[simpits-tech] Teaser pics...
Ed Henderson
simpits-tech@simpits.org
Thu, 23 Jan 2003 22:06:14 -0500
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Gene, have you tried a white shower curtain? Worked pretty good for me
for rear projection... I have not tried a sheet for comparison.
Ed
Gene Buckle wrote:
>>Looks cool, Gene. Are you rear projecting on the screen?
>>
>>
>>
>
>Yes. This is our 3rd generation effort. The first was a proof of concept
>where we hung a twin flat sheet from the cieling. This worked out
>astonishingly well. For the second version, we built a 8' x 3' frame that
>used a sheet of white .030 ABS plastic as the screen. This didn't work
>out so well. The plastic cut roughly 75% of the light passing through it.
>It was *very* hard to see if there was any light pollution at all, and it
>didn't show night scenes at all - not enough light was getting through the
>plastic.
>
>This new effort uses a 9' x 8' screen frame made of 2x4 and 6 "L" brackets
>per corner for strength. The screen material is a queen sized flat sheet,
>made of 230 thread per inch fabric. I hope to be able to test this on
>Saturday night.
>
>This screen will be positioned at the end of the nose instead of right in
>front of the windscreen like #2 was. The hope is that the larger view
>will provide a more realistic view.
>
>BTW, the projectoion system consists of a second hand 800x600 LCD
>projection panel sitting atop a 4000 Lumen 3M Overhead Projector. If
>you're going to do rear projection this way, 4000 Lumen is pretty much the
>minimum if you want good daylight scenes.
>
>g.
>
>
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>
>
>
--
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______________________
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Ed Henderson
aircop@comcast.net
Naples, Florida
http://mywebpages.comcast.net/hangar
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Gene, have you tried a white shower curtain? Worked pretty good for me for
rear projection... I have not tried a sheet for comparison.<br>
<br>
Ed<br>
<br>
<br>
Gene Buckle wrote:<br>
<blockquote type="cite"
cite="midPine.BSF.4.44.0301231438370.5205-100000@grumble.deltasoft.com">
<blockquote type="cite">
<pre wrap="">Looks cool, Gene. Are you rear projecting on the screen?
</pre>
</blockquote>
<pre wrap=""><!---->
Yes. This is our 3rd generation effort. The first was a proof of concept
where we hung a twin flat sheet from the cieling. This worked out
astonishingly well. For the second version, we built a 8' x 3' frame that
used a sheet of white .030 ABS plastic as the screen. This didn't work
out so well. The plastic cut roughly 75% of the light passing through it.
It was *very* hard to see if there was any light pollution at all, and it
didn't show night scenes at all - not enough light was getting through the
plastic.
This new effort uses a 9' x 8' screen frame made of 2x4 and 6 "L" brackets
per corner for strength. The screen material is a queen sized flat sheet,
made of 230 thread per inch fabric. I hope to be able to test this on
Saturday night.
This screen will be positioned at the end of the nose instead of right in
front of the windscreen like #2 was. The hope is that the larger view
will provide a more realistic view.
BTW, the projectoion system consists of a second hand 800x600 LCD
projection panel sitting atop a 4000 Lumen 3M Overhead Projector. If
you're going to do rear projection this way, 4000 Lumen is pretty much the
minimum if you want good daylight scenes.
g.
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To unsubscribe, please see the instructions at the bottom of the above page. Thanks!
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="$mailwrapcol">--
************************************
______________________
()
( )
/ \
Ed Henderson
<a class="moz-txt-link-abbreviated" href="mailto:aircop@comcast.net">aircop@comcast.net</a>
Naples, Florida
<a class="moz-txt-link-freetext" href="http://mywebpages.comcast.net/hangar">http://mywebpages.comcast.net/hangar</a>
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