| http://www.w3.org/ns/prov#value | - Delivered Strehls should be a few percent in J, up to 10% in H and K. The 25 arcsecond limit is a hard limit based on the ALTAIR optics, i.e. guide stars further than this cannot be observed with LGS. Note that for guide stars between 18 < R < 18.5, a dark time request is required and stars between 17.5 < R < 18 require grey time.
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