Astro3

from ephem import readtle
from picamera import PiCamera
from time import sleep

class MyStruct():
    def __init__(self, field1, field2, field3):
        self.field1 = field1
        self.field2 = field2
        self.field3 = field3

name = "ISS (ZARYA)"
line1 = "1 25544U 98067A   18356.58700427  .00000680  00000-0  17564-4 0  9997"
line2 = "2 25544  51.6379 159.8223 0004659 171.1463 304.0053 15.54085692147811"

camera = PiCamera()
camera.resolution = (2592, 1944)  # max resolution

for i in range(3*60):
    camera.capture('image{:3d}'.format())  # take a picture every minute for 3 hours
    sleep(60)

iss = readtle(name, line1, line2)
iss.compute()
print(iss.sublat, iss.sublong)