Is it possible to create a feature that allows the user to select an area within an image in the fitsviewer to give a targeted opportunity to critique background DN / ADU e.g a moveable box of say 10x10 pixels that shows the user some appropriate stats (Min/Max/Mean/Median). The mean/min/max of the 100 'background' pixels could be a useful value to quickly determine exposure. The Fits Viewer currently produces DN values for the whole image so why not for a user selected area. Maybe a mouse over would be the simplest.

* Posted earlier on my topics page, added here as a wished for feature

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