EFOSC2 Rotator Offset Angle Calculator
You can use the following to calculate the Rotator Offset Angle (the parameter needed for your OBs) from a given position angle. Your position angle (by definition) must be between
0 and 360 degrees.
If you encounter any problems with the web page itself or if you don't agree with the angles returned please email
It is also advisable to double check the calculation using the diagrams and instructions given at the page describing the
. I have tested this well - but if you want to triple check...
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Last update: November 6th. 2002