DAL Sessions Schedule - IVOA May 2023 Interoperability Meeting

* back to main programme page *

Schedule Summary
Session DateTime UTC UTC-07:00 UTC-04:00 UTC+02:00 UTC+08:00 UTC+10:00
Victoria BC/Pasadena Washington DC Bologna Perth/Beijing Canberra
DAL 1 9 May 09:00 9 May 02:00 9 May 05:00 9 May 11:00 9 May 17:00 9 May 19:00
Conesearch splinter 9 May 10:30     9 May 12:30    
DAL 2 11 May 14:00 11 May 07:00 11 May 10:00 11 May 16:00 11 May 22:00 12 May 00:00

Notes and session video recording are linked below each session schedule table.


Time: Tuesday 9 May 11:00 CEST [session #6]

Location: Plenary room

Speaker Title Time Material Abstract
Joshua Fraustro Python TAP implementation at MAST: Lessons Learned 12'+3' pdf STScI will be launching its overhauled TAP service rewritten as a Python-based microservice this summer.

We’ll cover the challenges, quirks, and lessons learned implementing a set of standards that continue to evolve while attempting to maintain years of client compatibility.

Patrick Dowler TAP-next: user-managed persistent tables 15'+14' pdf CADC/CANFAR has developed extensions to TAP-1.1 to support users and projects creating and managing their own tables in a TAP service. There is interest from several other community members to adopt this and it seems like a useful set of optional features to be specified in TAP-next aka TAP-1. There are open questions and some rough spots that need work so this talk is seeking "agreement in principle".
Tamara Civera ADQL vector functions implementation in the Observatorio Astrofísico de Javalambre (OAJ) 12'+3' pdf The Observatorio Astrofísico de Javalambre (OAJ, Teruel, Spain) is carrying out two large area multiband photometric sky surveys, J-PLUS (Cenarro et al. 2019) and J-PAS (Bonoli et al. 2021), covering the entire optical spectrum using narrow and broad band filters. To publish these surveys data, the CEFCA Catalogues portal (archive.cefca.es) has been implemented, offering web user interface services as well as VO services like SIAP, SCS, TAP and catalogue and images HIPS. Surveys data includes the catalogues of the sources detected in the images with the photometry for each object in the different bands measured using different methods. All this information is stored in tables containing massive amounts of vectors.

In this contribution we present our implementation of some ADQL vector functions, and a proposal to add to ADQL a new concept called "Enumerations" which can be used as constants in queries and can make the access to the data of those vectors easier for the user.

Grégory Mantelet ADQL-next 15+14 pdf ADQL-2.1 is currently under RFC and will hopefully become a REC in some weeks. So, it is now the time to prepare the next version. Some features were already proposed for ADQL-2.1 and unfortunately postponed. So, let's talk about them, but also share any other ideas for next version of ADQL. This talk will start with a brief listing of already known propositions and then will be completely open to discussion.
Moderator: James, Notetaker: Grégory

notes: PDF _( live notes, should expire around end of June 2023)_

Session Recording (mp4 ~230MB)

ConeSearch Splinter

Time: Tuesday 9 May 12:30 CEST [lunchtime session]

Location: Plenary backstage area

Discussion on next steps for ConeSearch - planning a small update before the big step to add time. Should UCDs be changed to v1.1 in the update?

Note: This session may not be on zoom - if you would like it to be, please contact James or Grégory.

notes: PDF _( live notes, should expire around end of June 2023)_


Time: Thursday 11 May 16:00 CEST [session #16]

Location: Plenary room

Speaker Title Time Material Abstract
Petr Skoda Echelle spectra and the ways toward their VO interoperability 12'+3' pdf Echelle spectrograph is one of the most precise astronomical instruments delivering the highest spectral resolution and widest spectral range together. Currently, it is the crucial instrument for exoplanet research capable of delivering radial velocity precision of the order of several meters per second. This is unfortunately achieved at the expense of extremely complicated reduction procedures resulting in a zoo of custom storage formats requiring individual programmatic access to achieve the maximum precision. As there is no generally accepted format for interoperability of echelle spectra, the providers convert the results in a format of 1D vector as in single-order spectra leading to the severe degradation of its potential. As the future exoplanet missions as e.g., PLATO are inherently dependent on a multitude of different ground-based observatories equipped with echelle spectrographs, there is a great challenge for the IVOA to develop the proper interoperable data format and access patterns (supported by massive queries and server-side processing). We will give an overview of the problems in echelle spectroscopy and suggest possible ways for an IVOA standard.
Margarida Castro Neves LineTAP implementation in SPLAT-VO 12'+3' pdf  
Patrick Dowler DALI 12'+3' pdf  
François Bonnarel Transition from SIA to DAP and SODA 1.1 12'+3' pdf The talk insists on a few strong drivers for evolution of these standards and proposes a roadmap
Grégory Mantelet Simbad's Cone Search implementation 12'+3' pdf Simbad has always provided a Cone Search service following the SCS-1.0 standard. However, this service became a bit oldish, especially in term of performances. New features are also required by some users. So, recently a new implementation of the Simbad's Cone Search is online with a different technology and new features. It also gives the occasion to make a step forward Cone Search 1.1 by following some modifications already listed in the last Working Draft and by introducing few other desired features.
Various DAL RFC Overview 12'+3'



Lightning talks on each RFC currently open
Moderator: Grégory, Notetaker: James

notes: PDF _( link to live notes, should expire around end of June 2023)_

Session Recording (mp4 ~275MB)

* back to main programme page *


Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf IVOA_May11_DAL.pdf r1 manage 47.0 K 2023-05-15 - 09:33 GregoryMantelet  
PDFpdf IVOA_May9_DAL.pdf r1 manage 48.6 K 2023-05-15 - 09:31 GregoryMantelet  
PDFpdf IVOA_May9_DAL_Splinter.pdf r1 manage 37.7 K 2023-05-15 - 09:32 GregoryMantelet  
PDFpdf LineTAP_Interop23.pdf r1 manage 3569.8 K 2023-05-11 - 10:37 MargaridaCastroNeves SPLAT Implementation of LineTAP
PDFpdf SIA-DAPSODA.pdf r1 manage 2414.1 K 2023-05-11 - 13:19 FrancoisBonnarel  
PDFpdf adql_next.pdf r5 r4 r3 r2 r1 manage 717.1 K 2023-05-09 - 13:17 GregoryMantelet  
PDFpdf adql_rfc.pdf r1 manage 290.7 K 2023-05-08 - 12:31 GregoryMantelet  
PDFpdf dal-WD-DALI-1.2.pdf r1 manage 124.9 K 2023-05-11 - 12:11 PatrickDowler  
PDFpdf dal-tap-next-youcat.pdf r2 r1 manage 139.6 K 2023-05-09 - 10:05 PatrickDowler  
PDFpdf echelle.pdf r1 manage 4074.0 K 2023-05-11 - 10:24 PetrSkoda  
PDFpdf mast-tapservice-fraustro.pdf r1 manage 7861.6 K 2023-05-08 - 12:11 TomDonaldson  
PDFpdf simbad_conesearch.pdf r4 r3 r2 r1 manage 960.6 K 2023-05-11 - 13:06 GregoryMantelet  
PDFpdf skoda-echelle.pdf r1 manage 3919.3 K 2023-05-10 - 12:33 PetrSkoda  
Edit | Attach | Watch | Print version | History: r30 < r29 < r28 < r27 < r26 | Backlinks | Raw View | Raw edit | More topic actions
Topic revision: r30 - 2023-05-16 - JamesDempsey
This site is powered by the TWiki collaboration platform Powered by Perl This site is powered by the TWiki collaboration platformCopyright © 2008-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback