DayStar Filters 75mm-Aperture Energy Rejection Filter (110mm Cap Diameter)

DayStar Filters 75mm-Aperture Energy Rejection Filter (110mm Cap Diameter)

DayStar Filters 75mm-Aperture Energy Rejection Filter (110mm Cap Diameter)

B&H # DAE110N75 MFR # E-110N75
DayStar Filters 75mm-Aperture Energy Rejection Filter (110mm Cap Diameter)

DayStar Filters 75mm-Aperture Energy Rejection Filter (110mm Cap Diameter)

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Expected availability: 7-14 business days

Product Highlights

  • 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
  • Inside Diameter of Cap: 11 cm (4.33")
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SAFETY FIRST: Observing the Sun without the proper protection may result in serious personal injury, including permanent eye damage and blindness, and/or damage to equipment. Never point an optic at the sun without an approved solar filter on the front of the optic. For direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder, ensure your filter is ISO 12312-2 (also written as ISO 12312-2:2015) certified. Never use photographic neutral density filters for direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder.

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  • 1Description

Daystar Filters' 75mm-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.

Choose the ERF aperture size to approximately match your refractor's objective aperture or Maksutov corrector plate. Select the correct filter cap size by measuring the outside diameter of the OTA's dew shield and choose the ERF with the smallest inside diameter that will fit over the dew shield. A set of screws is included to secure the ERF into place. This ERF's cap has an inside diameter of 11 cm (4.33").

UPC: 724696425434
In the Box
DayStar Filters 75mm-Aperture Energy Rejection Filter (110mm Cap Diameter)
  • 3 x Set Screws
  • Limited 10-Year Warranty
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