Time-delay scatter analysis at good and poor resolution in data B. First row: images in the blue wing of Hα at Δλ = −0.8 Å. Second row: images at Hα line-center taken 4 min later. Third row: scatter diagrams for each image pair above with the same axes as in Figs. 6 and 8. The green box selects the lower left part with corresponding pixels outlined by green contours in the images above. First column: image pair for the Pub B PHE and contrail, the same as in Fig. 1. Second column: same image pair smeared over 1 arcsec. Third column: image pair with good seeing. Fourth column: image pair with poor seeing. The latter pairs are marked with circles to the right in the lower graph of Fig. 2.