"Stuart Levy" <s_levy@xxxxxxxxxxxxx> wrote in message
> In article <42D76280.9DDC5608@xxxxxxxxx>, Marry wrote:
>> Here's an answer Professor Morrison gave in 1953:
>> "Longer focal length optics produce more stable higher resolution images,
>> because the longer focal length optics give light a long tube to
>> in. It can be shown that in the shorter tube telescopes light does not
>> the time or distance to settle down from its journey through space and
>> the turbulent atmosphere. Light which can be stretched out in a long tube
>> vs a short tube, has both the time and the distance to settle down and
>> itself of turbulences, which affords a much better image at the receiving
>> You cant beat them apples (explained by a professor of physics)!
> Wow. A physicist said *that*? Sounds like an answer worthy
> of Ask Dr. Science!
Its comforting to know that light has a chance to collect itself and put on
a good face when using longer f/ scopes, isn't it.