Auto-adjust focus during observing loop #19
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This PR takes advantages of the changes to
lvmguiderin version 0.5.Guider.focus()to use the updatedlvmguider focus. Among other things the estimation of the best initial focus based on temperature now happens inlvmguider.Guider.adjust_focus()(andGuiderSet.adjust_focus()to make a quick adjustment to the focuser position based on the change in temperature since the last focus sweep.adjust_focus()before each dither exposure in the observing loop to prevent the focus from drifting.