6.2. UES guiding

Having acquired the star of interest on to the slit and possibly an Off axis guide star on say the Coarse Fibre, choose which one you wish to use for guiding, and select it with SELECT COARSE or SELECT SLIT as appropriate. If you are guiding on the coarse fibre, display the slit also with ADD SLIT. To start the guiding loop, set a sensible guide integration time with n GUIINT and then start guiding with GUIDE ON . The slit is always displayed, and any other fibre which has been selected, or added. Note that you do not need to do a FIELD at UES.