A simple coma corrector for off-axis guiding
Abstract
An adjustable coma and astigmatism corrector, using two small simple lenses, and suitable for correcting the image of an off-axis guide star up to about 1 deg from the axis of a paraboloidal reflector, is described. The on-axis image is not obscured, and retains its seeing-limited quality, achromatism and high efficiency.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- June 1980
- DOI:
- 10.1093/mnras/191.4.777
- Bibcode:
- 1980MNRAS.191..777W
- Keywords:
-
- Aberration;
- Image Enhancement;
- Optical Correction Procedure;
- Parabolic Reflectors;
- Reflecting Telescopes;
- Stellar Spectrophotometry;
- Astigmatism;
- Astrometry;
- Axes (Reference Lines);
- Instrument Errors;
- Lenses;
- Stellar Luminosity;
- Astronomy