TCG Meeting (online) - Thursday September 26 2025 @ 20:00 UTC

Attendees

• Attendees : Adrian, André, Brigitta, Francesca, Gilles, Grégory, Jesus, Judy, Marco, Mark A, Mark CD, Mark K, Pierre, Renaud, Sébastien, Steve, Stéphane, Tamara, Tess, Tom

• Regrets : Bruno, Janet, Markus, Yihan

Actions

• OPEN - put together a template for call for proposals; model after DAL (postponed)
  • Do this for the next interop
• NEW - (ALL) brainstorm within groups about contributing to the data model usage hack-a-thon/workshop proposal
  • Haven't heard contributions from other than DM. Won't have hackathon at net interop due to shortness of meeting anyway.
• NEW - (MM?) put issues on DocStd git repo and works towards a F2F meeting with TCG (interop?) (open)
  • Let Marco know if you'd be interested in this discussion

Agenda

• Review actions

• Roadmap 2025A
  • still uncomplete: https://wiki.ivoa.net/twiki/bin/view/IVOA/2025ARoadmap - please, complete it!
    • Ideally this should be very shortly after interop, if not during the interop, having been at least partially established during the meeting.
    • What are the practical reasons that we are not getting these updated? Maybe there are better ways to do this?

• (standing item): documents on track
  • RFC
    • VOEvent-2.1 - RFC page
      • implementations & validator: status
      • registry specification: news? path forward?
      • Move to next meeting to know what to do with it
    • StandardsRegExt-1.1 RFC page: nearly there! can we close it?
      • Semantics has responded, so we are ready.
    • MANGO-1.0 RFC page: status?
      • Only one group so far. Would really like to see more reviews. Now is a good time since there are not competing reviews.
  • EN
    • any?
  • Errata
    • foreseen a SimpleDALRegExt one (clarifying references to ConeSearch -1)
  • VEPs
    • any?
    • vocabularies (only if news to report)
      • Calibration levels ( DRAFT)
      • Object types ( DRAFT)
      • Update on vocabs
        • Observation facilities in progress with Paris Obs
        • Expanding reference frames to heliophysics
        • Maybe a VEP for UCDs for HEALPix
      • Marco: Is there a problem of invalid UCDs in SLAP?
        • https://github.com/ivoa-std/SLAP2/pull/1

• IVOA Northern Fall November 2025 Interoperability Meeting
  • Görlitz (Germany) - 14-16 November 2025
    • program: InterOpNov2025 (program preparation: ProgramPrep2025B
    • website: https://indico.ict.inaf.it/event/3325/
    • ADASS XXXV website: https://indico.dzastro.de/event/4/
    • Should have finalized schedule within a month.
      • In addition to call, perhaps reach out to editors, others proactively to try to set the content.
      • It would help people who might register know what to expect
      • Could we ask Markus to send another announcement? Marco will do that directly (though formal interactions with the LOC might go through Exec)
        • The deadline is not strictly enforced.
      • DSP: 1 session
      • DM: Expecting to have a session on ObsCore and extensions. That may be all.
      • Registry: Planning one session. Call not sent yet.
        • Grégory suggested joint topic
      • Semantics: Should need one session. Maybe joint session with Solar System which hasn't yet had responses to requests.
      • TD would like a session and are working on that (to include VOEvent and some other topics)
      • State clearly if you prefer a particular time of day for remote participant.
      • Meeting will be held in CET (Central European Time)
      • CSP: Nothing planned for November. Thinking AI plenary at June interop.
      • DCP/KDD: Gilles: Not a general AI session, but focused on curation and provenance aspects of AI. Stéphane: Big concern to the point of considering forcing registration to access data. Marco: Maybe invite IPDA, PS people to future meetings
  • it starts getting late!
    • call for contributions
    • plan sessions and ask for the needed slots
  • plan to attend? (good registrations' figures so far)

• (long standing topics reminder)
  • astronet.ru (simple reminder bullet)
  • positions still TBF: Radio IG vice-chair role is open
  • new website: report
    • Things slowed down over the summer for some refactoring of the infrastructure. Soon should be just a matter of setting up the DNS and sending traffic there. At that point we'll want you all to take a look and complain or fix things.
  • IGs & TCG/CSP interfacing
    • CSP attending this meeting is a good start

• AOB
  • Maybe invite sharing about issues of cross-group interest?
    • Version transitioning might be a good example, but there are many.

• Date for the next TCG vconf
  • 28/29 October 2025 @ 13:00 UTC - DST warning?
    • 29 October looks good.

TCG meeting dates, as well as other relevant meetings, should always be reported also at the IVOA Events page.