Easy enough, since this is how celestial navigation works, especially as we have very accurate clocks. You can get latitude from image declination and longitude

Easy enough, since this is how celestial navigation works, especially as we have very accurate clocks. You can get latitude from image declination and longitude from time, provided your clock is set from a good reference. In theory you only need one image pointed straight up to estimate declination. You’ll probably have an uncertainty on the order of miles.