Observing Arrangements

FOC Target Acquisition Apertures

For convenience, a number of special formats to be used in the Mode I acquisition exposures have been defined. These formats (listed in Table 5.4) are calibrated and maintained in order to ensure good pointing accuracy (better than 0.2''). This applies currently to the F/96, however, the F/48 pointing accuracy has not been established yet.

Different sizes are available, but it is strongly recommended to use the larger images for acquisition purposes, due to the initial position error of the target's coordinates with respect to the Guide Stars (@ 0.33 arcseconds).

Generated with CERN WebMaker