Saturday 23 May 2009

astrophotography - Are there are any photographs online that approximate what the Milky Way looks like to the unaided eye?

It may be difficult to find proper photos that emulate this, both because given the tools and the subject, most people would opt for longer exposures, and also because of the general difficulty in emulating how our brain processes visual information into an image, especially in low-light or high contrast situations like this. I think the photo at the bottom of this article may be a decent recreation of it, though it's a bit fuzzy and not so wide. Note: There are star trails forming in the image, which is indicative of it being a longer exposure. The image (unless cropped) doesn't appear to be from a wide-angle lens - I would guess somewhere in the 35-50mm range. Perhaps a 10 secondish exposure, but my judgement is more based on result than technique.



What you can see will depend a lot upon the conditions of the night. You're probably not expecting a lot of light pollution, but you also have to keep in mind that your eyes will adjust to light as well. A cell phone or a full moon can be enough to prevent you from being able to see well. If conditions are perfect - little to no light pollution, no light from cars, flashlights, etc, a new moon, low humidity/no clouds, etc, and the milky way is in a good position, you will be able to pick out the galaxy quite well. You should be able to notice both the high concentration of stars as well as the 'milky' lighter shade caused by the many stars too dim or distant to appear bright.

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