plt.py

import json

from starplot import MapPlot, Miller, _
from starplot.styles import PlotStyle, extensions, LineStyleEnum
from starplot.models import Camera

optic = Camera(sensor_width=36, sensor_height=24, lens_focal_length=2939, rotation=0)

style = PlotStyle().extend(
    extensions.BLUE_DARK,
    extensions.MAP,
)

polygonstyle = {
	"alpha": 1.0,
	"edge_color": "#ffff00",
	"line_style": LineStyleEnum.SOLID,
}

def plot_observations(observations):
	p = MapPlot(
		projection=Miller(),
		ra_min=0,
		ra_max=360,
		dec_min=-80,
		dec_max=80,
		style=style,
		resolution=6000,
		# since this map has a very large extent, let's scale everything down
		scale=0.8,
	)
	p.gridlines()
	p.constellations()
	p.stars(where=[_.magnitude < 6], where_labels=[_.magnitude < 2.1])

	p.constellation_labels(style__font_size=28)
	p.milky_way()
	p.ecliptic()
	p.celestial_equator()

	for observation in observations:
		p.optic_fov(ra=observation[0], dec=observation[1], optic=optic, style=polygonstyle)

	p.export("map_big.png", padding=0.5)

if __name__ == "__main__":
	with open("observations.json") as f:
		observations = json.loads(f.read())
	plot_observations(observations)