ZWO LRGB 2" Filter Set - Refurbished
About This ZWO Refurbished Product
This item has been professionally refurbished by ZWO, and carries a ZWO 2 Year Warranty which covers repairs in that period. The warranty does not cover replacements. This professionally refurbished item is fully functional. It includes the hardware and accessories, or suitable equivalents, that would have been included with a new item. The item you receive may or may not have factory packaging. This item is in Like New cosmetic condition. Images shown are of new product. This item is eligible for our standard 30 day return policy.
ZWO LRGB 2" Filter Set
ZWO's 2" LRGB set comes complete with 2" Luminance (UV-IR Cut), Red, Green, and Blue filters. ZWO's filter design boasts excellent 92% transmission at passband, great optical coatings, and good color separation.
The LRGB filters have a mechanical thickness of 5mm, with an additional 2.5mm added for the thread. The optical thickness measures in at 1.85mm. Each filter is more parfocal with a thickness of 1.9+/-0.03 mm. As for the thread, this LRGB filter set comes with a M48x0.75 thread on each filter.
Each filter is fine-optically polished to reach an accuracy of 1/4 wave and is equipped with anti-reflection coatings. With the infrared wavelength, there is a 700-1100nm cut off. ZWO has included a spectral "gap" to minimize the effect of light pollution. Additionally, the ZWO LRGB filters have precision off-brand blocking.