| Autor: |
Mj.M. Fletcher, E. H. Richardson, Robert D. McClure, W.A. Grundman |
| Rok vydání: |
1984 |
| Předmět: |
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| Zdroj: |
International Astronomical Union Colloquium. 88:49-62 |
| ISSN: |
0252-9211 |
| DOI: |
10.1017/s0252921100098614 |
| Popis: |
A photoelectric radial-velocity spectrometer has been in use at the coudé focus of the 1.2m DAO telescope for several years. New improvements, resulting in a lowering of background noise, have allowed observations of stars significantly fainter than previously possible. Recent observations with the instrument at the coudé focus of the CFH telescope in Hawaii have shown that velocity measurements to better than 1 km s−1 accuracy are possible at 19th B magnitude. Various observing programs being carried out at DAO and CFHT are discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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