Theoretical study of image spots with the wide field camera and the implications for nebular spectrography

Details Theoretical study of image spots with the wide field camera and the implications for nebular spectrography Theoretical study of image spots with the wide field camera and the implications for nebular spectrography

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981tsis.rept.....l&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Image Resolution, Optical Correction Procedure, Schmidt Cameras, Spacelab, View Effects, Aberration, Asphericity, Computer Programs, Panoramic Cameras, Ray Tracing, Surface Distortion

Scientific paper

A Schmidt camera onboard Spacelab is considered. The operating spectral domain (120 to 350 nm) necessitates an optical correction for differential aberrations in function of view angle. A computer program (CASSE-TETE) is adapted. Coefficients of asphericity for a deformed mirror are calculated. Test spectrographs were made for 66 deg field of view at various wavelengths. The program CASSE-TETE gives spot diagrams similar to mirror manufacturer ones. It is appropriate for determining the optimal position of the mirror where image spots are as small as possible.

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