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Arise, you have nothing to lose but your barbed wire fences!

1994-04-27 - Re: CU Crypto Session Sat

Header Data

From: Jim McCoy <mccoy@ccwf.cc.utexas.edu>
To: karn@qualcomm.com (Phil Karn)
Message Hash: ddc374e7d9596dfc882c76e6389a0d7d68fd3f295d6754d7cdc8d17a51109e05
Message ID: <199404272041.PAA11305@flubber.cc.utexas.edu>
Reply To: <199404271854.LAA07395@servo.qualcomm.com>
UTC Datetime: 1994-04-27 20:41:18 UTC
Raw Date: Wed, 27 Apr 94 13:41:18 PDT

Raw message

From: Jim McCoy <mccoy@ccwf.cc.utexas.edu>
Date: Wed, 27 Apr 94 13:41:18 PDT
To: karn@qualcomm.com (Phil Karn)
Subject: Re: CU Crypto Session Sat
In-Reply-To: <199404271854.LAA07395@servo.qualcomm.com>
Message-ID: <199404272041.PAA11305@flubber.cc.utexas.edu>
MIME-Version: 1.0
Content-Type: text/plain


Phil Karn <karn@qualcomm.com> writes:
[sat stuff and big mirrors...]
> >Mirrors could be sectional.  Many mirrors can be joined together into a much
> >larger mirror.  Take a look at those put it together yourself model kits.
> 
> Remember that when they're joined, they must maintain an accuracy of a
> small fraction of a wavelength to not spoil the results.

They do not need to be joined.  There already exist examples of "large"
telescopes on the ground that combine the light received by multiple
smaller mirrors into a single "synthetic image."  The individual mirrors
can be small for easy transportation and can be added over time to keep
increasing the resolution...

jim

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