Telescope offsets

The telescope is capable of making relative offsets in X/Y or in RA/DEC. Note at this time the only way to make an absolute position of the tracker is to start a new trajectory. In addition, the probes could be moved independently in RA/DEC or absolute X/Y. Note at this time no relative moves can be made with the probes.

There is also the ability to move the telescope but keep the same guide stars. This requires the telescope to move one direction and the probes to move the other. Because the probes live in a small annulus about 0.04 degrees wide (from 0.14 to 0.18 in radius). Thus, moves larger than about 100" have an excellent chance of moving a probe into a software limit.

Here is an example of that coordinated move:

syscmd -T 'offset_trajectory(dx_ang=0, dy_ang=-100, adjust_probes="true")' where the dx_ang and dy_ang are given in arcseconds.

syscmd -T 'offset_trajectory(dra=0, ddec=-100, adjust_probes="true")' where the dra and ddec are given in arcseconds.