Steve wrote:

Jan Panteltje wrote:

I have been wondering if somehow fluid lenses could be used for adaptive
optics in a telescope.
Jan,

I don't think actuation is a critical problem, more like others have
said, AO for astronomy is light starved and needs to be high speed.

IIRC the rest of AO (usually implemented as a deformable mirror, not a
lens) is an artificial star created with a laser, and used with
detectors and a serious computer to correct for atmospheric distortions.

The FAA seems to be a bit nervous these days about lasers being shot
into the sky...

--
Pat O'Connell
[note munged EMail address]
Take nothing but pictures, Leave nothing but footprints,
Kill nothing but vandals...