ZWO 31mm CCD LRGB Filter Set Optimised for 1600MM Cameras Ktec Telescopes

ZWO 31mm CCD LRGB Filter Set Optimised for 1600MM Cameras

Zwo

  • €189,95
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ZWO 31mm CCD LRGB Filter Set Optimised for 1600MM Cameras

This ZWO 31mm CCD LRGB Filter Set Optimised for 1600MM Cameras (3 Color Filters + IR Cut Filter) is specially designed for the ZWO ASI1600 cameras.

The new ZWO LRGB Filters  are designed to approximately equalize the flux of the ASI1600 monochrome sensor.

It offers better transmission, better coating, better color separation and also with a clever design, there is a small spectral gap that helps to reduce the effect of light pollution.

 

The RGB colors combined flux 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
  • Highly parfocal – thickness 1.9+/-0.03 mm

 

Please note, 31mm filters are not the same as 1.25" filters. 1.25" filters have a metal cell that provides an approximately 24mm clear aperture , whilst 31mm filters are usually glass-only filters without metal cell and provide about 29mm clear aperture (dependent only on the actual size of the hole on the filter wheel). 31mm filters are usually necessary for faster (small f-ratio) telescopes when used with i.e. ZOW ASI1600MM-C cooled monochrome cameras.

 

**Never use any eyepiece filter for solar observation without objective front filter!

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