ZWO LRGB 31mm Filters

ZWO LRGB 31mm Filters

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.

Transmission Curve