2024-03-28T21:28:10Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00019819
2023-01-26T05:13:01Z
879:1183:1640:1731
IMPROVEMENT OF THE HIGH-RESOLUTION INTERFEROMETER AT 9.4 GC/S
TANAKA, Haruo
KAKINUMA, Takakiyo
open access
The Toyokawa compound interferometer at 9.4 Gc/s has been improved in three ways for increasing sensitivity. (1) 16 dishes of 1.2 meters in diameter were replaced by 2-meter dishes. The difficulty arising from the sharpness of the beam has been overcome by applying a special step-drive system. (2) Low loss circular waveguides have been used for branch lines longer than 10 meters. The transmission loss has not increased though a simple branch line system is used instead of using 2 preamplifiers. The single output terminal thus obtained has enabled us (3) to use an elaborate low-noise preamplifier. T. W. T. is being used for routine observations of the sun, and a maser amplifier is prepared for the reception of cosmic radio emission. The explanation is given of the method of observing circularly polarized components, and finally a future plan of extending base line is briefly described.
The Research Institute of Atmospherics, Nagoya University
1965-03-25
eng
departmental bulletin paper
VoR
http://hdl.handle.net/2237/21872
https://nagoya.repo.nii.ac.jp/records/19819
0077-264X
Proceedings of the Research Institute of Atmospherics, Nagoya University
12
27
34
https://nagoya.repo.nii.ac.jp/record/19819/files/proria_12_27.pdf
application/pdf
1.2 MB
2018-02-21