Abstract
A 1.2 m Echelle spectrograph designed for an image dissector tube with a 100 mm photocathode diameter is described. The spectral resolution is about 300 000 at 500 nm. Two mountings with different wavelength ranges are discussed. Formulas for elimination of astigmatism through non-collimated illumination of the dispersive components are given. By using many orders of the order sorter grating the distance between the orders of the Echelle grating can be increased. The spectral images are studied by ray tracing and illustrated by spot diagrams.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
