We describe an off-axis design for a 6.5-m astronomical telescope optimized for low scattered light and low emissivity. This is part of a new concept for an instrument that we call the New Planetary Telescope. We show how the geometric optical performance can equal that of an on-axis conventional telescope while the diffractive performance fundamentally surpasses conventional telescopes because of the absence of pupil obstruction. The decentered concept also allows wide-field and versatile instrumentation configurations that are not possible with more-conventional designs.
© 2000 Optical Society of America
Original Manuscript: August 1, 1999
Revised Manuscript: January 27, 2000
Published: June 1, 2000
Gil Moretto and Jeff R. Kuhn, "Optical performance of the 6.5-m off-axis New Planetary Telescope," Appl. Opt. 39, 2782-2789 (2000)