Select the appropriate pointing origin for your target by clicking on the red labels at the right of the plot. If you are unsure which of the light blue boxes represents the guider FOV, consult your instrument specialist. The position angle is adjusted by clicking on the circular blue buttons at the top right-hand corner of the Star Chart plot. The angle increment may be adjusted by clicking the appropriate arrow button in between these circular buttons. Note the optimal position angle and ask the OA to use this position angle when acquiring the target during the night.
Compute position angles Create a star chart as described above .
The circular blue buttons in the upper right corner change the rotator angle clockwise or counterclockwise. Use these controls to rotate the field of view as desired. Note the rotator angle, listed in green digits to the lower left of the plot. This is the value to give the OA when setting up for the field.