SCS2

[Markus Demleitner]

Dear DAL, dear Registry,

On Wed, Sep 17, 2025 at 12:36:52PM +0200, Markus Demleitner wrote:
> I have procrastinated my College Park homework for a bit too long
> already, but now I just have to carve out some time for it: Cone
> Search 2.
>
[...]
>
> I have just pushed a first commit drafting out the protocol itself,
> remaining as close to SCS1 (in concept) as possible (but not actually
> re-using significant amounts of texts):
> <https://github.com/msdemlei/scs2>.
>
> I am planning to write, over the next few weeks, sections on:
>
> * Registry aspects (stressing the importance of tablesets, also
>   mentioning the possibility of having auxiliary SCS capabilities)
> * Appendix A: Non-normative recommendations for clients
> * Appendix B: A transition plan

I've actually put in drafts for these now.  If you have an interest
in the Registry aspects or the transition plan (that in particular;
spoiler: the optimistic scenario is for shutting down ConeSearch-1 in
the summer of 2031), I'd encourage you to have a look now.  If there
are rather fundamental concerns, I'd do another round of edits in my
private repo.  Otherwise, I'd ask Pat to move it to ivoa-std next
week and we'd switch to edits via PRs.

Thanks,

         Markus