[Laser] Big adaptive optics

[Terry Morris W5TDM]

Well I would think if the optical element is DCC (double concave), and they 
are using tip/tilt that would give you 2-axis deflection. That would be the 
same as two rotating wedges. If my head is thinking straight today, that 
would seem to form a wedge in all directions from the center of the element.
The olny advantage 2 rotating wedges would have is one wedge could cancel 
the other wedge, I don;t see why you would need to do that cancel.

But hey, its' Saturday and I may have my head on cancel ;0)

Terry w5tdm




>From: J Forster <jfor at quik.com>
>Reply-To: Free Space LASER Communications <laser at mailman.qth.net>
>To: Free Space LASER Communications <laser at mailman.qth.net>
>Subject: Re: [Laser] Big adaptive optics
>Date: Sat, 22 Sep 2007 13:15:46 -0400
>
>Thanks.
>
>It's interesting they chose to go the refractive approach but I don't see 
>how they can get two
>axis correction from a single hard glass element. If there were two 
>rotating wedges, it'd be
>obvious.
>
>-John
>
>
>Terry Morris W5TDM wrote:
>
> > Opps, second link was wrong one.
> >
> > Try:http://www.sbig.com/products/ao-l.htm
> >
>
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