Movie of set 1 (exposures 765188-195)
This movie shows the difference in coordinates between successive pairs of exposures. The window is the same for all exposures (0.6 x 0.6 arcsec). What you would expect is tight bunches of points for most pairs of exposures (since there 4 with the dome covering one side of the pupil, followed by 4 on the otehr side). YOu would expect the middle exposure pair to show the Hartmann focus effect because it's a difference between the two orientations of the dome. That's not what you see: there are 2 exposure differences with strange effects! Furthermore, the effect should be orthogonal to the set below - but it's not.
Movie of set 2 (exposures 765196-203)
Here you see the bizarre difference in the middle of these exposures (see my email of Oct 13th), but nothing like that in the first set.
1. I have checked all this with a completely independent method of calculating centroids (psf fitting). The results are the same.
2. I think we can conclude nothing from these tests, except that ...
3. The above does however show quite conclusively that the atmosphere is not
playing any role at all. All the exposure pairs with the dome in the same orientation
are very well-behaved (except one!).
