Questions tagged [radio-telescope]
Questions related to the instruments used to perform observations in the radio frequency range.
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How can we install a radar on radio telescopes like FAST or GMRT?
Recently I came across an article mentioning that ever since the failure of Arecibo telescope, we only have one asteroid radar imaging telescope which is Goldstone observatory.
The article also ...
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What is the significance of the velocity resolution in spectral line observations using radio interferometry?
I've always struggled to conceptualize the term "velocity resolution" in spectral observations. In principle, it is simple to calculate. For example, one can take the spectral width and ...
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What is the significance of using baseline pairs in radio interferometry?
Radio interferometry utilizes arrays of smaller telescopes that are linked together to synthesize a larger aperture telescope. Astronomical radio observatories, such as the Very Large Array in New ...
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Open source library to calculate image from signals of a distributed set of radio dishes?
The National Radio Astronomy Observatory's Q&A "How To Make Images With a Radio Telescope" says
The most straightforward way to make a radio image with your satellite antenna system, ...
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Can one build a distributed radio telescope?
I understand some radio telescopes are built as arrays of receivers. Could one build an array from a heterogeneous set of receivers in scattered locations? Suppose a large number of persons each ...
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Could we carve a large radio dish in the Antarctic ice?
Could we carve a large radio dish in the Antarctic ice that could replace the Arecibo Observatory? Could this work, and what would be some potential limitations?
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Recommend a radio calibration target for amateur radio telescope
I have a small antenna and radio system that can receive frequencies between 1MHz and 1GHz. The system has a discone antenna. I plan to do some aperture synthesis based on the daily rotation of the ...
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Opening VLA Export Format data on Windows
I recently downloaded some data from the NRAO archive.
It came as a file in the "VLA export format" with the extension .xp1. From what I gather I can open this using some software called ...
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Maritime telescopes: Stabilisation requirements for optical vs. radio telescopes?
SOFIA stands for Stratospheric Observatory for Infrared Astronomy. She says:
My telescope stays stable with a spherical bearing, shock absorbers, and gyroscopes.
I suppose a similar system would ...
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Current topics on Radio Astronomy and looking for advice
Background and Question: I'm an undergraduate student interested on Radio Astronomy. I consider myself enthusiastic about it and I project myself following this "path" so I'd like, ...
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Do ASKAP and ALMA have "fast dump" interferometric modes? Can they see and perhaps report Fast Radio Bursts in real time?
Chatterjee et al 2017 The direct localization of a fast radio burst and its host nicely shows a VLA detection of a repeating FRB in 5 millisecond steps nicely demonstrating the dispersion slope ...
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The role of 'the interference of waves' in VLBIs'
I've been trying to find out how VLBIs work. It says in this book I've read that many radio telescopes around the world work in tandem to use the interference of waves to get a clearer picture of ...
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Is there any role today that would justify building a large single dish radio telescope to replace Arecibo?
It seems that most of the modern radio astronomy instruments and observations that make the news are interferometers or phased array systems of one kind of another.
Is there any application left for ...
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Building a floating, ocean-going giant radio telescope?
Given the loss of the Arecibo telescope: Is anybody aware of any efforts or studies towards a floating, ocean-going radio telescope of with 500m diameter or more?
The idea is floating (pun intended) ...
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Hypothetical CMB space telescope design problem, received power from extended thermal source versus receiver front end NEP?
Consider the example of a large radio dish antenna in space equipped with a heat shield protecting it from the Sun. Let's say the amplifiers front-end effective temperature (for purposes of noise ...
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