Duplicate Longitude and Latitude from Pixel Transform

[andrew-ayala]

Describe the bug
The latitude and longitude arrays produced by the "get_pixel_transforms" function include duplicate values of at (0 Lat, 180 Lon) and superfluous (0 Lat, -180 Lon).

To Reproduce

map = starry.Map(ydeg=2)
map[1,0] = 1.0
map.show()

lat, lon, Y2P, P2Y, Dx, Dy = map.get_pixel_transforms(oversample=2)
print(lat)
print(lon)

Output:

Lats = [-90. 0. 0. 0. 0. 0. 0. 0. 0. 90.]
Lons = [ 0. -180. -108. -36. 0. 36. 108. 180. 180. 0.]

Expected behavior
I believe latitude and longitude of the sampled points should be unique and evenly sampled across the sphere's surface.

Your setup (please complete the following information):

• Version of starry: 1.2.0
• Operating system: MacOS 13.3.1 (a)
• Python version & installation method (pip, conda, etc.):

Additional context