Fabricate 4 lenses and 2 prisms for ground based telescopes Large diameter, fast lenses Precision bonding of wedges for prisms The Wide Field Corrector consists of a group of lenses that remove off-axis aberrations at the f/5 focus of the converted MMT, allowing the telescope to offer excellent images over a very large field. The Wide Field Corrector has two modes of operation. It can be used for wide field spectroscopy, in which case it has a 1° diameter field. The spectroscopic field is curved (8 mm sag) but highly telecentric. In its imaging mode, the corrector has a 0.5° diameter field and a flat focal surface. The system works over the 320 to 1800 nm range, but the anti-reflection coatings are optimized for the 320 to 1000 nm range. Atmospheric dispersion compensation prisms are included in the spectroscopic mode.

For more information, please visit the MMT web site or the Magellan web site.