I understand now. You need a pointing program.
Ideally, it should be an independent program, run after orbit determination and using OD output. with a separate program, you could use any other reference orbit for pointing.
You can however modify the tutorial for this purpose, if you always want to do both OD on past measurements and pointing for next pass in row.
I would suggest the following:
Around line 453 of the tutorial, you should change the line:
final Orbit estimated = estimator.estimate()[0].getInitialState().getOrbit();
into
final Propagator estimatedPropagator = estimator.estimate()[0];
final ORbit estimated = estimatedPropagator.getInitialState().getOrbit();
final Generator generator = new Generator();
final ObservableSatellite obsSat = generator.addPropagator(estimatedPropagator);
final GroundStation cahaStation = stations.get("CAHA").getStation();
final AngularRaDecBuilder raDecBuilder = new AngularRaDecBuilder(null,
cahaStation,
FramesFactory.getEME2000(),
new double[] { 0.0, 0.0 },
new double[] { 1.0, 1.0 },
obsSat);
final EventDetector above5Degrees = new ElevationDetector(cahaStation.getBaseFrame()).
withConstantElevation(FastMath.toRadians(5.0));
generator.addScheduler(new EventBasedScheduler<>(raDecBuilder,
new FixedStepSelector(10.0,
TimeScalesFactory.getUTC()),
estimatedPropagator,
above5Degrees,
SignSemantic.FEASIBLE_MEASUREMENT_WHEN_POSITIVE));
SortedSet<ObservedMeasurement<?>> generated = generator.generate(myStartDate, myEndDate);
and then you should print the generatoed measurements in some file suitable for your telescope pointing program.
Here, I have arbitrarily used 10 seconds (aligned with UTC) for each generated measurement, and only when the satellite is 5 degrees above horizon as seen from the telescope site. You will need to adjust this to your needs.
Hope this helps