Talk:Radio telescope

Radio High‑importance

This article is within the scope of WikiProject Radio, a collaborative effort to improve the coverage of Radio-related subjects on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.RadioWikipedia:WikiProject RadioTemplate:WikiProject RadioRadio articles

High

This article has been rated as High-importance on the project's importance scale.

To-do List:

Here are some tasks awaiting attention:

Article requests : Create: Missing years and articles in radio, National Association of Radio Distress-Signalling and Infocommunications (Hungary)
Assess : Unassessed Radio articles; Unknown-importance Radio articles
Cleanup : Radio articles needing attention
Expand : Midweek Politics Bob Crane
Maintain : Portal:Radio
Stubs : Expand: Radio stubs
Verify : Unreferenced BLPs
Other : Collaboration of the Week:
Requests for Radio peer review:

Astronomy High‑importance

	Astronomy portal This article is within the scope of WikiProject Astronomy, which collaborates on articles related to Astronomy on Wikipedia.AstronomyWikipedia:WikiProject AstronomyTemplate:WikiProject AstronomyAstronomy articles
High	This article has been rated as High-importance on the project's importance scale.

Sample images[edit]

In addition to the images of the telescopes themselves, I'd like to see some examples of the output of radio telescopes. For example, a few of the more significant very early images, and some spectacular ones from today. Cheers - Gobeirne (talk)

Oh, I see what I'm after is at radio astronomy. Cheers - Gobeirne (talk) 02:52, 18 June 2008 (UTC)[reply]

Why are Radio Telescopes important? Is it that they are able to talk to the space craft due to the waves it gives out?' —Preceding unsigned comment added by 76.254.139.236 (talk) 02:31, 2 October 2009 (UTC) [reply]

Invention[edit]

There seems to be some confusion as to who "invented" the radio telescope - Karl Guthe Jansky or Grote Reber. I assume it arises from the fact that radio astronomy itself was never invented, it was discovered (serendipitously). Karl Jansky's antenna was directional and he used it to map the location of the strongest radio source (the center of the milky way). When he did that he was using it as a radio telescope. Unusual Telescopes by Peter L. Manly, page 76 has a good description of Jansky's first antenna and its usage as a telescope. Grote Reber would not be the "inventor" of the "dish" radio telescope either since the parabolic reflector antennas had been around since 1888 and Jansky proposed one for radio astronomy in 1935[1]. Reber was the first to build an antenna and receiver for the purpose of astronomy and the first to use a parabolic reflecting antenna for astronomy.[2]. Fountains of Bryn Mawr (talk) 23:34, 3 March 2010 (UTC)[reply]

Seeming contradiction about the largest radio telescope in Europe[edit]

The article states that the largest single radio telescope in the world is near Nizhnij Arkhyz in Russia, while the largest single radio telescope in Europe is another telescope near Effelsberg Germany. I don't have detailed maps of the mountains, but it looks like Nizhnij Arkhyz is on the north side of the Caucasus mountains, and therefore in Europe. 72.66.63.111 (talk) 21:54, 14 October 2011 (UTC)[reply]

Cool, can you add the reference and information to the page?AcuteAccusation (talk) 21:56, 14 October 2011 (UTC)[reply]

Well, I just looked at a map. I don't want to get into OR. 72.66.63.111 (talk) 23:25, 14 October 2011 (UTC)[reply]

Definition in lead sentence[edit]

The lead sentence says:

A radio telescope is a form of directional radio antenna used in radio astronomy

I understand how difficult it is to decide on a lead sentence for a scientific article like this. However I think this is slightly inaccurate. Most astronomical literature defines the radio telescope to include the radio receiver; for example: A radio telescope is a radio receiver that receives radio waves from astronomical sources in the sky. The antenna is usually the most visible and important part and should be included in the definition, but the receiver is an equally essential part of the instrument. Chetvorno^TALK 10:06, 25 February 2016 (UTC)[reply]

External links modified[edit]

Hello fellow Wikipedians,

I have just added archive links to 2 external links on Radio telescope. Please take a moment to review my edit. If necessary, add {{cbignore}} after the link to keep me from modifying it. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether. I made the following changes:

When you have finished reviewing my changes, please set the checked parameter below to true to let others know.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—^{cyberbot II}_{Talk to my owner:Online} 17:02, 27 February 2016 (UTC)[reply]

Big dishes[edit]

User:Margin1522, the fixed width doesn't work however we slice it, so I've dropped it to a normal gallery, which flows. Widefox; talk 14:43, 23 January 2017 (UTC)[reply]

Should NASA Deep Space Network dishes be in the Gallery?[edit]

I noticed that 3 of the antennas in the "big dish" gallery are spacecraft communication antennas at sites of NASA Deep Space Network (the DSS-14 at Goldstone, DSS-43 at Canberra, DSS-63 at Madrid). I know that these antennas are used for radio astronomy during spare time when they are not needed for spacecraft communication. However these are not primarily "radio telescopes"; they were built for spacecraft communication, and are funded by the NASA budget, not the NRAO. Their presence in this gallery may confuse general readers that communicating with spacecraft is "radio astronomy". There are plenty of other big dishes that are full-time radio telescopes. I suggest we remove these examples and reserve the gallery for actual radio telescopes. --Chetvorno^TALK 04:29, 17 December 2018 (UTC)[reply]

Anyone know anything about radio telescope receivers?[edit]

The article could use a section on radio telescope receivers, particularly the techniques used to achieve ultra low noise in the receiver's front end. I know they used to use ruby masers cooled with liquid nitrogen. Are these still used? --Chetvorno^TALK 04:13, 18 December 2018 (UTC)[reply]

Filled aperture[edit]

The term "Filled aperture" which appears three times on the page needs to be explained Peter Ells (talk) 20:32, 14 February 2020 (UTC)[reply]