Re: modding digital cameras

"Don Stauffer in Minnesota" <stauffer@xxxxxxxxxxxx> schreef in bericht
news:1158328376.142854.105940@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

bugbear wrote:
mmccaws2 wrote:
Hi

I am trying to get a used digital camera and mod it for long duration
photography in dark areas, exposures of greater than a minute. How
does one find out about the camera physical and electronic circuits to
mod it? I know they do it for web cams but the CCD arrays are very
small.

AFAIK some digi camera can do long exposures already.

I assume this is for astronomical use?

AFAIK the age of the modded webcam is over,
and there are reasonably economical
astro-cams (some with cooling etc) on the market.

Failing this, repeated exposures, checked and stacked
(e.g. registax) will give similar overal
results without a soldering iron ;-)

This was done (not by me) on a non modified Canon A510...
http://mikebeauchamp.com/dump/windmill1comp%20copy.jpg

whose longest exposure is 15 seconds.


BugBear

Indeed, if the camera has a bulb or a time mode for the shutter, the
exposure is virtually unlimited except by noise.

AND by battery. Do not forget that keeping the shutter open drains the
battery. Normally i take about 400 pictures with onde battery, but an
exposure of just 30 minutes drains the battery.

Rutger


--
http://www.flickr.com/photos/zwaarddrager/


.

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