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Project Starshine [was: Laser Satellite Comms]



For information on project Starshine, see

    http://www.azinet.com/starshine/

- Steve N7HPR


At 10:24 AM 3/1/99 -0500, you wrote:
>The Navy Research Satellite STARSHINE will fly on STS-96 and might have
>some potential as a laser reflector for optical comms.  It is a 19 inch
>diameter sphere covered with 800 1" flat mirrors.  It will be in a 51
>degree orbit so most everyone will see it.  Rotating at about 1 RPM it
>will flash sunlight at about a 1 second rate.  Visible at twilight.   At
>only 205 miles high, it will only last a few months.
>
>    Although the ability to actually detect a laser at amateur power
>levels and optics is miniscule, I just thought someone might want
>to calculate the possibiilty.  Because of the flat mirrors and dynamics of
>movement, the point-to-point comm possibilities can only exist for
>milliseconds each second.  Thus a high data rate burst is needed.
>
>One possibilty might be to use conventional AX.25 packet at 9600 baud.
>The shortest possible packet is a few sync bytes, the FROM and TO address
>plus a few bytes of data totaling about 30 bytes.  This would take about 
>30 milliseconds.  Might work... 
>
>de WB4APR, Bob
>
>
>----
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>
>
 - Steve
 (n7hpr@tapr.org)
 (n7hpr@amsat.org)

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