From Silver to Silicon
Observing the Universe through the eyepiece of a telescope is one thing, but recording the observations for posterity is something quite different. Originally astronomers used pen and paper to draw what they saw, but the human eye is a lousy detector and our brain can play tricks on us. Astrophotography, first explored in the mid-nineteenth century, has proved to be a powerful, objective way of recording telescopic images with the advantage that long exposures revealed much more than the eye could ever see. But the true revolution arrived with electronic detectors and digital image processing. credit: ESARelated Videos
- ESA PAO Event with Glenn, Brown and Duque
- ESA Exhibition, Telecommunications
- ESA Exhibition Videoclip – Telecommunications
- Interview with ESA Director General Jean-Jacques Dordain
- ESA Science: past and Future
- ESA's gravity mission GOCE
- ESA astronaut Frank De Winne training in Japan
- ESA: ATV Live 05
- ESA: ATV Live 06
- ESA: ATV Live 07
Word of the Day
Word of the Day
provided by The Free Dictionary
Today in History
This Day in History
provided by The Free Dictionary
Quiz Me
What is the typical weight of an adult African Bush Elephant?
or View Results





















RSS Feeds