I'm starting in astrophotography with Canon 1100d and 75-300mm lens. My first goal is Milky Way. I read in a article that long exposures cause overheating sensor and even may damage it. Is it true? If yes, how long exposure can I use safely.
I have autotracker and want use exposures at least for several minutes, and maybe more than 10 minutes for very deep sky objects.
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