Used ZWO LRGB Filters (4 pieces) - 31mm - unmounted


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  • $99.95
  • Regular price $169.00

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Not Returnable Please note that used items are not returnable.

This is a set of 4 31mm LRGB filters from ZWO that are unmounted.  These are for use in filter wheels.  These are in excellent condition, completely clean, in their original jewel box and paper wrapping.  




ZWO LRGB 31mm Filter Set

Perfect for the ZWO EFWMini or EFW8, and will work fine in any filter wheel that accepts 31mm unmounted filters! This affordable imaging filter set includes four 31 mm filters: Luminance (UV-IR Cut), Red, Green, and Blue. At passband, each filter delivers over 92% light transmission, and has precision off-band blocking and a 700-1100nm infrared wavelength cut-off. There is a spectral gap in these filters that will minimize the effects of light pollution.

The ZWO 31mm LRGB filters are fine-optically polished to reach an accuracy of 1/4 wave. Their performance is further enhanced by multiple layers of anti-reflection coatings.

Deep Sky Broadband CCD Filters: Luminance, Red, Green, and Blue

The LRGB telescope filter Kit is designed for maximum contrast and with extremely high gradients for clear differentiation of colors of light.

This set divides the spectrum into its components:  red, green, blue and luminance.

Main Use and Performance

  • Works well with debayered monochrome CCD cameras
  • Suitable for deep sky and planetary CCD imaging
  • RGB-imaging allows equal weighting factors for each channel, which is very important for automated imaging.
  • The ideal raw material for image processing in the sRGB color space is available with LRGB filter set and a mono CCD camera. 



Product specification
SKU Number ZWO-LRGB-31
Model Number LRGB-31
Single Filter, Set, or Accessory Filter Set
Filter Type RGB Sets
Filter Size 31mm
Filter Shape Round
Filter Insert Style Drop-In