Starship Asterisk*

[float=right][img2]http://cdn.spacetelescope.org/archives/images/screen/opo0834a.jpg[/img2][c][size=85]NGC 3324. Photo: Hubble.[/size][/c][/float] [float=left][img2]https://static1.squarespace.com/static/5a18a65ba803bbe2355d8de2/5aae0058758d463a22379f54/5aae0601352f533ca558e0f9/1521754277778/14.jpg[/img2][c][size=85]The poet considering her own sharp features (at right). Photo: Joseph M. Drudis.[/size][/c][/float]

There's a hole in the bottom of the sea,
There's a hole in the bottom of the sea,
There's a hole, there's a hole,
There's a hole in the bottom of the sea.

Looks more like Alfred Hitchcock to me. :ssmile

[quote="Chris Peterson" post_id=281286 time=1523042904 user_id=117706]
[quote=snuggs28 post_id=281285 time=1523042367 user_id=143429]
Do we know how deep that nebula is? Is there a 3D model of it?
[/quote]

To a first order we assume nebulas like this are spherical. That is, assume a thickness similar to the width. Usually that's the best we can do, since the error bars on distance are usually greater than the size of the nebula. For a few closer nebulas, parallax measurements may provide distance information for interior stars. We generally lack the information to make 3D maps.
[/quote]

Thanks! I'm a noob when it comes to this stuff!

[quote=snuggs28 post_id=281285 time=1523042367 user_id=143429]
Do we know how deep that nebula is? Is there a 3D model of it?
[/quote]

To a first order we assume nebulas like this are spherical. That is, assume a thickness similar to the width. Usually that's the best we can do, since the error bars on distance are usually greater than the size of the nebula. For a few closer nebulas, parallax measurements may provide distance information for interior stars. We generally lack the information to make 3D maps.

Do we know how deep that nebula is? Is there a 3D model of it?

[quote=Ann post_id=281272 time=1522997576 user_id=129702]
Great picture, certainly.


[float=left][img2]http://www.capella-observatory.com/images/BestOfImages/NGC3293u3324.jpg[/img2][c][size=85]NGC 3324 with NGC 3293. Photo: Capella Observatory.[/size][/c][/float] Me being me, I prefer RGB images. And I really like seeing the fine Gabriela Mistral nebula accompanied by the beautiful NGC 3293 cluster.

Ann
[/quote]
I love the Gem Cluster, one of the best southern open clusters!

The blue is a "face in Profile"...eyes, nose, lips, chin, facing to our right...like the "Man in the Moon"...but turned...hmmmm... maybe it is "Gabriella"...

Lovely image.

:---[===] *

Great picture, certainly.


[float=left][img2]http://www.capella-observatory.com/images/BestOfImages/NGC3293u3324.jpg[/img2][c][size=85]NGC 3324 with NGC 3293. Photo: Capella Observatory.[/size][/c][/float] Me being me, I prefer RGB images. And I really like seeing the fine Gabriela Mistral nebula accompanied by the beautiful NGC 3293 cluster.

Ann

[url=https://apod.nasa.gov/apod/ap180406.html] [img]https://apod.nasa.gov/apod/calendar/S_180406.jpg[/img] [size=150]NGC 3324 in Carina[/size][/url]

[b] Explanation: [/b] [url=https://www.martinpughastrophotography.space/ngc3324]This bright cosmic cloud[/url] was sculpted by stellar winds and radiation from the hot young stars of open cluster NGC 3324. With dust clouds in silhouette against its glowing atomic gas, the [url=https://www.eso.org/public/news/eso1207/]pocket-shaped[/url] star-forming region actually spans about 35 light-years. It lies some 7,500 light-years away toward the nebula rich southern constellation [url=https://apod.nasa.gov/apod/ap180105.html]Carina[/url]. A composite of narrowband image data, the telescopic view captures the characteristic emission from ionized sulfur, hydrogen, and oxygen atoms mapped to [url=http://hubblesite.org/reference_desk/faq/answer.php.id=93]red, green, and blue hues[/url] in the popular Hubble Palette. For some, the celestial landscape of bright ridges of emission bordered by cool, obscuring [url=http://hubblesite.org/news_release/news/2008-34]dust along[/url] the right side create a recognizable face in profile. The region's popular name is the [url=http://www.verschatse.cl/nebulae/ngc3324/medium.htm]Gabriela Mistral Nebula[/url] for the Nobel Prize winning Chilean poet.


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