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Astrodon Luminance Gen2 UV/NIR Blocking Filter - 36 mm Round Unmounted - L2-36R

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About Astrodon UV Blocking Filters

Astrodon filters are high performing, durable filters that provide significant aid for astrophotography and research pursuits. Each filter is constructed using a highly innovative process with a single high quality 3 mm thick fused silica substrate and full hard oxide sputtered coatings. Astrodon UV blocking filters come in two different varieties - a Luminance "L" filter that blocks both UV and NIR, and a Clear "C" filter that only blocks UV. The former is identical to the Luminance filter included with the both the E-Series and I-Series Astrodon LRGB filter sets. This filter provides at least 97% transmission between 400 nm and 700 nm, while the Clear filter provides at least 97% transmission up to 1000 nm.

Astrodon 36 mm Gen2 UV/NIR Blocked Luminance Filter

This Astrodon 36 mm Near-Infrared Gen2 Luminance Filter, included with both the E-Series and I-Series Tru-Balance LRGB filter sets, transmits over 97% of light between 400 nm and 700 nm with 50% transmission at 395 nm and blocking over 705 nm. Parfocal with all LRGB and Narrowband filters from Astrodon, this Luminance "L" filter blocks both UV and NIR.

Astrodon 36 mm Gen2 Luminance Filter Specifications

  • Colorless 36 mm round unmounted UV/NIR blocking Luminance filter identical to the Luminance filter included with the 36 mm I-Series and E-Series LRGB filter sets
  • Provides 97% or more transmittance between 400 and 700 nm
  • 395 nm cut-on (50% transmission at 395 nm); blocked above 705 nm
  • 3 +/-0.025 mm single 1/4 wave fused silica substrate before coating
  • 30 arcsecond parallelism
  • Approximately equal color combine weights for G2V white-point for both Full Frame (E) and Interline (I) detectors
  • Improved color separation (see transmission spectra)
  • Improved color rendition for color theory based galaxies
  • Virtually eliminates reflections and star halos
  • Features strong, ultra-hard edge-to-edge sputtered coatings
  • Proudly manufactured in the USA