Notify user if cone search is outside ZTF coverage

[JohnAstronomer]

If you enter a position is outside the ZTF coverage in the cone search the result shows 0 objects found in the cone , while this is true it is not very helpful. It would be better if is said outside ZTF or in the future VRO coverage area.

[RoyWilliams]

We don't have coverage information, all we have is a stream of alerts, each with a position.

[JohnAstronomer]

Hello Roy, Looking at the DR4 release images it looks as though the survey stops at -28 degrees so that could be used as a check on user input. The same will happen with VRO in due course but in that case the limit will be some Northern declination as the telescope is in the Southern Hemisphere. Regards John

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On Fri, 2021-01-29 at 01:00 -0800, Roy Williams wrote: We don't have coverage information, all we have is a stream of alerts, each with a position. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe. [ { ***@***.***": "http://schema.org", ***@***.***": "EmailMessage", "potentialAction": { ***@***.***": "ViewAction", "target": " #225 (comment)", "url": " #225 (comment)", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { ***@***.***": "Organization", "name": "GitHub", "url": "https://github.com" } } ]