LAC stands for Last ACam image. This runs only mcs currently. It locates the last ACAM image taken and copies it to your local working directory. A ds9 gui is used to display the image and the user marks the target star. Later you are queried for the RA,DEC of that targe and the AZ and Object name of the target.
% lac 20160110 **** Lots of queries and operations that will probably change occasionaly *****This code may change sometimes, but a number of useful things are placed in the FITS header. Finally, using the input Ra,Dec and the measured X,Y (with ds9) for the target star I have (using code from acam_fake) made lac put a seemingly working WCS into the image FITS header.