Optionally show/draw only visible hemisphere

[Trost Looser]

Hello to the community,

A few of you may remember a cool planetarium software from the 90s called Power Age Sky Simulator. What I liked about this software is that it could draw the Azimuthal Grid of the visible hemisphere only (see attached pic).
Would it be possible to implement an option like that into Stellarium?
If I select the presentation in Stellarium to be Ortographic and enabe azimuthal and equatorial grid along with the horizon line and start the animation one can very well see the motion of celestial bodies in the observers aspect of the celestial sphere. To enhance the effect, it would be great if optionally only the azimuthal grid visible to the observer could be drawn. An additional option could be only showing the visible hemisphere of the Celestial Sphere itself. (The invisible part of the celestial sphere could also be overlayed with a very dark and only slightly transparent shadow to indicate this).
With both options enabled, the resulting view would be the observer's visible "sky dome" (hemisphere).

Thanks for your efforts and feedback in advance!
Regards
Trost

[Khalid AlAjaji (kajaji)]

You can achieve part of what you want by using the circumpolar option to get lines drawn for the "Always above horizon" and "Always below horizon" for your location.

View window -> Markings -> circumpolar circles

[gzotti (georg-zotti)]

No, the circumpolar circles do not help here. But you can make a copy of the existing Zero Horizon landscape and set its color to black. Then all things below horizon are black.
For a semitransparent ("very dark") horizon, make a "spherical" landscape with a semitransparent texture (like 4x4 pixels, black, 20% transparent), and set maptex_top=0. This will however also show azimuth grid lines below horizon.

[gzotti (georg-zotti)]

Advice given, set to "Won't fix". This is Stellarium, not Power Age Sky Simulator.