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Old 28-07-2006, 03:23 PM
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leon
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Join Date: Apr 2006
Location: Warrnambool
Posts: 12,801
Is It Diagonal, Is It Secondary

Hi All

Firstly don't get me wrong, this is not a gripe of any kind.

Some weeks ago i posted a thread, where i spoke about the secondary mirror and called it a Diagonal, and was corrected, and some didn't know what i was talking about, ( you don't have a diagonal in a telescope) they muttered...

Well we did, (that is us older folk on this site)

When we, us older people built, or purchased telescopes, it was always called a diagonal, and not a secondary as used today buy all you young blokes.
The secondary was actually the main mirror, and the diagonal was the other one at the other end of the tube.

And it's quite interesting to read some of the threads, where some say diagonal, and some say secondary.

This just means that we have heaps of old buggers on this site just like me...

Just thought i would get another interesting thread happening, have a nice day.

Now i'm off to Snake Valley to spend the night with Ken and some of the members of this site, for the Meteor Showers.

Leon
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