Exact optics - V. Null tests for the mirrors of Schwarzschild's spectrograph camera
Abstract
Null tests are described for the strongly curved and highly aspheric mirrors of a set of `exact optics' spectrograph cameras based on the design of Schwarzschild. For f/1.0 and f/1.333 cameras having a focal length of 100mm the tests of each mirror are well within the Rayleigh limit and would permit construction on a larger scale. The ray-theoretical image diameters at the edge of the field of view of these two cameras are under 10μm unless they are scaled up to an aperture greater than 450mm.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- December 2007
- DOI:
- 10.1111/j.1365-2966.2007.12396.x
- Bibcode:
- 2007MNRAS.382.1630W
- Keywords:
-
- instrumentation: spectrographs;
- techniques: spectroscopic;
- telescopes