The September 2008 issue of Britain's best selling astronomy magazine is now available.

Astronomy is about exploring the Universe, and a large part of exploring is making maps of where we've been. Our in-depth articles focus on cartographers of the night sky, charting the new and unknown frontiers of planets, moons, the Galaxy and Universe, with a guest article from Ralph Lorenz who helped lift the veil on Saturn's smog-enshrouded moon Titan.

Visit the 'children of the lens' with Keith Cooper's article on gravitational lensing galaxies, giant magnifying glasses of the Universe, and celebrate the fortieth anniversary of the legacy of the Crayford Eyepiece Mount with inventor John Wall. Neil English explains how to improve your telescope just by choosing the right mount, and Ian Morison tackles the the question of 'how clearly can I see?' After that, kick back and enjoy some postcards from Mars with the latest incredible array of images from NASA's Mars Reconnaissance Orbiter.

All that, plus the latest news, reviews and society action, as well as the UK's biggest and best night sky guide, from your favourite astronomy magazine.