DSLR Cooling...

[dugnsuz]

Hi All,
I've heard that there aren't any stupid questions, but I think I'm about to be the exception to the rule!

Q: Can one refrigerate a DSLR prior to an imaging session to achieve some beneficial results?

Perhaps in a container with silica gel packs.

Stop laughing!!
Cheers
Doug:thumbsup:

[Dennis]

Hi Doug

Generally when you cool a ccd camera, it is better to get it to a pre-determined temperature, and then keep it here. When taking several say, 3 minute exposures to stack them, it is more effective to regulate the temperature so each exposure is taken at the same temperature, which should be the same temperature as your dark frames.

Having a ccd at a variable temperature during an imaging session would probably make it quite difficult to calibrate the images due to the un-regulated temps.

Cheers

Dennis

[dugnsuz]

Cheers Dennis,

I suppose by starting this thread I'm looking for the poor man's way to cool an unmodified DSLR!:P

To put it in perspective I would be taking up to 10x 30s - 1 min exposures
of wide field objects with 35mm to 200mm lenses.
Cheers
Doug:thumbsup:

[Dennis]

In that case Doug - go for it! Your DSLR will probably take a dark frame, in-camera and out of your control, after every 30 sec exposure, so the temps of each light/dark combo should be reasonably close.

You may need Flat Frames to divide into the sub-frames in case of vignetting, dust spots, etc.

Cheers

Dennis

[Gama]

There was or still is a padded insulated bag that you place your camera in and it pumps cold air in it while your taking your images.
The bacg is thermally insulated, thus it keeps the camera cooler than the ambient.
You need to do a search for it, as i cant remember its name. Or make one yourself..

[dugnsuz]

Thanks for the heads up Gama.
Wonder if my mount could take the weight of the ESKI!??:lol: :lol:
Cheers
Doug:thumbsup: