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Are Hubble Images real ?
I have been seeing images captured by Hubble space telescope for a while now . There is no doubt they have immense beauty in them and the various colours in a single nebulae are so good .
But , would I see a nebula or galaxy with my naked eyes in just the same way as I see them in Hubble image ? Or are the hubble images enhanced by false colors ?. It is heart-breaking to hear that the beautiful nebulae we see in hubble images may not appear to be so colorful and beautiful , if we happen to go near them and see with our own eyes .
please explain .
thanks.
Hubble images can be either real or false colour depending on what the aim of getting that image was. It is common to colour images to highlight particular features or radiation wavelengths.
Most are taken in true colour. The colour only shows up as a result of very long exposures, however. It is really there, but the nebulae are so faint that even if we look at them through a telescope with our own eyes, there is so little light coming from them that the colour receptors of the eye can't register it. We can see only a faint grey cloud. That the colour is really there, however, can be verified by photographing them with long exposures on film.
And finally, going closer to a nebula actually makes them even less visible. They are very tenuous clouds of gas, only visible to us because they are so far away. The closer we get the more dispersed they are across our field of view, and the less we see of them. It's like clouds in the sky: they seem big and thick and fluffy from down here, but if you fly into one it seems very insubstantial.
Nebulae are beautiful, but their beauty can only be truly appreciated using photographic techniques.
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