def ws_subscribe(self, wsrequest):
        channel = wsrequest.required_param('channel')
        event = wsrequest.required_param('event')
        check_ws_permission(wsrequest, channel, 'read')
        ws = wsrequest.ws
        channels = ws.channels
        return channels.register(channel, event, ws.write_message)
Compute distance and position angle solving a spherical
dataset/ETHPy150Open quantmind/lux/lux/extensions/sockjs/channels.py/Channels.ws_subscribe--crossover with--dataset/ETHPy150Open ejeschke/ginga/ginga/util/wcs.py/dispos