Feature request: Tool for checking object visibility.

[mFulton07]

It would be nice to have on the Lasair object pages, a widget for quickly checking object visibility from an observatory of the user's choice like in these programs: http://catserver.ing.iac.es/staralt/index.php or https://www.arcsecond.io/features.

[RoyWilliams]

This is a nice idea, thanks Michael. We will try to include this in the lasair-LSST, however we are now drawing a line under lasair-ZTF, so will not happen soon.