Re: digital pinhole?

hi,

CCDs have a property of reading heat as much as reading light, since
heat has also its waveform.

long exposures makes the CCD surface get moisty, I believe that this is
why we get those dots, they are from the heat interference.

so, you need a CCD made for long exposures which is called cooled CCDs.

they may be found in cameras used for astronomy (pinholes whatching the
stars!!!!).
http://www.sbig.com/

I suggest you take a look at this animation of a comet made with a CCD:
http://user.icx.net/~mfleenor/ccd/07032000_0800ani.html

[]s
luish

http://www.ignore.com.br
Received on Tue Dec 10 17:30:37 2002