Traditional Culture Encyclopedia - Photography major - Why are there no stars in the photos taken between the Chang'e-3 lander and the rover? Please, thank you.

Why are there no stars in the photos taken between the Chang'e-3 lander and the rover? Please, thank you.

The brightness of starlight is negligible compared to sunlight. Even the brightest Venus (magnitude -4.7) is about one 600 millionth as bright as the sun (magnitude -26.7).

What problems will there be during filming? If you pay attention to daytime photography, the exposure time is generally several hundred or even thousandths of a second. What if you want to photograph planets? Even the brightest Venus takes more than an eighth of a second (ISO800). Darker stars will take longer, at least ten seconds in the urban night sky.

Obviously, it was daytime when Chang'e-3 set on the moon, otherwise there would be no shadow. The photo is not overexposed, which means that the exposure time is controlled to a very short time, and the starlight will naturally not be visible. If we want to achieve the latter, then there must be "nothing to see" on the ground.

Most people probably don’t know how difficult it is to take those beautiful starry sky photos. Speaking of the exposure process alone, controlling the balance between starlight and background under long exposure means that you can publish several special series in "Tian Ai".

Finally, let me say something unrelated. The naked eye is such a sophisticated photosensitive instrument. The camera looks very bloated and clumsy under changes in light intensity, but the naked eye can adapt easily in a short period of time. Because of this, I am afraid there is a misunderstanding in the previous paragraph. I'm going too far, let's stop here.