__all__ = ["c", "minus_two_pi_over_c", "two_pi_over_c"]

import math

# Lightspeed
c = 2.99792458e8

two_pi_over_c = 2 * math.pi / c
minus_two_pi_over_c = -two_pi_over_c

DEG2RAD = math.pi / 180.0
ARCSEC2RAD = math.pi / (180 * 3600)
