Fig. 3
Spectro-images showing samples of the PSF estimated from continuum images of Th 28 (left) and two background stars (centre, right) in the Hα wavelength band, with contours starting at 4-σ of the background noise and increasing as factors of 
. Measured FWHM values are given in the y
and x
directions (perpendicular and parallel to the jet direction, respectively).
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