Issue with T5i view finder when shooting stars.
Re: Long Exposure Noise Reduction?
While long exposure NR could be a potential problem, its highly unlikely that overheating due to the length of exposure is occurring. My T41 and my friends t5i & t61 all do several minutes per exposure without heating issues. In his case he has the cameras attached directly to an imaging telescope and typically does 180 to 300 second subs and will often do a run of 20 of these exposures one after the other.
Some people cool their cameras to control the amount of hot pixels and to improve long exposure astrophotography imaging. For the short duration that the OP describes it seems more likely that there is something else at play with the camera, which is why we need to see how the camera is setup and a step by step process to help the OP eliminate any potential problems.
Fujifilm FinePix HS20 EXR
Canon EOS 600D
Canon EF-S 18-55mm f/3.5-5.6 IS II
Canon EF-S 55-250mm f/4-5.6 IS II
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Dec 18, 2021
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