Starry sky photos must be edited on pic editors after taking, but first you should take some qualified pictures. The selection of location: you need to find a place away from the urban area and avoid light pollution. Find a suitable foreground, you’d better photograph from a low angle slightly so as to avoid strong light pollution near the horizon and photograph the obvious stars in the sky.
Step 1: The superposition method of the orbit of the stars under Crescent Moon:
The selection of time: you should avoid the sunlight, and start to photograph almost two hours after sunset and two hours before sunrise. You should also avoid moonlight, the orbit of the stars will be very sparse with irradiation of moonlight, but ground scenery will be illuminated and unique. The method of traditional single long exposure basically has no way in face of the sky of moonlight, it can only have a few minutes of exposure, the superposition method is not limited by exposure time, it can photograph for a long time and present different views.
The ground scenery is illuminated by moonlight: If the weather condition is better, the light pollution is light, and the exposure is easier to control, the ground can be also lighter, we can get the effect almost the same as daytime theoretically.