Download ObsGuide. This document gives detailed instructions on how to use the telescopes. Please refer to it before and when you are using the telescopes.
Stellarium: free open-source planetarium software Ė useful for checking what youíll be able to see on a given night and planning your observing sessions.
Sky and Telescope Observing News: find out about the latest bright comets and supernovae, storms on planets and other events that planetarium software probably wonít show you.
Heavens Above: find out when the International Space Station and Iridium satellite flares will be visible.
Clear Outside: weather forecast for Cambridge, including cloud cover (remember that no forecast is perfect!)
Institute of Astronomy all-sky camera: see what the weather is like right now at the observatory without having to go out and check.
Satellite cloud images: see which way the cloud is going and whether itís breaking up or continuing to form (note that low cloud is not visible on infrared images).