Read about radio telescope | 8 Discussions | Page 1

  1. Michael Price

    A Resolving power of a radio telescope array: Quantum or classical?

    My question is: is the resolving power of an array of radio telescopes a quantum or a classical effect? The increase in resolving power of a single telescope, as aperture size increases, is easy to explain in terms of Heisenberg's uncertainty principle. But when we go an array of telescopes are...
  2. J

    Stargazing Phase of radio waves received by a radio telescope dish

    I understand that a radio telescope can be tuned to receive radio waves generated by neutral hydrogen atoms present in galactic gas, for example, within the spirals of the milky way. I think I understand that the incoming radio waves will be a mixture of red- and blue-shifted photons depending...
  3. P

    Stargazing How is noise removed in radio telescopes?

    For an optical telescope, light pollution is a problem and that's why put ground-based telescopes in remote places where there isn't much light. However, aren't we bombarded by radio waves from satellites for our phones and TVs? How do radio telescopes remove those?
  4. E

    RF and MW receivers' sensitivity

    I'm currently working on a novel RF and MW sensor and I wanted to know whether there is a paper that shows the current very best receiver sensitivity for a range of wavelengths in the RF-MW range in dBm preferably so I can directly compare to my device.
  5. Clear Mind

    Stargazing Radio telescope aberration

    I was studyng my exam of astrophysics laboratory, while treathing the optical aberration i've wondered: does radio telescope have aberration? Is a paraboloid antenna in a single dish affected by coma? and the radio telescope made by arrays of resonant structures? Maybe those are silly...
  6. N

    I If radiowaves are reflected from objects (i.e planets)...

    ...and they can penetrate a bit in the surface, we could image the subsurface right? I do not see the problem... Help please!
  7. T

    Stargazing New Radio Telescope is World's Largest

    World's largest radiotelescope just completed. http://news.xinhuanet.com/english/2016-07/03/c_135485643.htm
  8. Ellie Snyder

    Black hole calculations, the "Event Horizon Telescope"

    Homework Statement Soon astronomers will be imaging the “shadow” of light from the event horizons of black holes. Since black holes are very small, this achievement seems impossible. Nevertheless, it is possible for three reasons: 1. Supermassive black holes have large event horizons. 2. Radio...
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