 |
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. So, send me your comments to bill at the site name (be sure to mention the page) and I'll post them. Thanks!
Current News Articles
Quaise Uses Beams Of Energy To Dig Geothermal Wells
'The peculiar quality of this light, which gave it its great preeminence over all other penetrating rays...'
Robots Repair And Modify Themselves
'The overworked leg motor would have to cool down before he could work on it...'
Waymo And Tesla 'Autonomous Cabs' Are Piloted By Remote Drivers
‘Where to, sport?’ the starter at cab relay asked.
Robot Janitors Get To Work
'A few mechanical cleaning devices crept here and there...'
Robots Learn To Install Charged Batteries Into Themselves
This is nothing new for science fiction fans!
Robot Rabbits Entice Pythons
'That little robot rabbit knew what it was talking about...'
LLM 'Cognitive Core' Now Evolving
'Their only check on the growth and development of Vulcan 3 lay in two clues: the amount of rock thrown up to the surface... and the amount of the raw materials and tools and parts which the computer requested.'
Has Elon Musk Given Up On Mars?
'There ain't no such thing as a free lunch.'
Bacteria Turns Plastic Into Pain Relief? That Gives Me An Idea.
'I guess there's nobody round this table who doesn't have a Crosswell [tapeworm] working for him in the small intestine.'
When Your Child's Best Friend Is An AI
'Figments of his mind in one sense, of course, for he had shaped them...'
China's Drone Mothership Can Carry 100 Drones
'So the parent drone carries a spotter that it launches...'
Drones Recharge In Mid-Air Like Jets Refuel!
'...nurse drones that would cruise around dumping large amounts of power into randomly selected pods.'
