@MickaelRigault Yup! We have some example interactions coded up here: https://github.com/skyportal/skyportal/blob/main/skyportal/handlers/api/instrument.py#L519
too.

This seems close to shapely:
https://shapely.readthedocs.io/en/stable/manual.html
Which is a very powerful tool coupled with pandas inside geopandas (and super fast).

I'll have a closer look.

haha:

https://astropy-regions.readthedocs.io/en/stable/shapely.html

@MickaelRigault Indeed. To me, the important thing is interactions with the healpix stuff.

do you have an example of that too (never used it before)

@MickaelRigault healpy has nice utility functions for extracting indices from shapes: https://healpy.readthedocs.io/en/latest/generated/healpy.query_polygon.html
@lpsinger has nice utility functions too in ligo.skymap: https://git.ligo.org/lscsoft/ligo.skymap/-/tree/main/ligo/skymap/tool
depending on what exactly is needed. He also made an overlap calculator for doing the overlaps in postgres directly: https://github.com/skyportal/healpix-alchemy which has nice examples too.

@mcoughlin
For simplicity, I have move the implementation of the refreshed simsurvey here:
https://github.com/MickaelRigault/skysurvey

I currently call it skysurvey, we can easily merge it with simsurvey if we want to keep the simsurvey "brand".

Moving the discussion above there.

You will see basic implementation started.

Really interesting @MickaelRigault! Personally I think that yes this should become the new simsurvey. Presumably the tag should be a 1.X release to indicate potentially breaking changes once it is ready.

Fine by me