In recent years, there has been an increase in available instruments, resulting in an increase in mounting locations.  SHARC2 was moved to a new Nasmyth platform, N2, and the performance improvement from the DSOS was lessened.
This chart shows Ganymede when SHARC2 was on the Cassegrain mount, shown on the left.  The picture on the right is of Ganymede with SHARC2 mounted on N2.
At first sight my thought was, “Aw poop!”  Next thoughts were “What is happening?” and “What can be done about it.”
~Melanie Leong~