$sat_alb_file = "ar2017031800_goes15_20170318_0030.satalb";
$sat_alb_bird = "goes13 goes15";
$sat_alb_date = "goes13:20170318_0015 goes15:20170318_0030";
$sat_alb_chan = "vis";
$sat_alb_data = "ar2017031800_goes13_20170318_0015.satalb ar2017031800_goes15_20170318_0030.satalb";