from datetime import datetime

from zoneinfo import ZoneInfo

from starplot import ZenithPlot, Observer, _

from starplot.styles import PlotStyle, extensions

tz = ZoneInfo("America/Los_Angeles")

dt = datetime(2023, 7, 13, 22, 0, tzinfo=tz)

observer = Observer(

dt=dt,

lat=33.363484,

lon=-116.836394,

)

p = ZenithPlot(

observer=observer,

style=PlotStyle().extend( # add a style to the plot

extensions.BLUE_MEDIUM,

extensions.FIGURE_TRANSPARENT, # make the figure background transparent

),

resolution=4000,

)

# Again, we plot the constellations first, because Starplot will use the constellation

# lines to determine where to place labels for stars (labels will look better if they're

# not crossing a constellation line)

p.constellations()

p.stars(where=[_.magnitude < 4.6], where_labels=[_.magnitude < 3])

# plot galaxies and open clusters with a limiting magnitude of 9

# but do NOT plot their labels or their true apparent size

p.galaxies(

where=[_.magnitude < 9],

where_labels=False,

where_true_size=False,

)

p.open_clusters(

where=[(_.magnitude < 9) | (_.magnitude.isnull())],

where_labels=False,

where_true_size=False,

)

# plot constellation borders and the ecliptic

p.constellation_borders()

p.ecliptic()

# plot the Milky Way

p.milky_way()

# plot a marker for the Coma Star Cluster (aka Melotte 111) and customize its style.

# Starplot also has functions for plotting circles, rectangles, polygons, and more.

# See the reference for ZenithPlot for details.

p.marker(

ra=12.36 * 15,

dec=25.85,

style={

"marker": {

"size": 80,

"symbol": "circle",

"fill": "#ed7eed",

"stroke": "#e0c1e0",

"opacity": 0.8,

},

"label": {

"font_size": 25,

"font_weight": 600,

"fill": "#c83cc8",

"opacity": 1,

},

},

label="Mel 111",

)

p.horizon()

p.constellation_labels() # Plot the constellation labels last for best placement

p.export("tutorial_03.svg")