This is the 3.5m WIYN telescope on Kitt Peak.
In April, 5 nights of time will be spent following up work done by the good people of the Galaxy Zoo. The actual project is rather unexpected; early in the project Bill Keel of the University of Alabama appeared on our forum, asking people to keep an eye out for overlapping galaxies. Not mergers, but overlaps. Not all are as spectacular as NGC3314 (the object that also provides Prof. Keel’s handle on the forum) but our industrious users have discovered lots of them – and now one of the largest and most modern telescopes in the world is following up their discovery. Christmas come early, if you ask me.