def make_excluded_sources():
# centers = SkyCoord([84, 82], [23, 21], unit='deg')
centers = SkyCoord([83.63, 83.63], [22.01, 22.01],
unit='deg',
frame='icrs')
radius = Angle('0.3 deg')
sources = SkyCircleRegion(pos=centers, radius=radius)
catalog = Table()
catalog["RA"] = sources.pos.data.lon
catalog["DEC"] = sources.pos.data.lat
catalog["Radius"] = sources.radius
return catalog
from astropy.wcs import WCS
from gammapy.region import find_reflected_regions, SkyCircleRegion
from gammapy.image import ExclusionMask
from gammapy.utils.testing import requires_data
mask = ExclusionMask.empty(name='Exclusion Mask',
nxpix=801,
nypix=701,
binsz=0.01,
coordsys='CEL',
xref=83.2,
yref=22.7)
mask.fill_random_circles(n=8, min_rad=30, max_rad=80)
pos = SkyCoord(80.2, 23.5, unit='deg', frame='icrs')
radius = Angle(0.4, 'deg')
test_region = SkyCircleRegion(pos=pos, radius=radius)
center = SkyCoord(82.8, 22.5, unit='deg', frame='icrs')
regions = find_reflected_regions(test_region, center, mask)
import matplotlib.pyplot as plt
fig = plt.figure(figsize=(8, 5), dpi=80)
ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], projection=mask.wcs)
mask.plot(ax, fig)
for reg in regions:
reg.plot(ax, facecolor='red')
test_region.plot(ax, facecolor='blue')
plt.show()
