Simple Moon tracker for hamlib rotator control (rotctld)

moontrack.py

import re
import time
import ephem
import telnetlib

# put your rotctld address and port here
rot_addr = "192.168.1.124"
rot_port = "4533"

home_lat = "54.687157"
home_lon = "25.279652"

moon = ephem.Moon()
rotctld = telnetlib.Telnet(rot_addr, port=rot_port, timeout=20)

while True:
    homeloc = ephem.Observer()
    # your home coordinates
    homeloc.lat = home_lat 
    homeloc.lon = home_lon
    moon.compute(homeloc)

    altitude = int(re.split(":", str(moon.alt))[0])
    azimuth = int(re.split(":", str(moon.az))[0])

    if altitude > 0:
        print("Rotating to {}, elevation {}".format(azimuth, altitude))
        rotctld.write(
            b"P "
            + bytes(str(azimuth), "utf-8")
            + b" "
            + bytes(str(altitude), "utf-8")
            + b"\n"
        )
    time.sleep(1)
    rotctld.write(b"p\n")
    ret = rotctld.read_eager()
    time.sleep(1)
    print(ret)