The Imaging Source and the BBC magazine Sky at Night have teamed up to bring you a competition in which you can win one of three DMK astronomy cameras.

The competition was published in the September 2007 issue of the magazine - on newsstands throughout the UK, Continental Europe, USA and Australia as of August 21, 2007.

The main prize is one DMK 41AF02.AS monochrome camera with a resolution of 1280×960, 15 frames per second and an exposure time of up to 60 minutes.

The runner-up prizes are two DMK 21AF04.AS monochrome cameras with a resolution of 640×480, 60 frames per second and an exposure time of up to 60 minutes.

All cameras deploy extremely low noise CCDs from Sony®.

To be in with a chance of winning, simply read Sky at Night and answer the following question:

What is the maximum exposure time of the DMK 41AF02.AS monochrome camera?

Take a look at the product overview page to find out the answer and enter here.

Good luck