ZWO Optical

ZWO 2" LRGB Filters

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Product Overview

The new ZWO 2? LRGB Filters has good performance in transmission, also it has good coating, good color separation.

Technical Parameter:

Name: ZWO 2? LRGB Filters (4 filters)

Size: 2?

Thickness: 5 mm+2.5mm(thread)

Thread: M48*0.75

Thickness: 1.85mm

The RGB color combine weights will be approximately 1:1:1

  • Fine-optically polished to ensure accurate 1/4 wavefront
  • more than 92% transmission at passband
  • Infrared wavelength 700-1100nm cut-off
  • Precision off-band blocking
  • Multi-layers anti-reflection coating
  • Small spectral “gap” to minimize effect of light pollution
  • More parfocal – thickness 1.9+/-0.03 mm


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