Lunt Solar Systems 75mm Energy Rejection Filter

Lunt Solar Systems 75mm Energy Rejection Filter

Lunt Solar Systems 75mm Energy Rejection Filter

B&H # LUHQDLIR75 MFR # LS75ERF
Lunt Solar Systems 75mm Energy Rejection Filter

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Product Highlights

  • Schott RG630 Optical Filter Glass
  • Diffraction-Limited with IR Cut
  • <1/4 Wave T Wavefront
  • Dielectric IR-Blocking Coatings
  • Broadband Anti-Reflection Coatings
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To ensure that you receive this item in time for the Solar Eclipse on Monday, 8/21/17, the only available shipping option is Solar Eclipse Express 1 Day.

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.

  • 1Description

For the experienced viewer who wants to build their own solar scope, Lunt Solar Systems offers this unmounted Energy Rejection Filter (ERF) for use in H-alpha solar filters. Made of Schott RG630 optical filter glass, it is diffraction-limited with IR Cut and a <1/4 wave T wavefront. One side features dielectric IR-blocking coatings while the second side has broadband anti-reflection coatings.

Material Schott RG630 optical filter glass
Diameter 80mm
Aperture 75mm
Thickness 3.5 mm
Packaging Info
Package Weight 0.155 lb
Box Dimensions (LxWxH) 4.2 x 3.2 x 0.6"
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