Talk:ESPRESSO

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Espresso Wavelength Observation Range[edit]

In this article the table titled "MK-type stars with planets in the habitable zone" gives the Bolometric Luminosity of the M/K stellar type stars but wouldn't a Visual Luminosity measure be more relevant as ESPRESSO only observes in the 380-686 nm wavelength range, the visible light range? Otherwise, the table doesn't show the limitations for observations with the device. — Preceding unsigned comment added by 86.175.6.205 (talk) 12:53, 7 December 2014 (UTC)[reply]

The table is for comparison and reference purposes, if you find a credible source please do add it. Quantanew (talk) 17:27, 7 December 2014 (UTC)[reply]

External links modified[edit]

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External links modified[edit]

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Updated news page[edit]

It's apparent that the ESPRESSO consortium is focusing on updating the following site:

https://obswww.unige.ch/wordpress/espresso/ Kortoso (talk) 23:01, 2 June 2016 (UTC)[reply]

added. Quantanew (talk) 12:54, 3 June 2016 (UTC)[reply]

Comparison between ESPRESSO and CODEX[edit]

Besides the excellent tables, perhaps someone can offer some English text describing what this means. Why are we even discussing CODEX? It's 10 years away. Kortoso (talk) 16:31, 29 June 2016 (UTC)[reply]

Is just a comparison of capabilities. Quantanew (talk) 13:46, 30 June 2016 (UTC)[reply]

When is CODEX planned to see first light? Kortoso (talk) 17:49, 7 September 2016 (UTC)[reply]
No date set. E-ELT-Construction-Proposal Quantanew (talk) 13:25, 8 September 2016 (UTC)[reply]
Thanks! Although this proposal appears to be from 2011. There doesn't seem to be a date in the document. Kortoso (talk) 16:52, 12 September 2016 (UTC)[reply]
Way off in the future. ELT is not expected to be ready until 2024. CODEX may be ready by then, although it may be merged into another spectro project. By that time, ESPRESSO will already be churning out good data. Kortoso (talk) 17:45, 12 January 2017 (UTC)[reply]
By the way, CODEX is now canceled, expected to be replaced by another program some time in the future. For the time being, ESPRESSO will be the source for RT readings.
So I'm still not sure why CODEX's numbers need to be helpful. It's not contributing materially to this article.Kortoso (talk) 17:22, 8 December 2017 (UTC)[reply]
If CODEX was cancelled, then the comparison is useless. I would delete that table. BatteryIncluded (talk) 19:21, 8 December 2017 (UTC)[reply]
Though HIRES will be deployed on the ELT, CODEX is definitely going to happen; no one is even seriously suggesting that it will not be ready on schedule. — Preceding unsigned comment added by 86.132.186.101 (talk) 02:38, 17 May 2018 (UTC)[reply]

Web page[edit]

Is it just me or is the project's web page not functioning?

University of Geneva: ESPRESSO
Kortoso (talk) 16:49, 12 September 2016 (UTC)[reply]

As of 4 July 2017 link works just fine for me. Though not much seems to be happening on the project's web page. Maybe they're holding back until they verify some incredibly important discovery they've made, like Earth 2.0 or maybe they're busy scientists and not website designers, who knows? Basically, no problems as far as I can tell! — Preceding unsigned comment added by 86.175.90.200 (talk) 21:27, 4 July 2017 (UTC)[reply]

Status[edit]

This instrument continues to be a challenge regarding maintaining, updating and interpreting its current status. We have this to deal with:

Schedule: First light on Telescope: Second Part of 2016. ESPRESSO first light occurred on September 25, 2016, during which they spotted various objects, among them the star 60 Sgr A.[3][14]

No, for the references cited, there is no indication that the instrument has been mounted to any VLT telescopes, achieving first telescope light. Yes, it has seen first laboratory light: [1] but there's no indication that it is at Paranal.

The Oct 17 2016 article ESPRESSO Sees Light at the End of the Tunnel [2] refers entirely to events in the future.
The original 17 October, 2016 INAF article, in Italian, (its title also translating to "Light at the end of the tunnel") suggests that the instrument has been used to image 60 Srg. Puzzling and probably deserving a better translation.[3]
This 2017 article, also from INAF and in Italian, suggests that the ESPRESSO instrument is ready to be transported ("destination Paranal") to the VLT.[4]
So how could the instrument have been seeing "first telescope light" on the VLT last year when it was still in Geneva?
Can someone please help me understand this?
Kortoso (talk) 18:52, 12 October 2017 (UTC)[reply]
Shipped to Chile in August 2017. I doubt it will be mounted and calibrated by the end of this year, but that is their goal. Cheers, BatteryIncluded (talk) 03:11, 13 October 2017 (UTC)[reply]
Thanks for the clarification, BI. And edit, thanks for that too. :)
Kortoso (talk) 17:08, 13 October 2017 (UTC)[reply]
Such an imprtant project! When it starts working and reporting their results, we'll se a lot more activity in here. Cheers, BatteryIncluded (talk) 19:13, 13 October 2017 (UTC)[reply]
First light at last! [5]Kortoso (talk) 17:21, 6 December 2017 (UTC)[reply]

References

  1. ^ https://obswww.unige.ch/wordpress/espresso/2016/06/04/espresso-first-laboratory-light/
  2. ^ http://www.eso.org/public/announcements/ann16073/
  3. ^ http://www.media.inaf.it/2016/10/17/prima-luce-espresso-coude-lab/
  4. ^ http://www.media.inaf.it/2017/08/22/espresso-eso-vlt-esopianeti/
  5. ^ http://www.eso.org/public/news/eso1739/?lang

Status Rework[edit]

I have removed the following sentence. When you carefully read the press release, you notice that this only described the test of the relay optics from (one of) the UTs to the combined Coude focus. The instrument itself was not yet on the mountain. I agree, that this might be pretty confusing for people not familiar with the exact situation. Anyway, the stated ESPRESSO 'first light' was misleading. So I removed it. The 'first light' for some special part of the relay optic is IMHO not important enough to list here and explaining what exactly was tested for the first time on that date exceeds the reasonable limits of this article. First light on sky for the full instrument anyway has happened in the meantime. --184.189.232.71 (talk) 04:01, 31 July 2018 (UTC)[reply]

Removed: ESPRESSO first light occurred on September 25, 2016, during which they spotted various objects, among them the star 60 Sgr A.[1][2]

References

  1. ^ http://www.eso.org/public/usa/announcements/ann16073/ ESPRESSO Sees Light at the End of the Tunnel
  2. ^ http://www.media.inaf.it/2016/10/17/prima-luce-espresso-coude-lab/ ESPRESSO vede la luce in fondo al “tunnel”

4-UT mode[edit]

It is unclear by the text and cited references if the 4-UT mode is now active and fully functional; it was open to the scientific community in April 2019. I tagged it with a needed inline update. Cheers, Rowan Forest (talk) 15:07, 12 November 2019 (UTC)[reply]

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