How to implement a star map in augmented reality(Android)?

Question

Android

There is an idea to create a star map in augmented reality for Android. But how can this be implemented?
I see two options:
1) using GPS and some service that can provide information about the stars in a certain place on Earth;
2) analyze the photo and build a graph by stars, and then compare with graphs that represent constellations.
What other ways are there and do you know a service that can give information about the stars, depending on the location?

Answer 1

1) the sky map is not a problem
2) to determine what is available now you need:
- user coordinates
- gaze directions
- time
3) in order to do everything completely cool, you need to learn how to look for the horizon level, then you can already do everything relative to it. That is, you will again have to work with an accelerometer and a compass.
And you can safely forget about the option with the analysis of stars from the camera.

Answer 2

There is such an application: https://play.google.com/store/apps/details?id=com....
It determines the coordinates using GPS, and a star map is built relative to them.
And the accelerometer is already determined by the angle of the phone.

Answer 3

It just seems to me that it will be difficult for the camera to recognize a specific area of ​​\u200b\u200bit quite a dark sky, or does it not work that way?

Answer 4

Possibly Google Sky . I’m not sure that it’s possible to correctly attach to GPS coordinates there, because the Earth rotates, and during a human life, 2 moments are hardly possible when the stars are in an absolutely identical state. I am not an expert in astronomy, because this is just my subjective opinion, which may differ from the truth.