Talk:Radio astronomy

message: I altered the definition of VLBI to point out that VLBI  differs from conventional interferometry by the need to record data and ship it before it can be correlated. — Preceding unsigned comment added by 192.87.1.200 (talk) 20:03, 16 January 2003 (UTC)
thread_title: VLBI definition

message: UHF channel 37 is reserved in North America for radio astronomy.  I have linked here from North American broadcast television frequencies; can someone who knows better explain what the particular significance of that frequency is?  (I know it's an important spectral line of something, and that's as far as I can take it.)  18.24.0.120 04:50, 28 January 2004 (UTC)
thread_title: UHF 37

message: Earliest observation
In 1899, the eccentric Nikola Tesla, in accord with many other plans of his, planned to build a tower in a experimental station at Colorado topped by a copper ball that he would  turn into a sensitive radio telescope.Eric Brus, Richard Golob (1990). The Almanac of Science and Technology: What's New and What's Known. 530 pages. Page 52.Margaret Cheney, Robert Uth, Jim Glenn (1999). Tesla, Master of Lightning. 184 pages. Page 95. While investigating atmospheric electricity in 1900, Tesla noted repetitive signals that he deduced must be coming from a non-terrestrial source. Although Tesla mistook this to be radio communication from intelligent beings living on Venus or MarsTesla, Nikola, "Talking with Planets". Collier's Weekly, February 19, 1901. (EarlyRadioHistory.us) it may have been the earliest observation of an astronomical radio source (A 1996 analysis indicated Tesla may have been observing Jovian plasma torus signals).Corum, K. L., J. F. Corum, "Nikola Tesla and the Planetary Radio Signals".
Please use this to expand the article ... J. D. Redding ... — Preceding undated comment added 13:58, 19 May 2007 (UTC)
thread_title: Expansion material - re Tesla

message: I have expanded, arranged, and general edited this article to make it a more basic overview of the subject (Radio Astronomy). I am replacing the image 7c gal.gif because it does not fit WP:IMAGE criteria of a "good image", re: "large enough to reveal relevant detail" even when viewd at (full) size. Halfblue 18:25, 12 June 2007 (UTC)
thread_title: Re-arrangement, editing, and expansion of article

message: I rm'ed this diagram to talk because it makes no sense:
...i.e. it is all WP:JARGON. It either needs very good explanation or needs clearer version like the one seen at Telescope. 70.211.139.20 (talk) 20:42, 21 December 2009 (UTC)
replies: text: Restored. It is a valid diagram, although I'd agree there needs to be a bit of explanatory text for go with it (So... yes it's jargonny if you have no background in the topic). Maybe some savvy editor can add a bit to help explain ... or maybe I will later ... or ... :-) Vsmith (talk) 00:37, 22 December 2009 (UTC)
replies: text: ...err, encyclopedia's are written for people with no background in the topic. So a diagram that can only be read by someone with (substantial?) background in the topic is not encyclopedic (I have a pretty good background in this topic and still can't make heads or tails of it). The image has big problems re:Wikipedia:Images#Image choice and placement - the supporting text is about atmospheric opacity but this is not a an atmospheric opacity diagram such as this, the caption is more about SETI, and the image is hard to read unless you make it very big. This image seems to have been simultaneously dumped into three articles on the same day with out any modification as to its usage or description. It may be useful to someone who is looking for the particular information this graph may present but Wikipedia is not a textbook or scientific journal nor an image host. 75.224.213.249 (talk) 15:01, 22 December 2009 (UTC)
thread_title: Cleanups

message: Extragalactic Radio Sources, JG Bolton, 1969 -- this looks like something that can be used to expand the history section. 65.94.47.63 (talk) 11:58, 11 June 2011 (UTC)
thread_title:  history 

message: This may be of interest to the authors, Perytons are caused by microwave ovens near a radio telescope  
Article:
http://phenomena.nationalgeographic.com/2015/04/10/rogue-microwave-ovens-are-the-culprits-behind-mysterious-radio-signals
Study:
http://arxiv.org/abs/1504.02165
http://arxiv.org/pdf/1504.02165v1.pdf
Jcardazzi (talk) 11:06, 13 April 2015 (UTC)
thread_title:  Perytons origin 

message: Article does not seem to explain how the distances to various types of radio sources are or were determined, eg. is the doppler effect/red shift of radio spectral lines used ? How much is the Dispersion measure used (for pulsars and other objects) ? To what extent is finding an optical counterpart used ?- Rod57 (talk) 10:53, 15 February 2020 (UTC)
thread_title:  How are distances to radio sources estimated 

message: Should the VLBI section of the article include a mention of the emerging space- based VLBI? It may be relevant to discuss developing possibilities in radio astronomy technology.Audrey Buck (talk) 23:10, 5 September 2020 (UTC)
thread_title: Space-based VLBI

message: Hello to all ! As in subject, according to what space.com here says (i wish that the url is absolute), the project Diana by U.S. army  in 1946 declare the born of radio astronomy. why isn't even the project mentioned in the page ?  Windino [Rec] 22:28, 10 January 2023 (UTC)
replies: text: Interesting, but wrong. Radio astronomy was born with Jansky's announcement in April 1933. And Grote Reber was doing systematic radio astronomy by 1937. Fountains of Bryn Mawr (talk) 22:44, 10 January 2023 (UTC)
thread_title:  On This Day In Space: Jan. 10, 1946: ''Radio astronomy is born''