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3-Colour Imaging

Name : 3-Colour Imaging

Description :

The '3-Colour Imaging' workshop is a self-contained workshop that introduces students to the idea of creating 3-colour images using the Liverpool Telescope, and can be adapted to suit all secondary ages and abilities. Using the same techniques employed by professional astro-photographers, students will quickly learn how to use LTImage to combine images taken through different filters, in order to generate a representative colour image of the object being observed. The workshop brings together ICT, Physics and a little Art to make a colourful hour of discovery.

Age Range : 11 - 18 years

Workshop Time : 1 hour

Image of the Trifid Nebula (M20)


For this workshop you will need to download an introductory PowerPoint presentation, a step-by-step guide and/or video guide, and a set of image data that can be analysed using LTImage.

Introductory Presentation : MS PowerPoint [7.2 MB]

Introductory Presentation with Notes : PDF Format [6.9 MB]

3-colour Step-by-Step Guide : MS Word Format [1.6 MB] or PDF Format [1.8 MB]

Note: You may also find it useful to download the
3-colour video guide
[MP4 Format - 5.4 MB]

Data Files :

The following FITS files contain examples of images that can be combined using LTImage to make 3-colour pictures. They correspond to tasks detailed in the PowerPoint presentation.

Images of Terrestrial Objects to Get You Started   
Image of Ferry ferry-red.fits ferry-green.fits ferry-blue.fits
Image of York Castle yorkcastle-red.fits yorkcastle-green.fits yorkcastle-blue.fits
Images of Astronomical Objects from the Liverpool Telescope
Image of M1 (Crab Nebula) m1-red.fits m1-green.fits m1-blue.fits
Images Obtained by Schools, Teachers and Students
Image of NGC 2776 (Spiral Galaxy)
 - taken by Moulton School
2344E000.fits 2344E001.fits 2344E002.fits
Image of M57 (Nebula)
 - taken by Formby High School
2589I000.fits 2589I001.fits 2589I002.fits
Image of M27 (Nebula)
 - taken by Royal Observatory Greenwich (student)
3056H000.fits 3056H001.fits 3056H002.fits
Image of M51 (Spiral Galaxy)
 - taken by The Brooksbank School
2799D000.fits 2799D001.fits 2799D002.fits
Image of the Month Archive
 - a number of these are 3-colour images
You can download the FITS files from the archive directly. Just click on the link on the left.


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, it will not be possible to register with the website, 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.