Linked from
The 27 pages that link to Astronomical seeing, each with the reason it gives.
Adaptive opticsRelated: It describes the image degradation that adaptive optics aims to reduce.
Astronomical observationRelated: Seeing limits the detail ground-based observations can resolve.
TeideRelated: Stable atmospheric conditions around Teide Observatory can improve image sharpness.
Jane LuuRelated: Atmospheric blurring limited the sharpness of images used in the search.