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