POINTS is by design a global astrometry instrument, capable of constructing a bias-free
accurate to a few microarcseconds over the entire celestial sphere. Such a reference frame will
be about three orders of magnitude more accurate than the likely best available optical reference
frame. From observations of bright quasars and
AGN, as well as radio stars,
the POINTS GRF
will be tied directly to the radio frame. Hence, systematic errors in the radio frame may be found
and characterized, and determination of the coincidence between radio and optical emissions will
be greatly improved. Further, we can place significant bounds on the proper motions of bright,
well-separated quasars, with subsequent cosmological implications.
16:29 Wednesday, January 03, 1996
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