ultracam speed

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example dead-time calculations
full-frame

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shift by 1024	1024 x 24 x 10-6 = 0.025 s
shift 10242 pixels	10242 x 0.8 x 10-6/2 = 0.42 s
readout 10242 pixels	10242 x 3 x 10-6/2 = 1.57 s

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dead-time = max (0.025, 2.015 - t_exp) s

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100 x 100 window (non drift-mode)

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shift by 1024	1024 x 24 x 10-6 = 0.025 s
shift 100 x 1024 pixels	100 x 1024 x 0.8 x 10-6/2 = 0.041 s
readout 1002 pixels	1002 x 3 x 10-6/2 = 0.015 s

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dead-time = max (0.025, 0.081 - t_exp) s

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100 x 100 window (drift-mode)

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shift by 100	100 x 24 x 10-6 = 0.0024 s
shift 100 x 1024 pixels	100 x 1024 x 0.8 x 10-6/2 = 0.041 s
readout 1002 pixels	1002 x 3 x 10-6/2 = 0.015 s

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dead-time = max (0.0024, 0.0584 - t_exp) s

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