ZWO LRGB 31mm Premium Filter Set

Article number: ZWO-LGRB31
Availability: Order Now!
Delivery time: Regularly stocked item that is on order with the manufacturer and on its way to our warehouse. Expected to arrive within 7-14 business days.

The ZWO LRGB  31mm filter has better transmission, better coating,  better color separation

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 2 mm

Technical Parameter:

Name: ZWO 31mm LRGB filter (4 filters)

Size: D=31mm

Thickness: 2mm

here are the detailed photos





How to judge the positive and negative?

It is a little bit hard to judge the LRGB filters. Please watch the picture below carefully.

LRGB judge

Transmission Curve


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