Dominion Radio Astrophysical Observatory
DRAO main building and John A. Galt Telescope
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| Organization | NRC Herzberg Astronomy and Astrophysics | ||||||||
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| Location | Okanagan Falls, British Columbia | ||||||||
| Coordinates | 49°19′15.6″N 119°37′26.4″W / 49.321000°N 119.624000°WCoordinates: 49°19′15.6″N 119°37′26.4″W / 49.321000°N 119.624000°W | ||||||||
| Altitude | 545 metres (1,788 ft) | ||||||||
| Established | 1960 | ||||||||
| Website | Official site | ||||||||
| Telescopes | |||||||||
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| DRAO Synthesis Telescope | radio interferometer |
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| John A. Galt Telescope | 26-m radio telescope |
| Solar flux monitor | radio solar telescope |
| CHIME | radio interferometer |
The Dominion Radio Astrophysical Observatory is a research facility founded in 1960 and located south-west of Okanagan Falls, British Columbia, Canada. The site houses three instruments – an interferometric radio telescope, a 26-m single-dish antenna, and a solar flux monitor – and supports engineering laboratories. The DRAO is operated by the Herzberg Institute of Astrophysics of the National Research Council of the Canadian government. The observatory was named an IEEE Milestone for first radio astronomical observations using VLBI.
The Synthesis Telescope consists of seven nine-metre, metal-mesh reflector antennas along a 600-m east-west baseline. The antennas are equipped with single-circular polarisation receivers at 408 MHz and dual circular receivers at 1420 MHz, from which all four Stokes parameters may be formed. A spectrometer may also be employed at 1420 MHz for study of the 21-cm hydrogen line. Maps of the sky are formed using the technique of aperture synthesis.
The John A. Galt Telescope consists of a single 25.6-metre-diameter (84 ft) metal-mesh antenna which can be equipped to observe at 408 MHz and at 1.5, 2.7, 4.9, 6.6, and 8.4 GHz, including the hydrogen line near 1.4 GHz, the OH lines around 1.6 GHz, and the methanol line near 6.6 GHz. The telescope, formerly simply referred to as the 26-metre Telescope, was renamed in honour of John A. Galt, first employee and former director of the DRAO, during a special ceremony in 2014.
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