Colour the universe

Why is the Sun green in a photo taken with a UV camera? We can’t actually see UV light, so the colour of the photo was just chosen to be green!

In this assignment, you can choose any colour scale for an image of space taken to capture a specific wavelength of light. This activity is about making space images more interesting to look at! Which colours make the image look the most interesting?

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Keywords: colour, light, wavelength

Learning about colours in astro photography

In astrophotography, colours are treated in different ways – telescopes generally do not take colour pictures, but use special filters to capture light in particular parts of the optical spectrum (e.g. red light only). This interactive app from the Faulkes Telescope project will show you how colour images are made using different filters, combining them to make various types of “colour image”.

Access online telescopes

Gain access to the Faulkes Telescope project, where teachers and students can access a global network of telescopes. Both live- and queue-based observations are available.

Choose what you want to observe and get your own pictures of planets, galaxies and nebulae.

Access to the Faulkes Telescope project is available for teachers and students in Denmark, Finland, Norway and Latvia through Online Observatory – do not miss out on this opportunity!

The sky above us

The rotation of the Earth is investigated by observing the length of a toy figure’s shadow in the course of a day.

As an extended task, you can use the Stellarium software to investigate the movements of the Sun. Alternatively, the students can make real observations of the position of the Sun in the sky in the course of a year (the analemma pattern).

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Keywords: sky, diurnal motion, daily motion, shadow, Sun, analemma