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From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: laser diode operating range
Date: Tue, 19 Nov 2002 04:50:20 GMT
NNTP-Posting-Date: Mon, 18 Nov 2002 20:50:20 PST
"Sir Charles W. Shults III" wrote:
> "Chuck Simmons" wrote in message
> > Now you've got me thinking about getting a few low cost laser diodes and
> > trying speckle interferometry at home. I've intended to mess with that
> > for years but never get around to it.
> It seems I have read about amateur astronomers using laser pointers for
> speckle interferometry.
I can't imagine how since that sort of speckle interferometry is done
with large telescopes, narrow band filters, light only from the distant
object, fast 2D imagers and super fast hardware FFT units (two
I was thinking of the more common type used to show nodes in vibrational
modes mainly. Pretty simple really. There is some slick correlation
stuff that can be used metrologically but I can't afford that.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons email@example.com
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