How it works
Astronomers use a mono (black and white) camera with filters (eg Ha, Sii, Oiii or R, G, B) to capture high resolution images even in light polluted areas.
By combining these filtered images as R/G/B Channels, a coloured image is produced. This tool allows you to upload your black and white source images, then shows you every possible permutation for the various combinations. It is not intended as a replacement for colour combination in post processing programs such as Photoshop or PixInsight, but as a quick preview tool to see how the various combinations look.
If you would like to learn more about narrowband imaging, contact us. Or browse our range of narrowband filters and accessories.
Upload 3 new source images
- Only works with JPG images - Ideal size 1024px wide
< 2mb, No spaces in filenames
- Make sure your source images are greyscale, not colour
- Make sure your source images are aligned
- You can also load R/G/B filtered images instead of Ha/Sii/Oiii to try combinations
HUBBLE PALETTE : The Hubble Space Telescope is capable of imaging in very narrow wavelengths of light using various filters. This enables astrophotography to reveal details of objects in space that the human eye cannot easily see, if at all. Filters are commonly mapped with the SII, Ha and OIII data respectively to the R, G and B channels.
CFHT PALETTE : Another is the Canada France Hawaii Telescope (CFHT) palette, where the Ha emission is more naturally mapped to red and OIII to green, and SII is mapped to blue.