Tilt data from 05/09/00, tracking RCW 57.



The data is fit to a sine function of the form

SPO = average + amplitude*sin(2*pi(t + phase))

(note the sign on the phase, which may be opposite what you're used to).

The "arb-az" given is the location in arbitrary-az of the point (1-phase), i.e. where sin = 0 and cos = 1.

A table of all SPOs can be found here.

Here are the residuals for this data:



The black lines are at 0 (the mean of the residuals is almost exactly 0), and the dotted lines are at 1 and 2 sigma. It would appear that there are no residuals greater than about 1 arcminute, which implies that if we can get SPARO following the SPO curve, we should be pointing well enough given our ~5' beam size.


Added by Tim on 07/18/00