Get outside and see some stars folks – “Ground-based astronomy could be impossible in 40 years because of pollution from aircraft exhaust trails and climate change, an expert says. Aircraft condensation trails – known as contrails – can dissipate, becoming indistinguishable from other clouds. If trends in cheap air travel continue, says Professor Gerry Gilmore, the era of ground astronomy may come to an end much earlier than most had predicted.” – Link.
Related: Webcam Telescope by Dennison Bertram in DIY: Imaging. Video from still camera zoom. Forget jerky teleconferences; put a real lens on a 90s era webcam and you’ve got something. MAKE 02 – Page 133.