Exposure stop = exposure lost! Any solution?

Question

When you push the STOP button, the exposure is lost...it would be much better to record it (somdtimes you have to stop because of c louds coming...)Tjis is particularly important when you do spectroscopy, which are usually long exposures...Any solution?
Even better, you should be able to interrupt exposure (that is, close the shutter) and then continue when the sky is clear again...
Thanks for your consideration

Answer 1

As for the question, one possible solution could be to use the "Pause" feature instead of the "Stop" button when clouds are coming, as this would allow the exposure to be resumed later without losing the progress already made. Additionally, some camera models may have a feature that allows for "shutter delay" or "shutter countdown" to be set, which can help to minimize the effects of any sudden interruptions during long exposures.