TN 93

[Tom Droege <tdroege2@earthlink.net>]

I see Michael has put up the preliminary version of TN-93 on the Clear and 
Dark Sky Detector.  Sorry there is no schematic yet.  "My dog ate the 
computer with the scanner."  Actually I went down stairs to Jennifer's 
computer which has the scanner attached and turned it on.  There was a loud 
"bang" and a smoke trail came out of the power supply.  Hopefully that is 
all that died.   If I come for a visit I would recommend that you not let 
me near your computer with the luck I have been having.

The curve shown is actually better than it looks.  It will be pretty easy 
to separate clear sky data from cloudy sky data.  Looking at the curve if 
you draw a line at 2.5 volts (25000 on the curve) and keep all the images 
where the Clear Sky signal is above the line, it will do a good job of 
sorting the images.

Tom Droege