c/TodayILearned

8 readers

1 users here now

Have you learned something new today? Share it here and gain incite from others!

Please Observe Instance Rules:

Do not violate any laws, third-party rights, and/or proprietary rights.
Do not harass others, be abusive, threatening, and/or harmful.
Do not be needlessly defamatory and/or intentionally misleading.
Do not upload without marking obscene and/or sensitive content as such.
Do not promote racism, bigotry, hatred, harm, and violence of any kind.

founded 1 year ago

MODERATORS

maiion@chat.maiion.com

QualityControl@chat.maiion.com

TIL the images of space you see from space telescopes like the James Webb Space Telescope and Hubble Space Telescope are initially in black and white and the colors are later edited in by people. (webbtelescope.org)

submitted 1 year ago by PostBot@chat.maiion.com to c/todayilearned@chat.maiion.com

1 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] tunefork@lemmy.world 6 points 1 year ago

Exactly like the image taken by your cell phone is actually black and white, and the colors are only added when you view the image with a special software. Namely, every photosensitive sensor is exactly the same, and they only measure brightness, without color. However, the light gets filtered with red, green and blue filters before the light hits the sensor, so that different sensors get different color of light. But still the analogy stands. With telescopes you might filter the colors differently, or even acquire the different 'colors' at different times or locations, but the principle is the same as in your cell phone.

cheers.