View full details
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00
    Special Order
  • DayStar 130mm ERF with 150mm Inside Diameter Cap
    Special Order
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00

    DayStar 130mm ERF with 150mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 150mm Inside Diameter Cap - For Refractor - E-150N130 Presenting the DayStar 130mm Energy Rejection Filt...

    View full details
    $1,393.00 - $1,393.00
    $1,393.00
    $1,393.00 - $1,393.00
    $1,393.00
    Special Order
  • DayStar 100mm ERF with 150mm Inside Diameter Cap
    Special Order
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00

    DayStar 100mm ERF with 150mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 150mm Inside Diameter Cap - For Refractor - E-150N100 Introducing the DayStar 100mm Energy Rejection Fil...

    View full details
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00
    Special Order
  • DayStar 100mm ERF with 140mm Inside Diameter Cap
    Special Order
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00

    DayStar 100mm ERF with 140mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 140mm Inside Diameter Cap - For Refractor - E-140N100 The DayStar 100mm Energy Rejection Filter featurin...

    View full details
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00
    Special Order
  • DayStar 100mm ERF with 130mm Inside Diameter Cap
    Special Order
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00

    DayStar 100mm ERF with 130mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 130mm Inside Diameter Cap - For Refractor - E-130N100 Meticulously crafted DayStar 100mm Energy Rejectio...

    View full details
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00
    Special Order
  • DayStar 100mm ERF with 120mm Inside Diameter Cap
    Special Order
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00

    DayStar 100mm ERF with 120mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 120mm Inside Diameter Cap - for Refractors - E-120N100 Presenting the DayStar 100mm Energy Rejection Fil...

    View full details
    $973.00 - $973.00
    $973.00
    $973.00 - $973.00
    $973.00
    Special Order
  • DayStar 80mm ERF with 120mm Inside Diameter Cap
    Special Order
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00

    DayStar 80mm ERF with 120mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Energy Rejection Filter with 120mm Inside Diameter Cap - For Refractor - E-120N80 The DayStar 80mm Energy Rejection Filter featuring a...

    View full details
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00
    Special Order
  • DayStar 80mm ERF with 110mm Inside Diameter Cap Set
    DayStar Energy Rejection-Refractor 80mm and 110mm ID Cap - For Refractor
    Special Order
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00

    DayStar 80mm ERF with 110mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Energy Rejection Filter with 110mm Inside Diameter Cap - For Refractor - E-110N80 Introducing the DayStar Energy Rejection-Refractor 8...

    View full details
    $770.00 - $770.00
    $770.00
    $770.00 - $770.00
    $770.00
    Special Order