Editing Lucky imaging (section)

{{Short description|Technique for astrophotography}}
[[File:M15 core lucky 10pc.gif|thumb|Lucky image of [[Globular Cluster M15|M15]] core]]

'''Lucky imaging''' (also called '''lucky exposures''') is one form of [[speckle imaging]] used for [[astrophotography]]. Speckle imaging techniques use a [[high-speed camera]] with [[shutter speed|exposure times]] short enough (100&nbsp;ms or less) so that the changes in the [[Earth's atmosphere]] during the exposure are minimal.

With lucky imaging, those optimum exposures least affected by the [[atmosphere]] (typically around 10%) are chosen and combined into a single image by [[shift-and-add|shifting and adding]] the short exposures, yielding much higher [[angular resolution]] than would be possible with a single, [[long-exposure photography|longer exposure]], which includes all the frames.