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Key Features
- For Use on Refractor and Maksutov OTAs
- Reduces Heat Load on Filter Assembly
- Absorbs or Reflects UV and/or IR Light
- For H-alpha, Sodium, Helium D3 Filters
Daystar Filters' 130mm-Aperture Energy Rejection Filter is designed for on-axis use with Refractor and Maksutov-style OTAs to reduce the heat load on your filter assembly by absorbing or reflecting UV and/or IR light while transmitting light in the desired spectrum. This ERF can be used with H-alpha, Sodium, and Helium D3 solar filters, but is incompatible with calcium wavelengths.
More DetailsSpecial Order
Expected availability: 2-4 Weeks
$995.00
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