may14:Alfa calibration scans, rotation angle


    Alfa was reinstalled in the dome on 21may14 after being worked on in the lab. Spider scans (heiles calibration scans) were taken with alfa on 24,26may14 using beams0..6
This data was taken with model18A with the tiedown active.

The setup:

Calibration run results:

The plots show the   calibration results (.ps) (.pdf):
On 27may14 the alfa model was updated to remove the constant beam0 offsets (az,za):(2.13,-9.79)).

Fitting for rotation angle error:

    Part of the pointing error could come from the alfa rotation angle being off. To test for this :
    Plots showing the pointing error vs rotation angle offset (.ps) (.pdf):


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