> I've heard here and there that such long exposures are not
> reccommended due to risk of damage to the sensor.. Is this true ?
> i've tried a few searches on the subject but could not find any
> conclusive information.
>
In my experience trying to do some astro-photography, a DSLR
doesn't work very well for really long (more than a couple of minutes).
The thermal noise of the sensor really starts becoming a problem. I do
know that for astro stuff, lots of short-term exposures are often stacked
together to reduce the noise.
As far as damage to the sensor, I've heard that's mostly a myth
and has to do with having enough light to bleach the dyes on the color
Bayer filter on the front end.
-Cory
--
*************************************************************************
* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
*************************************************************************
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