 |
Photoelectric Telescope (Photoelectric Eyes)
An astronomical telescope that uses the photoelectric effect to gather light, and then to present the finished image on a screen. (Read the full article)
| "star meridian transits to keep clocks accurate (Ah - that puts me on the right track. I couldn't remember from by astronomy classes long ago. Chief Technovelgist)" ( 1/19/2005 9:33:57 AM ) |
| "Well prior to CCDs, the French
had a camera electronique par le
focalisation electrostatique.
IIRC, light was focused onto a
metal halide screen, then the
emitted electrons were
accellerated by an electrostatic field and then focused onto the photographic
plate. It was good for only one image, since the vacuum tube had to be broken to remove the photographic plate.
Also, various electronic light
amplifiers, channel plate and otherwise, were used to make
astronomical images, as were
various common and exotic TV
cameras.
IIRC...." (Donald Heskett 3/26/2007 6:47:11 PM ) |
| "I found in a (translated) page a reference and picture of a camera electronique par le focalisation electrostatique. The instrument is dated 1949. Hopefully that link will work." ( 3/26/2007 9:49:50 PM ) |
More info on Photoelectric Telescope (Photoelectric Eyes)
Leave a comment:
Tediously, spammers have returned. Please send your comments to @technovelgy and I'll post them. Thanks!
Current News Articles
Why Not Move A Warehouse District?
'Did you never see a moving house before?'
Will An AI Found A New Religion?
'You must decide how you will worship Me.'
Terraformer Industries Make Methane
'Drake was the young spatial engineer he employed to terraform the little rock...'
I Need An Outdoor Spherical Display
'Usually a spherical display hovered in the centre...'
Worm Disrupts Physics Simulations Undetected For A Decade
'It diverts integers of the data, the fundamental message-units, so that they no longer agree.'
Muxcard Redditor's DIY Credit Card-Sized Computer
It's a computer, but just barely.
'Soft Assembly' Fashions That Fashion Themselves On The Wearer
'Clothes are no longer made from dead fibers of fixed color and texture that can approximate only crudely to the vagrant human figure...'
Orwell's Nightmare Of AI-Written Novels Comes To Pass
'Books were just a commodity that had to be produced, like jam or bootlaces.'
ISS Plagued By Leak - Again!
'There were perhaps a dozen bladder-like objects in the tunnel...'
Ridiculous 'Ghost Murmur' Tech Still Science Fiction
'...it rears and spreads its fan. It can pick one man out of a crowd.'
Outdoor Video Screens Can Be Arbitrarily Large
The Shape of Things To Come
Infrared Contact Lenses To See In The Dark
'I can see in the dark, Case.'
