random_disk

simsit.tools.random_disk(center, radius, rng)

Draw an approximately uniform random point within a small spherical cap.

Parameters

centergalsim.CelestialCoord

Cap center.

radiusgalsim.Angle

Cap radius.

rngnumpy.random.Generator

Random number generator.

Returns

galsim.CelestialCoord

Random point near center.

Notes

This uses a small-angle approximation and is most accurate for small radii.