ObsCore - plans for calib_level in next revision

Mireille Louys mireille.louys at unistra.fr
Thu Jun 12 15:38:57 CEST 2025


Hi Mark ,

I think the plan is to enhance the use of vocabularies in ObsCore 1.2 , 
for data product type and calibration_level , and find a match of the 
integer values in Obscore 1.1

with the proposal in 
https://www.ivoa.net/rdf/processing-level/2024-11-12/processing-level.html

This vocabulary is preliminary and not yet endorsed by semantics and TCG 
but it should be rather easy.

May be we should study how to make it smooth from one version to the 
next , by a cross-walk table in the standard document for instance.

Mireille

Le 11/06/2025 à 23:54, CresitelloDittmar, Mark a écrit :
> Pat/Mireille,
>
> I have a quick question for you on the plans for ObsCore v1.2 with 
> respect to the vocabularies.
>
> Pat: In the ObsCore session at the interop, you mentioned an intention 
> to migrate the dataproduct_type element to the vocabulary.
>
> What about others?  Specifically, I'm curious about your plan for 
> calib_level.
>   * currently, it is described as an enum integer with values 0 -> 4
>
> MANGO is set to use a vocabulary for this same concept, and is 
> expecting to be consistent with ObsCore values. 
> https://www.ivoa.net/rdf/processing-level/2024-11-12/processing-level.html
>
> This also comes up in the HE extension note, and is based on the 
> assumption of moving to the vocabulary (pretty sure).
>
> Just to be clear, I'm not concerned at this point about the vocabulary 
> content, just in what the plan is with ObsCore w.r.t. migrating in 
> that direction, and reconciling the integer -> string change.
>
> Mark
>
>
>
-- 
--
Mireille Louys, MCF (Assistant Professor)
Centre de données Astronomiques (CDS)       Equipe Images, ICube
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