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Dunk, I have a Nikon D5300 and would agree that it gathers Ha wavelength much better than my old cooled Canon 450D, which I believe had the Digic 3 processor. I have not noticed any strange star processing by the D5300, but then again it is mainly used for wide field shooting with my little Astro-tech ED60.
I do feel that modern DSLRs produce a significant amount of internal heat due to the processor activity. Some of these cameras have multiple internal processors with no way of shedding heat. Sensors alone don't produce much heat but it's the processors that heat up the camera. I would like to see a stripped down DSLR, with cooling, but I guess I am dreaming.
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