M7: Open Star Cluster in Scorpius : M7 is one of the most prominent open clusters of stars on the sky. The cluster, dominated by bright blue stars, can be seen with the naked eye in a dark sky in the tail of the constellation of the Scorpion . M7 contains about 100 stars in total, is about 200 million years old, spans 25 light-years across, and lies about 1000 light-years away. The featured wide-angle image was taken near the city of Belo Horizonte in Brazil. The M7 star cluster has been known since ancient times, being noted by Ptolemy in the year 130 AD. Also visible are a dark dust cloud on the lower right, and, in the background, literally millions of unrelated stars towards the Galactic center. via NASA
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NGC 3576, an emission nebula in the constellation of Carina 6,000 light years away. -image via paulhaese.net
The Soul Nebula.
47 Tucanae
Orion Nebula from HAWK-1 js
This beautiful supernova remnant is the product of a huge stellar explosion in our neighboring galaxy — the Small Magellanic Cloud (📷 : NASA)
Eta Carinae and Keyhole Nebula (NGC 3324), inside the Carina Nebula (NGC 3372)
Do telescopes actually take colorful photographs or are the pretty colorful photographs of galaxies that we know colored afterwards? If a human was floating through space, would space look colorful to them?
So some pictures are taken in different wavelengths to see different characteristics. (infrared wavelengths to see through thick gas and dust, xray wavelengths to see highly energized regions)
But, in the visible wavelengths you are seeing the colors. They’re just enhanced brighter than they might be.
For example, I took this picture of “the California Nebula” using a camera (Canon 60Da) attached to a telescope. This shows one exposure, and the background is red due to effects of the camera (which you subtract):
You take multiple exposures, combine them, subtract the background effects & adjust the color a little and get this…
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