from starplot import MapPlot, Miller, _

from starplot.styles import PlotStyle, extensions

style = PlotStyle().extend(

extensions.BLUE_NIGHT,

extensions.MAP,

)

p = MapPlot(

projection=Miller(),

ra_min=15 * 15,

ra_max=20 * 15,

dec_min=-45.2,

dec_max=-3,

style=style,

resolution=3600,

scale=0.9,

)

p.constellations()

p.constellation_borders()

p.stars(

# select the brightest stars:

where=[_.magnitude <= 3],

# here we make the stars bigger by passing in a custom size function (i.e. a callable)

# you'll learn more about this later in the tutorial...

size_fn=lambda star: (20 - star.magnitude) * 4,

# use an 8-pointed star for bright star markers:

style__marker__symbol="star_4",

style__label__offset_x=8,

style__label__offset_y=-8,

style__label__stroke_width=2,

)

p.stars(

where=[

_.magnitude > 3, # select the dimmer stars

_.magnitude < 8,

],

bayer_labels=True,

)

p.nebula(

# select nebulae which have no defined magnitude or less than 7

where=[_.magnitude.isnull() | (_.magnitude < 7)],

where_true_size=[_.size > 1], # only plot large nebula as their true size

)

p.open_clusters(

where=[_.magnitude.isnull() | (_.magnitude < 7)],

where_true_size=[False],

)

p.globular_clusters(

where=[_.magnitude.isnull() | (_.magnitude < 7)],

where_true_size=[False],

)

p.ecliptic()

p.milky_way()

p.constellation_labels()

p.export("tutorial_06.svg")