Picture of the Day: Earth from ROK Lunar Orbiter
This photo, provided by the Korea Aerospace Research Institute on Sept. 26, 2023, shows an image of the Earth that South Korea’s first lunar orbiter, Danuri, took with its high-definition camera while it was orbiting above the moon on Sept. 15. (Yonhap)
Well, first off, it’s a tremendous accomplishment for South Korea. I don’t recall any other nation but one sending back photos like that
But I can remember back in 1968 when they had color photography…
May the Lord bless us all with peace and goodwill among nations
Setnaffa, not sure about this situation, but black and white digital cameras are the standard way to take space pictures (and others).
B&W cameras are high resolution and have a wide frequency response (IR to UV)
The magic is that you can place filters (e.g. R, G, B) in front of the camera and then combine the images for a great color picture. You can also use an IR filter and see things like vegitation… or a UV filter and see whatever the hell bees are looking at.
Specific filters can find specific features that have a unique reflecrive spectrum.
Maybe Korea just had a B&W camera, but they probably kust released a b&w image.
I am super busy now but if I have time, I will look at the expected luminance of Australia in different frequencies and see if I can reverse-math my way into working out the frequency response of the picture.
That will tell us a lot about what equipment this picture was taken with.
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