On Thu, 03 Jul 2003 16:20:17 GMT, in uk.sci.astronomy , #MK
wrote:

Hi!

I hope you don’t mind me asking two questions, regarding amateur
telescope making:



1. How... Ineffective or less “good” is a 6 incher from an 8 inch mirror?

the 8" will gather 64/36 times more light
any flaws in the grinding will be 64/36ths more noticeable.

[6 Inch with a F/8 ratio, or 8 inch with a F/6 ratio, hence focal length
isn’t significant].

the shorter focal length will show a little more aberration I believe.


--
Mark McIntyre
CLC FAQ http://www.eskimo.com/~scs/C-faq/top.html
CLC readme: http://www.angelfire.com/ms3/bchambless0/welcome_to_clc.html


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