Author(s): T. El-Dessouki, M. Ghobashy and M.S. El-Toukhy
Article publication date: 1987-04-01
Vol. 5 No. 1 (yearly), pp. 137-147.
176
Keywords
rifle telescope, ray tracing, eye-relief
Abstract
Two approaches have been made to construct a rifle telescope using different objectives. Following a third-order analysis the results of ray tracing through several examples are presented. The total length of the telescope is 233 mm, whereas the eye-relief is 93 mm. For the whole system, at a field angle 2.5 degree, the percentage distortion is 0.3%. Tables of design parameters for aplanatic telescopic systems with angular magnification gamma=5 are presented.