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Re: IR/UV Photography Products in the '96-1997 Nikon Produc

  • From: "Willem-Jan Markerink" <w.j.markerink@xxxxx>
  • Subject: Re: IR/UV Photography Products in the '96-1997 Nikon Produc
  • Date: Sun, 3 Nov 1996 12:09:24 +0000
On  2 Nov 96 at 22:30, Scott Donkin wrote:

> I like the (typical) camera manufacturer jargon... "allow UV rays to pass
> virtually unimpeded".  The "UV band goes down to 10nm.  Mind you, UV down
> the scale that far has to be man made, as the far UV (UVC) is blocked by
> (what's left of) the earths atmosphere.

For those interested, I have a NASA chart on my homepage which shows 
the sun spectrum as it reaches the earth:

http://www.a1.nl/phomepag/markerink/mainpage.htm

Btw, got a nice brain cracker from the guy who provided me with this 
chart:
Do clouds at night come as pronounced on IR film as they would on a sunny day?

One can't answer that really without knowing the spectrum at 
night....8-))

 
--
Bye,

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     _/  _/ illem    _/     _/ an    _/  _/  _/ arkerink
                     _/_/_/  



      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]

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Topic No. 4