The View From Here

Few can be unimpressed by the quality of pictures coming back from the NASA Spirit Mars rover. But did you know Spirit only has a 1 megapixel digital camera? The CCD is just 1,000x1,000 pixels. When you compare this to the 6 megapixel cameras readily available in high street camera shops, just how does Spirit get such good pics? The answer is in the lens. In any digital camera the lens is one of the major determinants of picture quality. Most consumer digital cameras have relatively cheap lenses. Stick on a top notch lens and even the most modest of cameras can take better pics. True, Spirit also uses a CCD with a higher spec than those used in your average Sony Cybershot but it's still way below the maximum resolution of consumer cameras. The secret of Spirit's success are its lenses. If you're buying yourself a digital camera in the January sales then go for one that accepts replacement lenses. You might not be able to afford the kinds of hardware NASA uses but you can still improve the quality of your pictures by carefully selecting the lenses you can afford.

Europe shows that it's not just the USA that can wow us with stunning images (and serious science) as the European Space Agency's Mars Express satellite beams back its first full colour close-up of the surface of the red planet. The picture is of Valles Marineris, the Grand Canyon of Mars, a region of the planet thought to have been carved out by flowing water. You can keep track of the latest images from Mars Express by visiting the ESA's image gallery. So right now we have both NASA and ESA exploring Mars, reinforcing the need for a manned mission to Mars to be a collaboration rather than a race.