All-sky accessible FoV

[HealthyPear]

Is your feature request related to a problem? Please describe.

What I mean is a shaded area showing at a glance what is the portion of sky available (in RA/DEC) at a certain time (and/or integrated over time) from a location given some constraints, like zenith angle or moon angular separation or illumination.

I guess one can compute it externally and then add it on top of the map, but I think it would be cool
if starplot could provide a method for this through MapPlot.

Describe the solution you'd like

Basically something like MapPlot.accesible_fov(location, time_range, constraints).

Describe alternatives you've considered

Right now I am mixing matplotlib, and astroplan (which depends on astropy), but of course having this directly from starplot would be much better as a self-contained solution.

Additional context

The constraints part might be a separate feature.

[steveberardi]

Are you thinking something like this (A):

---

OR something more like this (B):

---

Or maybe both? :)

Plot A is already supported in Starplot (by calling horizon on the map plot), but Plot B is not (unless you manually define that polygon yourself, I just drew it in photoshop here). I think that would be great to support though. What kind of constraints would you be interested in (other than the ones you listed)?

[HealthyPear]

I am talking about something like this (best on a mollweide proj)

here you can also see the color code based on zenith range, but one could also color code the map based on fraction of observable time (given contraints)

[HealthyPear]

What kind of constraints would you be interested in (other than the ones you listed)?

I do not use them all in my own research field, but given the intended audience for starplot, I guess all of the *Constraint classes that you can find here might be relevant.