In modern astrophotography, using a digital camera to take astronomical photos can take dozens of photos. Although each photo is exposed for only a few minutes and the captured image is underexposed, high-quality pictures can be obtained through computer software synthesis and processing. . From the picture processing process below, we can see the basic process of post-adjustment.
It was shot with Canon EOS 5D Mark Ⅱ. The exposure time for each shot was 3 minutes and 20 seconds. A total of 28 shots were taken. This is one of them. (Note: In order to solve the problems of image noise, image field, etc., it is also necessary to take black field, flat field and other photos, which will not be repeated here)
Through astronomical software synthesis, all the footage is synthesized, which can greatly reduce the labor of the photographer and increase the success rate of picture shooting. On the website, there are some software that can be downloaded for free.
Dozens of pictures are synthesized by astronomical software, and a new picture is obtained. Although at first glance it is not much different from the original one, the internal quality has been greatly improved, whether it is noise control or hierarchical performance, it is completely different.
Use Photoshop software to adjust the composite image, you can see that the image after the white balance processing is very beautiful, you must pay attention to the bright and dark parts of the image when processing, and you can’t ignore the other.
Use Photoshop’s color scale, curve and other functions to process the picture. This work is meticulous. It is repeated adjustments. Don’t expect to adjust it all at once. Excellent image processing experts often take a long time to process a picture.
The processed image allows us to see the beautiful scene of the dark starry sky. From these images, excellent astronomers can read and understand the process of the formation, development, and decay of the planet. When people see these photos, they can appreciate the magic and charm of the universe.
It is only a relative matter that astrophotography is getting easier and easier. From the above introduction, we can see that engaging in astrophotography requires professional equipment and professional technology, and more professional spirit. Although the development of technology has greatly reduced the difficulty of shooting, it is definitely not easy to get. After reading this article, people understand the basic steps and operating essentials of astrophotography. Once in-depth exploration, there are still many difficult technical problems that need to be solved. Because of this, astrophotographic works are basically invisible in national and international film festivals. This is a virgin land to be developed and a promising world for photography enthusiasts. tianwen
Tags: Astrophotography
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