Currently, the Javascript API docs give an example of creating a polygon footprint. E.g:

{event: 'overlayFootprints', content:{'overlaySet': {'type': 'FootprintListOverlay', 'overlayName': 'test footprints', 'cooframe': 'J2000', 'color': 'red', 'lineWidth': 5, 'skyObjectList': [{'name': 'test footprint1', 'id': 1, 'stcs': 'Polygon J2000 187.33912535049 -62.6616054228651 187.343512531474 -62.7116786437002 187.235239903703 -62.7136263115712 187.231036216914 -62.6635488923945', 'ra_deg': '187.287228500645', 'dec_deg': '-62.6876148176328'}]}}}

Is it possible to create a circle (other than by defining it as a polygon)? 

Are there any more docs for the stcs parameter?

Is the ESASky source code available somewhere?

Thanks.

I have noted that some targets are observed with large proper motion from Gaia DR3. But I am not clear what's the direction of the proper motion. I notice that some are marked with arrows and some are not. So how can I know the direction of the proper motion for those targets.

I have noticed poor alignment between the Gaia Focus Product Release catalogue of Omega Cen and the HST Outreach image in the same region. Can this be fixed?

Today I can't seem to get the "Publications" result to yield anything. Its hung up in an endless loading cycle. I've cleared cookies, caches, switched browsers. There also appear to be some strange shadows and tinting that look to be being caused by externals on a satellite.

GALJ2000GALJG223.5904988 -08.6562613FoV: 9.6° X 4.8°DSS2 color ; is one such example.

If just browsing the sky, I have found some interesting looking objects but cannot see an easy way to identify them within EsaSky

Hello, trying to share some closeups of the new JWST image, and the URL does not work.  For example 

https://sky.esa.int/esasky/?target=83.78707943000983%20-5.410806620155577&hips=2MASS+color+JHK&fov=0.002343707326783105&cooframe=J2000&sci=false&lang=en&jwst_image=webb_orionnebula_shortwave

should return

but instead it returns

I have not yet found the display function in ESA Sky which allows us to display known and imaged Quasars, AGN and Candidates.

From the 1.5 Million or so in our database to date. Viz the Million Quasars (Milliquas) catalog, v7.10, 15 April 2023

https://quasars.org/milliquas.htm

How do we toggle/display all known, imaged, Quasars for viewing and exploring in ESA Sky?

Or Open Clusters, Globular Clusters, Dwarf Galaxies, Galaxies, etc.?

Thank you. I was not able to get any assistance from the SDSS for viewing the imaged Quasars in the Catalog

Millennium Twain

member of the ESA Gaia Research Community

Hi,

I use ESASky to prepare my observations in telescopes, and it would be really good to have the option to search for more than one object, for instance to measure the angular distance between both of them.

Thanks,

Nuria

Hi,

it would be great if you could add optional paramters to the URL that allow to define sky regions around the central position. This would allow to load ESASky centered on a position (e.g. the best fit location of a new, possibly transient, source) AND show the uncertainty of this best fit position. This is exremely helpful to find possible MWL counterparts to the new source.

In Aladin Lite this feature is available via the use of overlays directly in the URL. An example (defining a circular region of radius 1.5deg): 

https://aladin.cds.unistra.fr/AladinLite/?overlays=[{ "type": "graphic", "name": "uncertainty", "color": "darkgrey", "lineWidth": 4, "items": [ { "type": "circle", "ra": 288.4037, "dec": 0.3537, "radius": 1.5 } ]}]&target=19 13 36.89+0 21 13.32&fov=63.4675

Thanks a lot for your great work on ESASky!

Fabian (on behalf of the Astro-COLIBRI team)

The format of Gaia DR3 columns has changed recently as shown in the attached screenshot so that, for example, "Proper Motion in RA" is shown in the HH MM SS format usual for RA proper. This doesn't make much sense and I don't think it's me. The same applies to "Proper Motion in Dec" and both their errors.

Screenshot 2023-05-02 at 16.10.25.png