Displaying Stonyhurst grid labels on a full-disk map

SunPy
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Hello! [First time posting, so please let me know if I’m doing something wrong]

I have a white-light, full-disk images of the Sun taken using smart telescopes or DSLRs that have already been rotated so that their orientations match with contemporaneous SDO/HMI images. Using the tutorials like: Drawing heliographic longitude and latitude lines — sunpy 7.0.2 documentation I am able to overlay the Stonyhurst grid on my maps, but for E/PO (education and public outreach) purposes it would be great if the grid lines could be labeled. I have noticed that in sunpy 7.0.2 documentation > gallery > plotting > grid_plotting.html the grid labels show up, but in that case a small portion of the solar disk is being displayed. Do you have any ‘minimum working example‘ showing how grid labels can be displayed in a full-disk image? Roughly speaking, something along the lines of this image https://cdn.britannica.com/63/2063-050-89E52B49.jpg but just showing the grid labels.

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The only example I can think that has labels like that but isn’t really in the same vein is the first plot of this example: Reprojecting a Helioprojective Map to Helioprojective Radial — sunpy 7.0.2 documentation

This feature comes from the following pull request to astropy: Add a tickable gridline to a WCSAxes plot by ayshih · Pull Request #13829 · astropy/astropy · GitHub which has more examples of what is possible. There is Overlaying coordinate systems — Astropy v7.1.0 which has a small example of how to add inner tick labels.

@ayshih was the one who wrote it and might be able to provide a working example for you.

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Thanks for the pointers @nabobalis ! I’ll try the PR by @ayshih which looks perfect! Meanwhile it might be great if @ayshih could provide a working example. I think this is something quite a few people will find useful, and will appreciate.