ha_rise_set

Astronomy.ha_rise_set(el_limit, lat, dec)

Hour angle from transit for rising and setting.

Returns pi for a source that never sets and 0 for a source always below the horizon.

:param el_limit : the elevation limit in radians :type el_limit : float

:param lat : the observatory latitude in radians :type lat : float

:param dec : the source declination in radians :type dec : float

Returns

hour angle from transit in radians