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View Full Version : Astrophoto: The North American and Pelican Nebulae by Don Goldman



Fraser
2006-Jul-18, 09:30 PM
We live in a universe filled with galaxies. Galaxies are vast gravitationally bound aggregations of hydrogen gas clouds, stars that are produced when part of a cloud collapses under its own enormous weight, atoms that have been ionized by stellar radiation and dust formed from the remnants of previous stars that have either exploded or thrown off their outer layers during old age. Of these, the largest directly observable constituents are the hydrogen gas billows. Older terms survive within the astronomical lexicon. Any extended object in the sky (other than the Sun, Moon, planets and comets) has at one time or another been called a nebula. The root meaning, however, is cloud and it's now most often used to reference places that contain gas and dust such as the view provided by the image accompanying this article.


Read the full blog entry (http://www.universetoday.com/2006/07/18/astrophoto-the-north-american-and-pelican-nebulae-by-don-goldman/)

ToSeek
2006-Jul-19, 02:38 PM
That's a gorgeous image!

davimill
2006-Jul-19, 06:40 PM
This is a fantastic photo, particularly considering the huge amount of light pollution in the Sacramento area. It's surprising that several hours of exposure there didn't wash out the image. Congratulations to Mr. Goldman. I'm curious, though, about the 11 million megapixel CCD that the article mentions. 11 million million pixels? I'm guessing that it's only 11 megapixels.

turbo-1
2006-Jul-19, 07:16 PM
Beautiful image. In that orientation, the NA nebula looks like a leering death's head (totenkopf).

Kootenaistar
2006-Sep-19, 06:53 AM
Sorry Davimill, I can't find any mention of any millions of megapixels. As you said it should, the statement reads 11 megapixels. However, having a friend with scope who is just getting into astrophotography, I would have not complained on a bit more detailing on the actual filterization and layering done to produce this "portrait of nature", as I might call it. I would have run to her with that info. (Of course, her technical warehouse may already have the info, just not the gear or time, right now.) But, "I shall swear on this universe that I shall never stop enjoying, whenever possible, so long as we both shall live!"