Observing system

As a result of the change in the default size of the readout of the CCD in the parallel direction some post-processing tasks used by some of the observing scripts had to be adapted to accommodate this.

Various scripts also had to be modified to work with the new optical element data base. The alfosc.acquisition script used to acquire a target on a slit for spectroscopy was upgraded to automatically use the correct telescope focus depending on if no filter or an order-sorter filter was used. To allow for non-standard use of the script a flag was added which will make the script not update the focus.