The 60056 Series Q Arc Lamp Source is our most popular low wattage arc lamp source, and it's easy to see why. It is adaptable without being complicated to operate, highly stable, and economically priced. This version uses a F/1.5, single element fused silica condenser, and has a 1.3 inch collimated output. It has a 1.5 Inch Series female flange. These systems include everything you need to begin your work. They run Hg and Xe arc lamps from 50 to 100 W. The included OPS-A150 Power Supply is a highly regulated source of constant current, or power, for low power arc lamps.