Telcon Update for Flexure Button

Telcon Update for Flexure Button

Selecting this check-button updates the coordinates (and the telescope position) for flexure. That is, as time goes on and the telescope flexes more and more under gravity, these deviations will be taken into account and LBC will attempt to keep the current image centered in the telescope's field of view. Our ability to correct for flexure is only as good, of course, as our flexure measurentes, contained in the flexdata.dat file. You can see what the offsets are at any time by clicking on the Disp. Flexure button.

If you turn this feature on while pointed at a region, you will see the displayed Telescope Coordinates change by the amount of the flexure, while the solar position display remains the same, since flexure means the telescope is not really pointing to where it thinks it is. Turning on flexure update is essentially saying, "I am at this point on the sun, but I know the telescope isn't really pointed there because of flexure, so keep track of that and keep me pointed at these coordinates even as the telescope begins to flex more."

Solar coordinates = Telescope coordinates - Flexure offsets.

Return to Telcon Layout Page.
sjk@begonias.bbso.njit.edu
6Dec97