On 12 May 96  14:38:14 Roy McNeill typed to Niels Petersen about Space Ace


 >  NP> By optimum do you mean, in light gathering capacity?

 >> 8x40 or 10X50 gives a 5mm
 >> exit diameter and that is about the minimum for general use. 7X50 is
 >> better.

 >  NP> It must be a bad day.  I am lacking in comprehension. :-(


 > Crash course in elementary telescope optics:

Filed for future reading on a good day and for referral when the memory
does it's sieve act.
I have now got a general understanding but I will need to re read it to
soak up the details

Thank you very much for that Roy.

 > Clear as mud?

Clearer than mud but still a little opaque :-)
(and that's my fault not yours)

Kind regards
Niels Petersen

--- FMail/386 0.98