Re: [ATM] what is strelh ratio and how do I mount the spider

[Jovian <joviansoftware@comcast.net>]

David,
	I have found a nice website at www.astronomydaily.com it has a nice atm
section. check out the optics section there they have a decent atm
calculator that should help you out. I should note though that it does
require a free registration and cookie use. It does do nice features
with it though should check them out.

Nick
> My question is this:  Given that the sonotube is 8 feet, 3 inches long and the focal length of the primary mirror is 100 inches, where should I place the eyepiece holder (focuser), spider, and primary mirror mount?
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