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20021103 report

Pointing model OK, rms errors 2" in az & el


With SCUBA unavailable and the weather fine and stable, RxB has been much in use. The last 3 nights' pointing data are shown below, aligned by their individual (nightly) collimations :

Data are lacking from quadrant 1, but the total of 59 data have raw rms scatters in (daz,del) of (2.0", 2.3"), and if the most deviant datum (of Mars just after dawn on the 3rd night) is removed the remaining 58 data have rms's of (1.8", 2.1"). Running these data through the FIT7 program indicates little room for improvement in the model : fitted data have rms's of (1.7", 2.1")


Iain Coulson
Latest Update : 04 Nov 2002
Contact: Iain Coulson. Updated: Sat Nov 6 18:00:25 HST 2004

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