What are the methods of shooting the orbit of a star with time-lapse photography?

Bright stars always remind people of such beautiful scenery. How to record with a camera? Then, let me introduce you to the method of time-lapse photography, hoping to help you.

Method of shooting the orbit of stars with time-lapse photography

1, site selection: find a place far away from the urban area to avoid light pollution. Find a suitable foreground, it is best to shoot a little backwards, so as to avoid the strong light pollution near the horizon and shoot the stars with obvious zenith.

2, time selection: avoid the sun, almost two hours after sunset, two hours before sunrise. Avoid the moonlight, too Lunar calendar 15 can't be filmed in those days when it is close to the full moon. You can shoot almost all night in those days near the lunar calendar 1. At other times, you can check the specific rising and falling time of the moon online to avoid the moon. Under the irradiation of moonlight, the moon stars will be sparse and the orbit will be sparse, but the ground scenery will be illuminated, which is very unique. The traditional single long exposure method can't face the moonlight sky, and it can only be exposed for a few minutes at most, while the superposition method is not limited by the exposure time, so it can shoot for a long time and show different scenery.

3. Weather choice: Wan Li must be very transparent, and Wan Li is cloudless. Pay attention to the fact that the weather in the suburbs is very cold at night, and take cold-proof measures.

4, equipment selection: it is best to be super wide-angle, the aperture is best to be larger, and the high sense of the machine should not be too bad. Cable release is also very important for setting interval shooting. Preferably wired. If you have a remote control, you should also use a wired connection. Because of long exposure, it is easy to interrupt the signal with the remote control.

Skills of shooting the orbit of stars with time-lapse photography

A. Focus: It is not easy to get the accurate focus of the starry sky in the dark night sky. The simple method of manually screwing to infinity may not work. The central focus of the mid-to high-end fuselage is relatively strong, and autofocus can be completed for the brightest stars such as Venus and Sirius. I tried this with D7000 and D700, and it worked. Once in focus, remember the position on the focus scale, and you can manually screw it here next time. If the low-end fuselage can't focus on the stars, focus on the moon when there is one, and then remember the position. Or focus on the distant light, and then take a picture of the starry sky to see if the focus is accurate. If it really doesn't work, you can only manually screw it to infinity, and then move back a little, and then the shooting will correct the focus.

B. Photometry and composition: First, a shot can be exposed for a short time with the maximum aperture and the highest sensitivity (10 second), and the required exposure amount is determined according to the playback histogram, and then the actual required exposure parameters are calculated according to the reciprocal rate. In this way, you can also try to compose a composition in the dark. It is also suitable for single long exposure method and superposition method.

C. Dew: Dew is easy to form on wet nights. Removing ultraviolet rays and installing a hood can effectively prevent lens condensation. Different lenses have different degrees of difficulty in condensation, so you can choose them appropriately. If the weather is wet, pay attention to regularly check the lens for dew. If it is too wet, don't shoot it, so as not to damage the camera and lens.

Tips for shooting the orbit of stars with time-lapse photography

1. There are more stars in the clear night sky.

2. Use tripod and cable to release, because it takes at least 20 minutes of exposure time, the hand pressure will shake and the duration will be short. The SLR battery must be fully charged.

3. Aim at the starry sky, and the aperture can be larger, such as F2-F4; It is best to put some scenery under the stars in the composition, such as mountains or lakes. But these landscapes can't shine, otherwise they will be overexposed. Focus clearly. A wide-angle lens is better.

4. Use the timing cable to release the exposure for more than 20 minutes. 20 minutes exposure can basically drag the star orbit out of the picture 1/5 or so. If it's longer, you can shoot it for 30 to 50 minutes.

If you want the stars in the picture to orbit around a circle, you have to photograph Polaris, and all the stars will revolve around Polaris. Remember, it's not the Big Dipper.