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3-Colour Imaging on the Liverpool Telescope

3-Colour LT image of M27

By combining images of an object taken through three different filters, we can create colour images. The NSO's Go Observing system and LTImage image processing software now have options to create such images of nebulae (glowing clouds of gas) and galaxies.

In order to guide you through the process of creating colour images using NSO resources, we have created a practical workshop (with informative PowerPoint Presentation) and two screencast movies. Please click on the following links to access these:

View the Go Observing 3-colour screencast (Task 2)
View the LTImage 3-colour screencast (Task 3)
Try out the 3-colour practical workshop
Submit a 3-colour Observation

Note that usually, colour images are created from RGB (Red, Green and Blue) images, as happens with televisions and monitors; however, because the telescope's filters are not centred exactly on the Red, Green and Blue regions of the spectrum, the images produced by LTImage will only be approximations of what the human eye will see, albeit pretty good ones if you do it well.


Please note that over the weekend of the 26-29th May 2017 we will be switching over to our brand new website - during this time there may be periods where the site is difficult to access, and users will be unable to request observations from the telescope. Please bear with us during this time. All should be back up and running by the 30th May 2017.