公开(公告)号：SE7703880A

公开(公告)日：1978-10-05

申请号：SE7703880

申请日：1977-04-04

Applicant: APPLIED RES LAB

Inventor： LINDBLOM K P

IPC: G01J3/18

CPC classification number: G01J3/1804

公开(公告)号：SE7703880L

公开(公告)日：1978-10-05

申请号：SE7703880

申请日：1977-04-04

Applicant: APPLIED RES LAB

Inventor： LINDBLOM K P

IPC: G01J3/18

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