NASA NTRS · 19760012022
A wide-field telescope with spherical optics
Abstract
Utilizing a doublet lens to correct the aberrations of a spherical mirror, a small f/8 telescope for visual use was designed and constructed. The lens has considerable negative power, so that it serves as a Barlow lens as well as a corrector.
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Jones, R. T.. 1976-02-01. A wide-field telescope with spherical optics. https://ntrs.nasa.gov/citations/19760012022
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