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Open Box Astrodon Gen II 1.25" LRGB-I Filters -UT-11908 -SOLD-

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  • $425.00
  • Regular price $475.00

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  • This is an open box item in like new condition


Open Box Astrodon Gen II 1.25" LRGB-I Filters -UT-11908 -SOLD-

UT-11908: The Astrodon 1.25" LRGB I-Series Gen-II was designed to approximately equalize the flux of Interline CCD detectors, including compensation for the solar photon flux. These filters compensate for the lower red response of these Interline detectors affecting the design of the Green and Red filters. 

  • Set includes Luminance (NIR/UV-blocked colorless), Red, Green and Blue filters
  • 1.25" diameter
  • 3 +/-0.025 mm single 1/4 wave fused silica substrate before coating
  • 30 arcsec parallelism
  • ~1:1:1 color combine weights for G2V white-point for Kodak Interline detectors
  • Equal RGB exposures and one dark time
  • Better color separation (see spectra)
  • Better color rendition for galaxies based upon color theory
  • Significant reflection and star halo reduction
  • Spectral "gap" between green and red filters to reduce the effects of light pollution
  • Highest efficiency blue filter with less UV
  • Correct "teal" OIII color for planetary nebula (OIII signal >97% in blue and green)
  • Parfocal with Astrodon's high-performance narrowband and near-IR Luminance filters
  • Ultra-hard and durable sputtered coatings coated to the edge of each filter


ConditionLike New
Warranty90 Day Covered By OPT