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Bruce Elsmore Created 2026-10-18 Updated 2026-11-05
Bruce Elsmore coauthored the account of the Cambridge One-Mile radio telescope's operation. The instrument used separated antennas and Earth rotation to sample an extended effective aperture rather than constructing a single filled reflector of that diameter.
The measured correlations constrain spatial structure through aperture synthesis. Obtaining an image requires combining the samples with their baseline geometry and a consistent calibration. The operational paper records the practical link between this mathematical reconstruction and a functioning astronomical instrument.[ref]
The Operation of the Cambridge One-Mile Diameter Radio Telescope by Bruce Elsmore and others. pp. 87–96: instrument operation and synthesis observations
One-Mile Telescope 2026-10-18
The One-Mile Telescope used three steerable 60-foot dishes: two fixed, one rail-mounted. The movable–fixed pairs supplied two baselines simultaneously. Twelve-hour tracks at successive rail positions sampled projected spacings. Phase-switching receivers measured in-phase and quadrature correlations; adjustable delay and phase rotation compensated tracking.[ref]
The Operation of the Cambridge One-Mile Diameter Radio Telescope by Bruce Elsmore and others. Elsmore et al. (1966), sections 1–2, pp. 87–92, Figures 1–2
The readout was correlation versus time. Reference-phase subtraction should leave constant point-source phase; position offsets produce predictable variation. A source near the field's declination supplies a collimation check. Structure, instrumental error and sampling artefacts need separating.[ref]
The Operation of the Cambridge One-Mile Diameter Radio Telescope by Bruce Elsmore and others. Elsmore et al. (1966), section 4(a), p. 93; Appendix, p. 95
Sidney Kenderdine Created 2026-10-18 Updated 2026-11-05
Sidney Kenderdine coauthored the description of the Cambridge One-Mile radio telescope's operation. The instrument uses aperture synthesis, combining measurements from separated antennas to imitate an aperture much larger than an individual receiving element.[ref]
The Operation of the Cambridge One-Mile Diameter Radio Telescope by Bruce Elsmore and others. Summary and instrument operation: aperture synthesis and observing arrangement
Changing projected baselines supplies different spatial information about the radio sky. Combining it requires controlled receiver phases and a reconstruction method, connecting electronic measurement with angular resolution rather than relying only on the size of one dish.