Re: ATM Spider vanes

[Anthony Stillman <atmer@flash.net>]

>...I intend to cut out much
>of the spider to reduce thermal effects that make the spider diffraction worse
>when compared to wire spiders of greater thickness
>Mel Bartels

Of equal importance is the selection of a vane construction material and/or
a vane surface coating to control radiative cooling.  It is this radiative
cooling which lowers the temperature of the spider vane relative to the
surrounding air and induces so much disturbance in the wavefront.

Anthony