Blade transfer performance and pull out time

Despite increased size, the new half-meter-class shutters have the same photometric performance (homogeneity) as smaller devices, particularly at short exposure times. Some of the survey observations are planned as rapid exposure sequences with short exposure times. To minimize overhead times, shutter blade movements must be fast, yet still very precise and always impact-free. Idle shutter times (i.e., the time between the "exposure end" and the next "start" signal) of about 1 sec are required.

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