Apply fast recenter logic after dither

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we can speed up recovery after dither by following the same logic as the "fast 
recenter after calibration" feature.

after a dither we know the absolute distance we need to move on each axis. the 
fast recenter code knows how to calculate the max allowable move (taking the 
max duration configuration parameter, the guide rate, and the search region 
into account).

we should move each axis in max-size chunks per the fast recenter calculation, 
bypassing the guide algorithms (i.e. set normalMove=false)

once those moves are complete, we can switch back to ordinary guiding subject 
to the guide algorithms (normalMove=true)

Original issue reported on code.google.com by andy.gal...@gmail.com on 25 Jan 2014 at 8:19

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Original comment by andy.gal...@gmail.com on 26 Jan 2014 at 5:45

• Changed state: Started

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fixed in r698

Original comment by andy.gal...@gmail.com on 27 Jan 2014 at 12:31

• Changed state: Fixed