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The Llanherne VHF Radio Telescope

  • R. H. Ferris (a1), P. J. Turner (a1), P. A. Hamilton (a1) and P. M. McCulloch (a1)

Extract

The Llanherne telescope is a meridian transit instrument with an instantaneous bandwidth of two octaves in the range 35 to 150 MHz, and was constructed primarily for studying the low frequency properties of pulsars. The antenna is a 78 × 156 metre filled aperture phased array comprising 4096 wire dipole elements arranged in a 64 × 64 matrix. Uniform illumination of the elements produces a single pencil beam response which is scanned electronically along the meridian from Declination -90° to +30°. The beamwidth at 100 MHz is 1 degree in right ascension and two degrees sec(Dec.) in declination and varies proportionally with wavelength, giving a transit time of 4 sec(Dec) × 100/f(MHz) minutes between half power points.

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Copyright

References

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Baars, J. M. W., Ganzel, R., Pauliny-Toth, I. I. K., and Witzel, A., Astron. Astrophys., 61, 99 (1977).
Erickson, W. C., and Fisher, J. R., Radio Sci., 9, 387 (1974).
Little, A. G., Aust. J. Phys., 11, 70 (1958).
McConnell, D., and Ellis, G. R. A., ‘Fine Structure in Fast Drift Storm Bursts’, submitted to Solar Phys. (1980).
Turner, P. J., ‘A Disk Based Observing System for a Radio Telescope’, submitted to Aust. Comp. J. (1980).
Vitkevich, V. V., Glushaev, A. A., Ilyasov, Yu. P., Kutazov, C. M., Kuzmin, A. D., Tyatsin, M. M., Alexeev, I. A., Bunin, V. D., Novojenov, G. F., Pavlov, G. A., and Solomin, N. S., Preprint, Lebedev Physical Institute, No. 78 (1976).
Wills, B. J., Astrophys. J., 180, 335 (1973).

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