OpticPlot with Camera failing for wide angle focal lengths

[pbljung]

Beautiful tutorial plots!

Describe the bug
I modified tutorial_05 to use
Camera(lens_focal_length=50, sensor_width=36, sensor_height=24)
instead of Binoculars().

However this fails complaining
ValueError: Field of View too big: 39.597752709049864 (max = 9.0)

However it does work if I use lens_focal_length > 300 but I want to use a wide angle lens.

To Reproduce
`from datetime import datetime
from zoneinfo import ZoneInfo

from starplot import OpticPlot, Observer, DSO, _
from starplot.models import Binoculars, Camera
from starplot.styles import PlotStyle, extensions

tz = ZoneInfo("US/Pacific")
dt = datetime(2024, 4, 8, 21, 0, 0, tzinfo=tz)

observer = Observer(
dt=dt,
lat=33.363484, # Palomar Mountain
lon=-116.836394,
)

style = PlotStyle().extend(
extensions.GRAYSCALE_DARK,
extensions.OPTIC,
)

m45 = DSO.get(m="45") # lookup The Pleiades (M45)

binoculars = Binoculars( magnification=15, fov=65,)

camera = Camera(
#lens_focal_length=300, # OK
lens_focal_length=50, # FAILS
sensor_width=36, # in mm
sensor_height=24, # in mm
)

p = OpticPlot(
observer=observer,
# target location via the DSO model instance
ra=m45.ra,
dec=m45.dec,
#optic=binoculars, # OK
optic=camera, # FAILS
style=style,
resolution=2048,
#autoscale=True,
)
p.stars(where=[_.magnitude < 12])

p.export("optic1.png", padding=0.1, transparent=True)
`

Expected behavior
A plot should be generated similar to the tutorial_05.png

Screenshots
NA

Environment Details (please complete the following information):

• Starplot version 0.17.1
• Python version Python 3.10.11
• Matplotlib version 3.10.7
• OS: [e.g. macOS, Ubuntu, Windows, etc] macOS 15.7.2

Additional context
NA

[steveberardi]

Yeah, I really need to revisit that 9 degree FOV limit on optic plots. I naively chose that value to avoid distortion in optic plots, but it could probably be increased. I'll put this on the roadmap to investigate more.

In the meantime, there's an optic_fov function (available on all plot types) that you may find useful. It'll plot the FOV of an optic, and does NOT have a FOV limit like optic plots do.