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公开(公告)号：FR2386812A1
公开(公告)日：1978-11-03
申请号：FR7809333
申请日：1978-03-30
Applicant: APPLIED RES LAB
Inventor： LINDBLOM PETER
Abstract: To eliminate astigmatism and coma in a spectrograph the distance between the entrance slot and a first concave mirror, as well as the relative angular positions of the entrance slot, the plane grating, the two concave mirrors and the focal plane are selected so as to satisfy the following conditions. +TR
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