Tuesday, November 19, 2019

today's AAT fun tidbit

From the amazing book, All About Telescopes!

Today's interesting fun fact tidbit:

The Cassegrain Reflector was made by Guillaume Cassegrain in 1672.

This is on page 2 of the AAT book, with nice hand-drawn graphic of course, along with some different types of telescopes, including the one that started it all, the Galilean refractor in 1608.

I have the honour of using a Cassegrain Reflector, the somewhat large one at the David Dunlap Observatory.

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