I agree that the imaging data on meridian is quite important. I do photometric work and know that the data from meridian usually has the best quality due to a lower airmass.

However, I will still be grateful if you can add an option to flip immediately and pause the exposure if the duration is longer than the time to meridian. Since I am working with a remote telescope, I must keep the telescope in a safe position as much as possible.

In addition, shooting a target with a exposure duration longer than 600s is quite common for me as I use Strömgren u filter to measure the Balmer jump, where the light flux is quite low in near UV (due to the Balmer jump the stellar flux is significantly lower and the atmosphere absorb more light in NUV). It is necessary to get a longer exposure to achieve the same SNR with those broad band system.

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