Talk:Very Large Telescope

message: If anyone has any information on when it was built that would be useful to put in the article.  Oh, and information on who the heck named the thing, too.  —Preceding unsigned comment added by Mbarbier (talk • contribs) 15:30, 6 July 2008 (UTC)
thread_title:  History 

message: What is the resolving power of the VLT at the distance of the Moon, in the visual spectrum?  The article Apollo Moon Landing hoax conspiracy theories used to say that it would be 130 meters but someone just changed it (with a reference) saying it would be 2 meters (0.001 arcsecond).  Bubba73 (talk), 18:12, 6 April 2009 (UTC)
thread_title: Resolving power

message: I think there is an error because if one takes 0.001 arc-minute=0.001' as resolution one gets about 112 meters because the observable length on the moon is r*tan(0.001')≈r*0.001:60*pi:180=112m with r=3.844*10^8 m the distance to the moon (tan(a)≈a for little angels). With a 0.001 arc-second resolution one would be able to see objects with diameters of 1.86 m, which apparently is not the case. Do you agree?  — comment added by Huldreich (talk • contribs) 18:38, 1 November 2014 (UTC)
thread_title: arc-minute

message: This is somewhat out of date and does not include the locations of the second generation instruments (e.g. SPHERE at UT3 Naysmith A, MUSE at UT4 Naysmith B).  It also doesn't include the coherent combined focus, the incoherent combined focus.  See http://www.eso.org/sci/facilities/paranal/instruments/overview.html.
I would update myself it but my wiki-foo is inadequate.  — Preceding unsigned comment added by Ajebson (talk • contribs) 10:07, 20 February 2014 (UTC)
thread_title:  Instruments section 

message: Headine-1:  ESO’s Very Large Telescope spots largest yellow hypergiant star
* http://www.astronomy.com/news/videos/2014/03/esos-very-large-telescope-spots-largest-yellow-hypergiant-star
QUOTE: “The European Southern Observatory’s (ESO) Very Large Telescope Interferometer (VLTI) has revealed the largest yellow star — and one of the 10 largest stars found so far. This hypergiant measures more than 1,300 times the diameter of the Sun and is part of a double star system, ...” [There is a lot of current interest in astronomy!] — Charles Edwin Shipp (talk) 00:03, 13 March 2014 (UTC)
thread_title:  VLTI discovers the largest yellow star, so far 

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thread_title:  External links modified 

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thread_title:  External links modified (January 2018) 

message: Seems like no one wanted to tackle the issue, so I want to try. What should Wikidata record state on the angular resolution telescope? For example, Extremely Large Telescope states 0.005 arcsecond. Simple. But the VLT here can be used in a couple of modes. The article states that the resolution of a single mirror mode (in which mode it's mostly used) is 0.05 arcsecond, just like FAQ. With all the telescopes combined, it used to state that we can reach 0.001 arcsecond. The FAQ that the section referenceshttps://www.eso.org/public/about-eso/faq/faq-vlt-paranal/, however, seems to only list 2 miliarcseconds (0.002 arcsecond), so for now I changed both the article and Wikidata value to 0.002 arcsecond.
My main question is, what value should be stated on Wikidata? 0.002 arcsecond, 0.05 arcsecond, or maybe something more elaborate? Piotrek54321 (talk) 14:38, 15 January 2019 (UTC)
thread_title:  Angular resolution on Wikidata 

message: It says that the telescope can see objects 4 billion times fainter than the human eye. Because of its isolation and high altitude, it would rank 1 in the Bortle Scale. This corresponds to a limiting magnitude of 7.6 - 8.0 (31.5 used 7.5 for calculations). 4 billion times fainter than 7.5 is a magnitude of 31.5 (using the formula 10-0.4 = brightness) and 4 billion times fainter than 8.0 is 32. I notice that the first value is the same as Hubble while the second is even more than Hubble. Does this mean that it had a limiting magnitude of ~31.75? PlanetsForLife 23:21, 17 June 2021 (UTC)
thread_title:  Limiting Magnitude of 31.5 - 32? 

message: The VLT is one of the most productive ground-based facilities for astronomy, second only to the Hubble Space Telescope 
ah yes that good ol' ground-based hubble. very productive one! 2600:1700:5660:1900:B03F:3D92:1137:EF24 (talk) 21:54, 20 February 2023 (UTC)
thread_title:  hubble