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Astrodon Luminance Gen2 UV/NIR Blocking Filter - 49.7 mm Round Unmounted - L2-50R

SKU: ASD-L2-50R

Regularly stocked item that is on order with the manufacturer and on its way to our warehouse. Expected to arrive within 5-10 business days.

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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 49.7 mm Round Gen2 UV/NIR Blocked Luminance Filter



Included with Astrodon's E-Series as well as I-Series Tru-Balance LRGB filter sets, this 49.7 mm Generation 2 Luminance "L" Filter is parfocal with all Astrodon LRGB and Narrowband filters. Blocking both UV and NIR, this colorless filter offers 97% minimum transmission for 400 nm to 700 nm wavelengths. 50% transmission at 395 nm with blocking above 705 nm.



Astrodon 49.7 mm Gen2 Luminance Filter Specifications



  • Colorless 49.7 mm round unmounted UV/NIR blocking Luminance filter identical to the Luminance filter included with the 49.7 mm round 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
Description
Description

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 49.7 mm Round Gen2 UV/NIR Blocked Luminance Filter

Included with Astrodon's E-Series as well as I-Series Tru-Balance LRGB filter sets, this 49.7 mm Generation 2 Luminance "L" Filter is parfocal with all Astrodon LRGB and Narrowband filters. Blocking both UV and NIR, this colorless filter offers 97% minimum transmission for 400 nm to 700 nm wavelengths. 50% transmission at 395 nm with blocking above 705 nm.

Astrodon 49.7 mm Gen2 Luminance Filter Specifications

  • Colorless 49.7 mm round unmounted UV/NIR blocking Luminance filter identical to the Luminance filter included with the 49.7 mm round 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
Specifications
Specifications
Model Number L2-50R
Single Filter, Set, or Accessory Single Filter
Filter Type UV/IR/Luminance
Filter Size 50 mm
Filter Shape Round
Filter Insert Style Drop-In
Warranty Astrodon 5 Years
What's in the Box?
What's in the Box?
  • Luminance Gen2 UV/NIR Blocking Filter
  • Protective Filter Case
  • Astrodon 50 mm Round Unmounted Luminance Gen2 UV/NIR Block Filter
  • Astrodon Generation 2 E-Series LRGB Filter Transmission Data
  • Astrodon Generation 2 I-Series LRGB Filter Transmission Data
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