####
THIS CURVE IS FOR USE FROM JAN 20, 2001 TO AUGUST, 2001

g(az,za) fit:

The fit is for 1415 MHz, and is in K/Jy.
The zenith angle (za) and azimuth (az) are in degrees and the (za-15) terms are only used
for za > 15 degrees.
Average Gain [(polA+polB)/2]:

gainavg(az,za,f=1415MHz) = 9.0855699 -0.13198736*za + 0.020340197*(za-15)^{2}
-0.012610386*(za-15)^{3}
+0.39268538*cos(az) -0.027570212*sin(az) -0.48670176*cos(2*az) -0.064635743*sin(2*az)
+0.076154653*cos(3*az) + 0.090970115*sin(3*az)

gainavg(az,za,f=all) =
8.8121317 -0.12526847*za +0.034930436*(za-15)^{2} - 0.017510095*(za-15)^{3}
+0.46118491*cos(az) -0.04814893*sin(az) -0.4657348*cos(2*az) -0.060191821*sin(2*az)
+0.10344289*cos(3*az) +0.079684658*sin(3*az)

####
How good is the fit for calibrating data:

Errors in the gain measurement come from the measurement technique, the
source fluxes, and the cal values used. The r.m.s. of the fit was 0.56 K/Jy
(.56/9.3= 6%). This probably includes the errors in the source fluxes, but is
also do to the undersampling of the dish. The
data was taken with the lband narrow receiver.
Be aware that if your data lies in an undersampled region of the dish this
curve should be treated with suspicion!! This is particularly true if
your obervations were taken at high zenith angle (za > 17)
A plot of the residuals (really |data-fit|) is below: