[Heig] Fwd: Thematic meeting: ObsCore and extensions
Janet Evans
janet at cfa.harvard.edu
Wed Feb 5 20:58:11 CET 2025
Hi Folks,
I seeded the meeting page today for our meeting on Obscore.
You’ll find a link on the HEIG page (https://wiki.ivoa.net/twiki/bin/view/IVOA/HEGroup) under Meeting -or- you can go to the link directly.
https://wiki.ivoa.net/twiki/bin/view/IVOA/HEIG_25Feb11
As Bruno said, the plan is for a thematic meeting on Obscore. Please review the input Ian provided from his Xray experience and think about your waveband. Do we have it covered or is there more to add??
If you have *notes or a table* to discuss at the meeting, you can attach the file to the meeting page and add a link -or- send it to me and I’ll do it for you.
Looking forward to a productive meeting — Tuesday, February 11 @14:00 UTC.
Thank you,
- janet & bruno
> Begin forwarded message:
>
> From: Bruno Khelifi via heig <heig at ivoa.net>
> Subject: Re: [Heig] Thematic meeting: ObsCore and extensions
> Date: February 5, 2025 at 3:47:42 AM EST
> To: heig at ivoa.net
> Reply-To: Bruno Khelifi <khelifi at apc.in2p3.fr>
>
> Dear all,
>
> Thank you for having quickly filled the pool!
>
> So, the best result is: Tuesday 11th at 14h UTC.
>
> The zoom connection details are:
>
> https://u-paris.zoom.us/j/82342148557?pwd=aKOAn3kg21uHAHkD3Dbe3g0qZsLoG5.1 <https://www.google.com/url?q=https://u-paris.zoom.us/j/82342148557?pwd%3DaKOAn3kg21uHAHkD3Dbe3g0qZsLoG5.1&source=gmail-imap&ust=1739350072000000&usg=AOvVaw222MckkkVXYQnQeJeHbfn6>
>
> ID de réunion: 823 4214 8557
> Code secret: 476849
>
>
> We will soon create a Wiki page in order to deposit your material if you wish to make a contribution.
>
> The best,
> Bruno and Janet
>
>
>
> Le 03/02/2025 à 09:51, Bruno Khelifi a écrit :
>> Dear all,
>>
>> It seems that the proposed time slots are not ideal for all. We
>> will try to find a good one, leaving a bit more time to work on
>> the proposal;)
>>
>>
>>
>> I have extended the pool with the 10th, 11th, 12th and 13th of
>> February: https://strawpoll.com/e6Z2AWvY6gN <https://www.google.com/url?q=https://strawpoll.com/e6Z2AWvY6gN&source=gmail-imap&ust=1739350072000000&usg=AOvVaw3I23sEVPg1G_GAfiCahRpd>
>> The best,
>>
>> Bruno and Janet
>>
>>
>>
>>
>>
>>
>> Le 29/01/2025 à 10:02, Bruno Khelifi via heig a écrit :
>>> Dear all,
>>>
>>> As discussed during our last meeting, a dedicated discussion is
>>> necessary to provide to the DM WG (and maybe the TCG) a "HEIG
>>> feedback" on the ObsCore extension proposal of Patrick Dowler
>>> (see the attached email).
>>>
>>> The purpose of the meeting is to answer to the following
>>> questions:
>>>
>>> - Should we approve the scheme of extension of ObsCore for the
>>> radio or the one of insertion of elements into the core ObsCore
>>> DM, in the perspective of our future proposal?
>>>
>>> - Are the proposed elements in line with our possible future
>>> proposal?
>>>
>>> - AoB
>>>
>>> Discussions have been started by email (see exchanges of
>>> François and Ian). We propose to conclude these exchanges with a
>>> remote meeting. Here is a pool to choose the best time slot for
>>> the experts:
>>>
>>>
>>>
>>> https://strawpoll.com/e6Z2AWvY6gN <https://www.google.com/url?q=https://strawpoll.com/e6Z2AWvY6gN&source=gmail-imap&ust=1739350072000000&usg=AOvVaw3I23sEVPg1G_GAfiCahRpd>
>>> I do imagine that Ian, Mathieu and François may desire to
>>> present their thoughts. Any contributions are welcome!
>>>
>>> The best,
>>>
>>> Bruno
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Le 06/01/2025 à 21:08, Janet Evans via heig a écrit :
>>>>
>>>> See below … a discussion about Obscore on the DM list. We can discuss next mtg if HE folks interested in this topic are also on the DM list and then I won’t forward. Since we’re a new IG … thought it may help. We’ll definitely get Obscore as a topic of our next mtg.
>>>>
>>>> -janet
>>>>
>>>>> Begin forwarded message:
>>>>>
>>>>> From: Patrick Dowler via dm <dm at ivoa.net> <mailto:dm at ivoa.net>
>>>>> Subject: ObsCore and extensions
>>>>> Date: January 6, 2025 at 3:02:23 PM EST
>>>>> To: Data Models mailing list <dm at ivoa.net> <mailto:dm at ivoa.net>
>>>>> Cc: François Bonnarel <francois.bonnarel at astro.unistra.fr> <mailto:francois.bonnarel at astro.unistra.fr>
>>>>> Reply-To: Patrick Dowler <pdowler.cadc at gmail.com> <mailto:pdowler.cadc at gmail.com>
>>>>>
>>>>> At the last interOp and while comparing the radio extension to
>>>>> CAOM-2.4 and some new features in WD-CAOM-2.5, it became increasingly
>>>>> clear that some of the proposed fields for the radio extension are
>>>>> more generally applicable and in my opinion should be promoted to
>>>>> "core". I kind of volunteered to write down the details of that, so
>>>>> here it is that proposal:
>>>>>
>>>>> ** core **
>>>>> s_resolution_min
>>>>> s_resolution_max
>>>>> s_fov_min
>>>>> s_fov_max: I still feel the existing s_fov is already the same as
>>>>> s_fov_max and not a representative value; it is nominally the size of
>>>>> the s_region
>>>>> t_exp_min
>>>>> t_exp_max
>>>>> t_exp_mean: In CAOM exposure is already the mean exposure time per
>>>>> pixel and I feel strongly that the existing ObsCore.t_exptime is
>>>>> already the same thing (well, it suggests "median exposure time per
>>>>> pixel" which I think I may have contributed, but median breaks down in
>>>>> some common nearly degenerate cases and is less useful than mean; we
>>>>> may need to clarify the definition in ObsCore
>>>>> f_resolution: absolute spectral resolution is useful, but this should
>>>>> be named em_resolution
>>>>>
>>>>> ** radio extension **
>>>>> s_maxiumum_angular_scale - I have been convinced by radio people that
>>>>> maximum_recoverable_scale is more explicit and a better term for this
>>>>> uv_distance_min
>>>>> uv_distance_max
>>>>> uv_distribution_ecc
>>>>> uv_distribution_fill
>>>>>
>>>>> Questions:
>>>>> 1. How does this impact the time extension?
>>>>> 2. How does this impact the high energy extension?
>>>>>
>>>>> Work:
>>>>> 1. ObsCore needs to be ported to ivoatex (from docx?) and included in ivoa-std
>>>>> 2. I can set aside time necessary to write the the changes for WD-ObsCore-1.2
>>>>>
>>>>>
>>>>> --
>>>>> Patrick Dowler
>>>>> Canadian Astronomy Data Centre
>>>>> Victoria, BC, Canada
>>>>
>>>>
>>> --
>>>
>>> Bruno Khelifi
>>> Physicist at CNRS (laboratory APC, Paris)
>>> Phone: +33.1.57.27.61.58 - Fax: +33.1.57.27.60.71
>>> APC, IN2P3/CNRS - Universite de Paris Cite
>>>
>>>
>> --
>>
>> Bruno Khelifi
>> Physicist at CNRS (laboratory APC, Paris)
>> Phone: +33.1.57.27.61.58 - Fax: +33.1.57.27.60.71
>> APC, IN2P3/CNRS - Universite de Paris Cite
> --
>
> Bruno Khelifi
> Physicist at CNRS (laboratory APC, Paris)
> Phone: +33.1.57.27.61.58 - Fax: +33.1.57.27.60.71
> APC, IN2P3/CNRS - Universite de Paris Cite
--
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