A Photoelectric Guider for Astronomical Telescopes.
Abstract
A new and simple method of optical scanning with a rotating knife-edge, in combination with the modern electron multiplier phototube, makes practicable for the first time an automatic device for guid- ing astronomical telescopes. A comparatively simple guider, working in both right ascension and declina- tion and employing a single phototube, is performing satisfactorily in guiding the 100-inch reflector for high-dispersion spectrographic work. T1~e instrument compensates for fluctuations in the apparent posi- lion of the star due to "seeing" and for residual errors in the driving mechanism of the telescope
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1948
- DOI:
- 10.1086/144987
- Bibcode:
- 1948ApJ...107...73B