Something else of the day:|
|This was sent to me in 2000 by my friend, Peter Armstrong, who made his own
Here's an "isn't technology great" thing: With a one minute exposure
through my 16" telescope, I can record fainter details than the "All Sky
Survey" done in the 1950s with the 48" Schmidt camera at Mt. Polomar. And
they had the advantage of ten times the mirror area, a 45 minute exposure,
and one of the best observing sites on Earth. Of course they had to use
chemical emulsions while I have cooled CCD technology and computers. I
calculate the performance ratio at about 1000 to 1. I have recorded a
quasar that is about ten billion light-years from here - the
photons I recorded - about 10,000 of them - are twice as old as the Earth.
The quasar is between the two lines drawn on the photo.