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ESO ARCHIVE COMMUNITY FORUM


The ESO Archive Community Forum is a platform for sharing ideas and methods, asking questions and sending feedback and suggestions on how to improve and use the new ESO Archive Science Portal and on how to  gain Programmatic and tool access to the archive science portal. 


Contributions from all users are encouraged, also without registration.


To participate in the knowledge exchange, please choose an appropriate Forum from the right panel or from the drop-down menu on the top of this page and write a message. An agent from the ESO Archive Science Group (ASG) will receive, moderated it, and make it public as soon as possible.


Currently, open forums are:

The ESO Archive Community Forum also provides help pages about the data access and retrieval, and about the data types used in the ESO Archive.


Please be aware that the channel to receive help concerning data access, data reduction and pipelines, and quality of products is provided by the ESO helpdesk.

Please observe the usual basic etiquette rule of remain professional, respectful, and courteous at all times.

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VVVX DR1.1 published: releasing the entire Ks time series

Archive Science Group 3 months ago 0

VVVXDR1.1

The VISTA Cycle 2 ESO Public Survey project -VVV eXtended- PI D. Minniti, P. Lucas, is carried out with VIRCAM on VISTA in the JHKs filters and covers a total of ~1540 deg2 of the southern Galactic plane.

The VVVX DR1.1 complements DR1 by mainly providing i) the missing Ks time series and ii) the source lists generated from the pawprints published in DR1, which were observed between July 2016 and March 2018. The released data total about 9 TB. Science products generated from observations in the time interval from April 2018 to October 2019 are accessible in the already published DR2 release.


The time series data were taken in 'THIN' conditions, thus data with photometric zero points within 0.25 mag of the seasonal average value are accepted. The rather relaxed requirement on the image quality (seeing < 2.0 arcsec) has proven useful to deliver photometry for the bright stars also, that otherwise are saturated in data acquired with better seeing conditions.


Data are available via the Archive Science Portal or programmatically.More information regarding the release content is available in the documentation.

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New Gaia-ESO radia velocity catalogue released (DR4.1)

Archive Science Group 3 months ago 0

GAIADR4.1

Gaia-ESO is a Public Spectroscopic Survey carried out with GIRAFFE and UVES on the VLT between 2012 and 2018. The survey targeted more than 100,000 stars, with 115,000 actually observed by the end of the survey. These stars are selected across all major components of the Milky Way, from halo to star-forming regions, with the goal of providing a homogeneous overview of their kinematics and elemental abundance distributions.

With DR4.1, the Gaia-ESO team publishes a catalogue of radial velocities of more than 110,000 stars, covering 97% of all the objects whose spectra were previously published in December 2020 (DR4). The catalogue releasing the parameters for all the observed stars and the remaining 1D stacked spectra for additional 600 unique targets will be published in the forthcoming DR5. The full description of the current published catalogue and of the pipeline used to determine radial velocities can be found in the detailed release document.

The catalogue preview (histograms and metadata) can be found here. An example of a programmatic access query to the catalogue is available here. The catalogue can be queried also via the Catalogue Facility.

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Second data release from the VISTA Cycle 2 ESO Public Survey VVVX

Archive Science Group 3 months ago updated 3 months ago 0

VVVXDR2

The VISTA Cycle 2 ESO Public Survey project -VVV eXtended- PI D. Minniti, P. Lucas, is carried out with VIRCAM on VISTA in the JHKs filters and covers a total of ~1540 deg2 of the southern Galactic plane.

This second data release contains observations taken between April 2018 and October 2019. They consist of both multi-filter JHKs observations and time series Ks data with photometric limit reaching typically Ks=17.5 AB mag.


The survey data in Ks that were taken prior to April 2018 remain to be released (VVVX DR1 contained data from the multi-colour JHKs OBs and J-only OBs). The VVVX team is currently working to releasing these data as soon as possible, in order to provide a continuous time series.


Data are available via the ASP and programmatically: 10776 tile images plus their associated weight maps and single-band source catalogues. In addition, the release contains the 64716 pawprint images.

More details can be found in the release description.

+1
Completed

Polygon search on dbo.raw

Mathieu 3 months ago updated 3 months ago 6

Hi,

When I perform an ADQL query on ivoa.ObsCore with a polygon search, I get the same results as with the graphical search tool (650 hits).

SELECT *
FROM ivoa.ObsCore
WHERE CONTAINS(POINT('J2000', s_ra, s_dec), POLYGON('J2000', 93.47786,-63.86,87.47072,-63.91703,88.3048,-62.10095,94.85457,-58.15919,97.7867,-61.61193))=1
AND instrument_name='GIRAFFE'

When I try to do the same query on dbo.raw or dbo.ssa, I obtain an error saying 'Latitude values must be between -90 and 90 degrees'.

SELECT *

FROM dbo.raw

WHERE CONTAINS(POINT('J2000', ra, dec), POLYGON('J2000', 93.47786,-63.86,87.47072,-63.91703,88.3048,-62.10095,94.85457,-58.15919,97.7867,-61.61193))=1

AND instrument='GIRAFFE'

Why is it happening? Is my second query fixable?

I used the graphical search tool to draw the polygon and know the RA, DEC couples defining it.

Thanks in advance

Questions
Answer
Archive Science Group 3 months ago

Hi,

to avoid the error, please add the following constrain:

AND dec BETWEEN -90 and 90

in this way you get 7 files as result.

The reason is that the raw database is not as curate as the products one, we are going to look into this, thanks for reporting!

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Third Release of the PESSTO Multi-Epoch Catalogue

Archive Science Group 6 months ago updated 6 months ago 0

PESSTO

A new version of the PESSTO Multi-Epoch Photometric Catalogue provides photometric lightcurve coverage for the Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) targets for which follow-up lightcurves have been completed.This catalogue complements and completes the DR4 release announced in March 2021.

Photometric lightcurves for a total of 95 objects are now provided, 65 more than in the previous release (the lightcurves of 2 previously released transients have been removed from the catalogue as they do not qualify as PESSTO key-science targets).

This PESSTO public survey data release (DR4.1) is accompanied by a comprehensive description of the lightcurve catalogue.

Data are available via the ESO Catalogue Facility, or programmatically(1), or via the Science Portal. Specifically, the catalogue preview gives instantaneous access to the histograms of all the catalogues columns. The programmatic link brings to a query example to find the lightcurve of SN2018ec, object shown in the image which also illustrates the serendipitous discovery of AT2018cux.

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Third and Final Data Release of the Large Early Galaxy Census (LEGA-C) Spectroscopic Public Survey Published

Archive Science Group 6 months ago updated 6 months ago 0

LEGA-C

The third and final data release of the Large Early Galaxy Astrophysics Census (LEGA-C, ESO programmes 194.A-2005, 1100.A-0949) is now available. The LEGA-C public spectroscopic survey targets the 1.5 deg2 of the COSMOS field (RA=10hr, Dec=+2 deg) with the VLT VIMOS multi-object spectrograph from December 2014 to May 2018.

This data release contains the science products for the full survey, doubling the sample size with respect to the second data release of 2018. It consists of 4081 spectra of 3741 unique galaxies in the redshift range 0.6 < z < 1.0, with typical continuum S/N ≃17, wavelength coverage 6000-9000 Angstrom and spectral resolution of R~3500. The science data products are fully reduced with a custom-built pipeline. In addition to the 1D spectra, the data release contains a catalog with spectroscopic redshifts, emission line fluxes, Lick/IDS indices, spatially integrated stellar and gas velocity RMSs (line widths). 

The catalogue also provides additional structural parameters measured from HST images and dynamical mass measurements. More information is available in the accompanying release documentation.

All data are publicly accessible from the Science Portal or programmatically. In addition, the catalog can be browsed via the Catalogue Facility or .

News
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Third Data Release from the MATISSE/OCA-ESO Project (AMBRE): HARPS catalogue

Archive Science Group 7 months ago 0

AMBREDR3

The AMBRE collaboration between the Observatoire de la Côte d'Azur (OCA, Nice) and ESO has the goal to analyse the wealth of stellar spectroscopic data in the ESO science archive using the MATISSE parametrisation algorithm to derive stellar atmospheric parameters (Recio-Blanco et al., 2006, MNRAS 370, 141, Worley et al. 2012, A&A 542A, 48, de Laverny et al. 2012, A&A 544A, 126, De Pascale (2014, A&A...570A..68).

This data release provides stellar radial velocity, effective temperature, surface gravity, mean metallicity and enrichment in alpha-elements for about 93116 stellar objects observed between October 2003 and October 2010 using HARPS (378 nm – 691 nm). More information can be found in the related release documentation.

The catalog of stellar parameters is available via the dedicated Catalog Query Interface or programmatically.

News
0
Completed

Second Data Release from the MATISSE/OCA-ESO Project (AMBRE)

Archive Science Group 9 months ago updated 9 months ago 1

AMBRE-UVES

The AMBRE collaboration between the Observatoire de la Côte d'Azur (OCA, Nice) and ESO has the goal to analyse the wealth of stellar spectroscopic data in the ESO science archive using the MATISSE parametrisation algorithm to derive stellar atmospheric parameters (Recio-Blanco et al., 2006, Worley et al. 2012, de Laverny et al. 2012, Worley et al. 2016).

This data release provides stellar radial velocity, effective temperature, surface gravity, mean metallicity and enrichment in alpha-elements for about 6600 stellar objects observed between March 2000 and November 2010 using the VLT/UVES spectrograph. 51897 stellar spectra were analysed in total, resulting in the complete parameter set for about 20%. More information can be found in the related release documentation.

The catalog of stellar parameters is available via the dedicated Catalog Query Interface or programmatically.

News
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First data release from the GALACTICNUCLEUS survey

Archive Science Group 9 months ago updated 9 months ago 0

GALACTICNUCLEUS

The goal of GALACTICNUCLEUS survey (ESO Large Programme 195.B-0283, PI Rainer Schödel) is to build a single-epoch high angular resolution (0.2”) source catalogue of the Galactic Center in the near infrared bands J,H,Ks. Data were acquired with HAWK-I between June 2015 and June 2018. They covered seven regions spread over the nuclear stellar disk, the inner Galactic bulge and the transition region between them, for a total area covered of about 0.3deg2. The final catalogue includes accurate PSF photometry for 3.3x106 stars. The 5-sigma limiting AB magnitude for the different NIR bands are J~22mag, H~21mag and Ks~21mag. The released catalogue also provides absolute coordinates for all the sources.

In addition to the source catalogue, this data release includes images and related error maps from which the catalogue was extracted.

More information is available in the release documentation, data are downloadable via the ESO Science Portal or programmatically, the catalogue can be queried via the Catalog Facility or TAP.

News
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Release of pipeline processed ESPRESSO 1D spectra products

Archive Science Group 9 months ago 0

ESPRESSO

This data release provides access to reduced scientific data obtained with ESPRESSO. This instrument is a highly-stabilised fibre-fed echelle spectrograph that can be fed with light from either a single or up to four Unit Telescopes simultaneously. It is installed at the incoherent combined Coudé facility of the VLT.

Nearly 2000 spectra obtained in all instrumental modes (HR, UHR, and MR) from the start of operations until March 2020 are now published via the ESO archive. The data consist of extracted, wavelength-calibrated and flux-calibrated 1-dimensional spectra with merged echelle orders. If several exposures on the same target are executed within the same observing template, the extracted and flux-calibrated spectra of the single exposures are combined into a co-added spectrum with increased signal-to-noise ratio. The combined spectrum becomes the primary product, while the single spectra are made available as associated files. The reduced science spectra come with an associated set of ancillary information which are described in detail in the accompanying release description.

The ESPRESSO data collection will grow with time. As new ESPRESSO data are acquired at the observatory, the reduced products will become available in monthly release cycles as soon as they are processed. The data products can be queried and downloaded using the ESO Archive Science Portal or the programmatic access. More details about the data can be found in the published data release description. The 1D spectra are stored in a tabular format following the established standard for ESO science data products. Instructions on how to read or display the spectra can be found in the 1D spectrum data format help page.

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