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Optolong RGB filters set 31,8mm is specially designed for color astrophotos using monochrome CCD cameras: in fact they offer a higher transmittance compared to traditional filters and a better defined transmitted band. These filters are parfocal and are manufactured with the highest quality standard: so when you change the filter to record another picture, you will not have to change the focus point of your telescope (they are perfect for use with filter wheels).
Photographic use: Optolong RGB filters set 31,8mm is designed to allow you to record color images with monochrome CCD cameras. In fact you can take a picture for each different filter and use a special processing software (indicating that each filter corresponds to one of the R, G and B channels) to obtain the color image (trichromy technique).
Set RGB filters for trichromy
Let to record color images with mono CCD cameras
Filters are parafocal
Transmittance higher than 95%
Anti-reflective multi-layer coating to not generate ghost images
Quality substrate not to introduce aberrations in the images
Available in 2 versions: 31.8mm (1.25") and 50.8mm (2") diameter
How to use the filters:
Our filters are available in 2 diameters: 31.8mm and 50.8mm. These standards are commonly used by telescopes and their accessories. For example, depending on their function, they can be used with a CCD ora A DSLR camera (using appropriate photo adapters), but also screwed to optical accessories such as eyepieces or diagonals. Warning: 31.8mm filters do not work with 50.8mm diameter accessories and vice versa (unless there are special adapters). When you choose the version of your filter, be careful to choose the diameter compatible with your equipment.