APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Comments and questions about the APOD on the main view screen.
User avatar
APOD Robot
Otto Posterman
Posts: 5433
Joined: Fri Dec 04, 2009 3:27 am

APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by APOD Robot » Mon Oct 31, 2011 4:06 am

Image Ghost of the Cepheus Flare

Explanation: Spooky shapes seem to haunt this starry expanse, drifting through the night in the royal constellation Cepheus. Of course, the shapes are cosmic dust clouds faintly visible in dimly reflected starlight. Far from your own neighborhood on planet Earth, they lurk at the edge of the Cepheus Flare molecular cloud complex some 1,200 light-years away. Over 2 light-years across the ghostly nebula and relatively isolated Bok globule, also known as vdB 141 or Sh2-136, is near the center of the field. The core of the dark cloud on the right is collapsing and is likely a binary star system in the early stages of formation. Even so, if the spooky shapes could talk, they might well wish you a happy Halloween.

<< Previous APODDiscuss Any APOD Next APOD >>
[/b]

User avatar
Beyond
500 Gigaderps
Posts: 6889
Joined: Tue Aug 04, 2009 11:09 am
Location: BEYONDER LAND

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by Beyond » Mon Oct 31, 2011 5:03 am

I have only one thing to say about this ghostly APOD-->BOO!!
To find the Truth, you must go Beyond.

MSP1
Asternaut
Posts: 6
Joined: Wed Aug 31, 2011 7:41 am

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by MSP1 » Mon Oct 31, 2011 7:36 am

Clicking on the main image goes to http://www.star.ucl.ac.uk/~apod/apod/im ... _block.jpg which does not exist!

bactame
Ensign
Posts: 73
Joined: Sun Jan 24, 2010 10:25 am

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by bactame » Mon Oct 31, 2011 8:15 am

The Vargas image of M42 posted September 13 last is another beauty of all hallows eve I've had on my desktop since that time. It is the face of a witch with wispy gray hair and a warty nose. Her eyes and mouth covered by a three fingered hand asking us to be quiet as she sneaks up on our Earthly Lair.

User avatar
starstruck
Science Officer
Posts: 177
Joined: Sat Sep 17, 2011 9:37 am

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by starstruck » Mon Oct 31, 2011 10:27 am

Woo-hoo-hoooo!

Great choice! Uncanny how those dust clouds form shapes that look so ghostly. Also intriguing how the formation on the right hand side of this view looks like something has punched a hole right through the nebula allowing the starlight to shine through like a beam.

User avatar
Indigo_Sunrise
Science Officer
Posts: 439
Joined: Fri Jul 15, 2005 1:40 pm
Location: Md

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by Indigo_Sunrise » Mon Oct 31, 2011 10:40 am

MSP1 wrote:Clicking on the main image goes to http://www.star.ucl.ac.uk/~apod/apod/im ... _block.jpg which does not exist!
You beat me to it, MSP1....

Beyond wrote:I have only one thing to say about this ghostly APOD-->BOO!!
Beyond, is that a good 'BOO'...? :wink:


HAPPY HALLOWEEN, APOD-ers!

:saturn:
Forget the box, just get outside.

User avatar
Beyond
500 Gigaderps
Posts: 6889
Joined: Tue Aug 04, 2009 11:09 am
Location: BEYONDER LAND

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by Beyond » Mon Oct 31, 2011 11:11 am

Indigo_Sunrise wrote:
MSP1 wrote:Clicking on the main image goes to http://www.star.ucl.ac.uk/~apod/apod/im ... _block.jpg which does not exist!
You beat me to it, MSP1....

Beyond wrote:I have only one thing to say about this ghostly APOD-->BOO!!
Beyond, is that a good 'BOO'...? :wink:


HAPPY HALLOWEEN, APOD-ers!

:saturn:
Must be. There's no "HOO" after it. :lol:
To find the Truth, you must go Beyond.

janndave0711

Re: Ask an Astrophysicist - APOD's Dr. Jerry Bonnell

Post by janndave0711 » Mon Oct 31, 2011 11:43 am

How very fun of you, Dr. Bonnell to be so topical today. I check APOD out every day and have turned my grandchildren on to astronomy through APOD. Thanks for making science beautiful and fun!

jimnms
Asternaut
Posts: 3
Joined: Sun Nov 16, 2008 7:37 am

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by jimnms » Mon Oct 31, 2011 12:32 pm

MSP1 wrote:Clicking on the main image goes to http://www.star.ucl.ac.uk/~apod/apod/im ... _block.jpg which does not exist!
One of the links in the description takes you to: http://www.caelumobservatory.com/mlsc/sh2136.jpg

mekohr

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by mekohr » Mon Oct 31, 2011 12:45 pm

Interesting how the two spooks on the left seem to have been formed under the same conditions, like two branches of a snowflake. They each have a left arm extended upward, a large horn on the right side of their head and a horn bud on the left side. Wierd!!

User avatar
orin stepanek
Plutopian
Posts: 8200
Joined: Wed Jul 27, 2005 3:41 pm
Location: Nebraska

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by orin stepanek » Mon Oct 31, 2011 12:53 pm

Happy Hallowaeen! Wiki's Witch Head Nebula. 8-)
Orin

Smile today; tomorrow's another day!

neptunium

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by neptunium » Mon Oct 31, 2011 1:40 pm

The sky is haunted! There are ghosts and witches in there! :mrgreen:

User avatar
bystander
Apathetic Retiree
Posts: 21584
Joined: Mon Aug 28, 2006 2:06 pm
Location: Oklahoma

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by bystander » Mon Oct 31, 2011 2:48 pm

jimnms wrote:
MSP1 wrote:Clicking on the main image goes to http://www.star.ucl.ac.uk/~apod/apod/im ... _block.jpg which does not exist!
One of the links in the description takes you to: http://www.caelumobservatory.com/mlsc/sh2136.jpg
For a different view, see APOD: 2010 Oct 30 and http://apod.nasa.gov/apod/image/1010/Vd ... n_full.jpg
http://asterisk.apod.com/viewtopic.php?f=9&t=21821
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

Boomer12k
:---[===] *
Posts: 2691
Joined: Sun Apr 22, 2007 12:07 am

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by Boomer12k » Mon Oct 31, 2011 4:35 pm

Neat picture. I wonder which "DIRECTION", those "ghosts" are . Are they areas coming out "AT US", or "AWAY FROM US", a 3 dimensional perspective would be interesting....HAPPY HALLOWEEN.....

:-----===== *

User avatar
neufer
Vacationer at Tralfamadore
Posts: 18805
Joined: Mon Jan 21, 2008 1:57 pm
Location: Alexandria, Virginia

Doctor van den Bergh!

Post by neufer » Mon Oct 31, 2011 7:02 pm

http://heritage.stsci.edu/2002/15/bio/bio_bergh.html wrote:
Image
Doctor van den Bergh :!:
http://www.noao.edu/image_gallery/html/im1060.html wrote:
<<vdB 141 is a reflection nebula located in the constellation Cepheus. Sometimes referred to as the ghost nebula, its awkward name is its catalog number in Sidney van den Bergh's catalog of reflection nebulae, published in 1966.>>
<<Sidney van den Bergh was born in Holland in 1929 and had decided that he wanted to become an astronomer by the time he was five years old. After attending Leiden University for a year he received a scholarship to attend Princeton University, where he received his A.B. in 1950. Subsequently he obtained an M.Sc. from Ohio State University and a Dr. rer. nat. from the University of Goettingen in Germany. The first half of his astronomical career was spent at the David Dunlap Observatory of the University of Toronto where he developed an interest in galaxies, star clusters, variable stars and supernovae. The second half of his career was spent in Victoria, British Columbia, where he became Director of the Dominion Astrophysical Observatory. Now, in his retirement, he is spending most of his time on the study of galaxy evolution using images of galaxies at distances of up to ten billion light years that were obtained with the Hubble Space Telescope.>>
Art Neuendorffer

deathfleer

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by deathfleer » Mon Oct 31, 2011 9:31 pm

those dusts collecting to form a star......then a star material must has been uniform , and all stars should be of same material?

User avatar
Chris Peterson
Abominable Snowman
Posts: 18337
Joined: Wed Jan 31, 2007 11:13 pm
Location: Guffey, Colorado, USA

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by Chris Peterson » Tue Nov 01, 2011 12:20 am

deathfleer wrote:those dusts collecting to form a star......then a star material must has been uniform , and all stars should be of same material?
Yes, newborn stars are roughly made of the same thing- about 75% hydrogen and 25% helium. The dust that ends up in a star doesn't contribute more than a few percent of the total. With time, however, stars evolve in different directions, depending on their mass, and end up containing different material.
Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
https://www.cloudbait.com

User avatar
NoelC
Creepy Spock
Posts: 876
Joined: Sun Nov 20, 2005 2:30 am
Location: South Florida, USA; I just work in (cyber)space

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by NoelC » Tue Nov 01, 2011 3:51 am

A most excellent APOD! Really feels like you're out there.

-Noel

Tony Wells

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by Tony Wells » Tue Nov 01, 2011 9:52 pm

While APOD's photos are extraordinary, the grammar and punctuation used in the explanation is, often, very ordinary. That from the 31st of October is an appropriate example of the latter with missing punctuation marks and words. To help you in the future, have added four commas and four additional words in upper case.

Explanation: Spooky shapes seem to haunt this starry expanse, drifting through the night in the royal constellation Cepheus. Of course, the shapes are cosmic dust clouds, faintly visible in dimly reflected starlight. Far from your own neighborhood on planet Earth, they lurk at the edge of the Cepheus Flare molecular cloud complex, some 1,200 light-years away. Over TWO light-years across, the ghostly nebula and relatively isolated Bok globule, also known as vdB 141 or Sh2-136, ARE near the center of the field. The core of the dark cloud, on the right, is collapsing and is likely TO BE a binary star system in the early stages of formation. Even so, if the spooky shapes could talk, they might well wish you a happy Halloween.

User avatar
rstevenson
Quis custodiet ipsos custodes?
Posts: 2705
Joined: Fri Mar 28, 2008 1:24 pm
Location: Halifax, NS, Canada

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by rstevenson » Tue Nov 01, 2011 11:29 pm

Tony Wells wrote:... To help you in the future, have added four commas and four additional words in upper case.

Explanation: Spooky shapes seem to haunt this starry expanse, drifting through the night in the royal constellation Cepheus. Of course, the shapes are cosmic dust clouds, faintly visible in dimly reflected starlight. Far from your own neighborhood on planet Earth, they lurk at the edge of the Cepheus Flare molecular cloud complex, some 1,200 light-years away. Over TWO light-years across, the ghostly nebula and relatively isolated Bok globule, also known as vdB 141 or Sh2-136, ARE near the center of the field. The core of the dark cloud, on the right, is collapsing and is likely TO BE a binary star system in the early stages of formation. Even so, if the spooky shapes could talk, they might well wish you a happy Halloween.
It's always risky to edit someone else's work in public. While I can't speak for the authors, I will offer you my contrary thoughts. Changing 2 to TWO is simply a matter of style. The same is true of your added TO BE. The sentence reads just fine without that addition. As for changing IS to ARE, I'm not so sure. The sentence is a bit convoluted and I'm not clear on whether the object(s) referred to is (or are) one or two things. The "ghostly nebula" could actually be the "Bok globule", and the other two references to it are simply other names for the same thing -- or at least that's how I read it.

Rob

Steve Randall
Asternaut
Posts: 8
Joined: Fri Jun 11, 2010 6:58 am

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by Steve Randall » Sun Nov 06, 2011 5:32 pm

mekohr wrote:Interesting how the two spooks on the left seem to have been formed under the same conditions, like two branches of a snowflake. They each have a left arm extended upward, a large horn on the right side of their head and a horn bud on the left side. Wierd!!
To me, the whole thing looks fractal. The big spook has at least 2 little spooks on his arms. One of the little spooks seems to have lesser spooks along his arms. Could it really be fractal or is this just a coincidence?

User avatar
alter-ego
Serendipitous Sleuthhound
Posts: 1121
Joined: Mon Apr 21, 2008 4:51 am
Location: Redmond, WA

Re: APOD: Ghost of the Cepheus Flare (2011 Oct 31)

Post by alter-ego » Mon Nov 07, 2011 3:01 am

I find the multi-colored diffraction spikes particularly striking and appropriate for this APOD. You don't see the diffractive chromatic affects with such clarity very often. A quality, extended exposure on a 6.5 magnitude star really brings them out.
A pessimist is nothing more than an experienced optimist