This is a good idea in theory, but there are some complications.  One pretty serious issue would be that having the shutter closed for part of the image effectively changes the exposure time.  I guess a solution could be to then keep the camera shutter open by a longer time at the end, but if the camera gets its information about of long the shutter should be open at the beginning of the exposure and does its own timing, then that wouldn’t work, but if the INDI driver does the timing it could work.  I think different cameras do this differently.  Another big issue would be that satellite brightnesses are not constant.  At some hours of the night and at some locations on Earth, satellites are very bright, but at others, the sun doesn’t hit them.  Also some satellites change brightness as they tumble or spin, like iridium satellites did.  So this leads me to think that the best solution might be a wider field monitoring camera.  This is a good idea though and should be considered.

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