Recent Submissions: 2011 July 28-August 2

owlice · Post by **owlice** » Fri Feb 04, 2011 4:56 am

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owlice · Post by **owlice** » Thu Jul 28, 2011 11:18 am

The Baby Eagle Nebula (LBN 777) in Taurus
http://eder.csillagaszat.hu/lbn777_eder_en.html
Copyright: Iván Éder
[attachment=1]Baby Eagle_Eder.jpg[/attachment]

Comet Garradd at Full Color
http://cometografia.es
Copyright: José J. Chambó
[attachment=4]2009p1_110709_800x563.jpg[/attachment]

Noctilucent Clouds before Dawn
More
Copyright: George Ensing
[attachment=0]nlc_ensing.jpg[/attachment]

NGC 6888: Crescent Nebula
http://www.photonhunter.at/NGC6888_full.html
Copyright: Patrick Hochleitner and Dieter Beer
[attachment=3]ngc6888_Hochleitner_Beer.jpg[/attachment]

Mineral Moon
http://www.danielegasparri.com/mineral_web_gasparri.jpg
Copyright: Daniele Gasparri
[attachment=2]Mineral Moon.jpg[/attachment]

lup974 · Post by **lup974** » Thu Jul 28, 2011 2:39 pm

Milky Way, satellites and canoe
http://www.lucperrot.fr/
Copyright: Luc Perrot

: Click to view full size image

Here is a photo taken in Nosy Komba, a small island in the north of Madagascar. This country is one of the poorest in the world and especially on this island, the life takes place as in the Middle Ages. The movements are done in canoes (stemming from the Indonesian immigration) or in carts pulled by Zebus.
Here, the electricity is rare. In consequense, the sky is magnificent!
On this picture, we can notice a large number of crossing satellitte. The contrast between the highest technology and rudimentary life of the Malagasy is surprising ...

Rothkko · Post by **Rothkko** » Fri Jul 29, 2011 7:04 am

20 segundos de exposición en las afueras de Mérida, España, el 27 de julio de 2011.
http://www.artelista.com/obra/1091646875698641-st.html

owlice · Post by **owlice** » Fri Jul 29, 2011 11:24 am

Interacting Galaxies NGC5394 and NGC5395
http://www.terrastro.com
Copyright: Alex Cherney and Noel Carboni
[attachment=2]arp84_GTC_Cherney_Carboni.jpg[/attachment]

Plane and Sun
http://www.flickr.com/photos/danicaxete ... otostream/
Copyright: Dani Caxete
[attachment=1]dani_sun.jpg[/attachment]

Themis Solar Telescope at Tenerife
Copyright: Greg Parker
[attachment=0]Themis_Solar_Telescope.jpg[/attachment]

owlice · Post by **owlice** » Fri Jul 29, 2011 1:37 pm

Hercules Galaxy Cluster
http://www.caelumobservatory.com/gallery/n6050.shtml
Copyright: Adam Block/Mount Lemmon SkyCenter/University of Arizona

: Click to view full size image

Emission Nebula IC 1396
http://www.philippemoussette.com
Copyright: Philippe Moussette
[attachment=3]ic1396_24juil11.jpg[/attachment]

Wide Field: Environs of IC 4628
http://cosmicphotos.com/gallery/image.p ... album_id=9
Copyright: Jason Jennings
[attachment=2]jase.jpg[/attachment]

NGC 6888: Crescent Nebula
http://www.manuelj.com/Astronomy/Planet ... 8-Crescent
Copyright: Manuel Jimenez
[attachment=1]manuel.jpg[/attachment]

SH2-140 in Cepheus
http://www.starkeeper.it/SH2-140.htm
Copyright: Leonardo Orazi
[attachment=0]orazi.jpg[/attachment]

templec · Post by **templec** » Sat Jul 30, 2011 2:21 am

36-panel Solar Composite Mosaic - June 29, 2011
http://cntastro.smugmug.com/Astrophotog ... 8wJBf-A-LB
Copyright: 2011 Craig & Tammy Temple

: Click to view full size image

Ann · Post by **Ann** » Sat Jul 30, 2011 6:50 am

Jason Jennings, I love your IC 4628 image. To me, your image is primarily a fantastic illustration of the interplay between hydrogen gas and hot massive stars.

The red hydrogen gas in this image forms a kind of broken ring. The brightest part of this ring is IC 4628.

The ring has been set aglow by several hot and massive stars inside it. The most important source of ionization is a small bright bluish and slightly triangular-shaped cluster, NGC 6231. This is one of the more remarkable clusters known in the Milky Way, probably comparable to NGC 869, one member of the Double Cluster. The Capella Observatory has lovely portraits of both NGC 6231 and and NGC 869, so that you can compare them:

NGC 6231 is here.
NGC 869 is here.

In your image, Jason Jennings, there is a bright and compact triangle of stars below NGC 6231. You can see this triangle very well in the Capella Observatory image of NGC 6231 that I gave you a link to. The brightest, orange-colored star (to the upper left in the triangle) is just a foreground star, but the star to the right of it in your image is a massive hot supergiant star, Zeta-1 Scorpii, probably comparable to Alnilam, the middle star in Orion's Belt. But Zeta-1 Scorpii is almost certainly brighter.

Let's return to the red ring of ionized hydrogen. In the upper right of this ring, at about 2 o'clock, is an "elephant trunk" or a "cometary nebula", called the Dark Tower in Scorpius. For a close-up of the Dark Tower, see here.

Of course, as a blue star fetishist, I can't help pointing out the lovely blue double star near the top of your image. This is Mu1 and Mu2 Scorpii. I don't think they are really close enough to be a true physical pair, but they do share a common proper motion. Why are they so blue compared with Zeta-1 Scorpii and NGC 6231? It is because they are so much closer to us and so much less reddened by interstellar dust. The intrinsic colors of Zeta-1 Scorpii and NGC 6231 are every bit as blue.

Finally, why is the red nebulosity here shaped like a ring? And why does NGC 6231 appear to sit in the middle in this ring, where there is no red gas at all? That is because NGC 6231 first used up a lot of gas when it came into being - because stars are made of gas, of course - and then the mighty stellar winds of these hot behemoths blew away the rest of the gas. So NGC 6231 sits in a "clearing" in our galaxy, an almost gas-free clearing of its own making.

What a great picture, Jason!

Ann

ComputerHotline · Post by **ComputerHotline** » Sat Jul 30, 2011 7:03 pm

Light pollution
Credit: Thomas Bresson (photos here and here)

http://www.flickr.com/photos/computerho ... 990509333/

: Click to view full size image

http://www.flickr.com/photos/computerho ... 990510131/

: Click to view full size image

Stars constellations
Credit: Thomas Bresson (photos here and here)

http://www.flickr.com/photos/computerho ... 991065588/

: Click to view full size image

http://www.flickr.com/photos/computerho ... 990506753/

: Click to view full size image

http://www.flickr.com/photos/computerho ... 991063174/

: Click to view full size image

Ann · Post by **Ann** » Sat Jul 30, 2011 7:57 pm

Adam, you're back!!! With a fantastic portrait of the Hercules cluster! Where is the "jumping up and down" smilie?

I just love your image, which is full of stunning detail. However, I'm too tired to say much more now, because it's late here and I'm going to bed.

But I'm so glad to see your fantastic new image!

Ann

BMAONE23 · Post by **BMAONE23** » Sun Jul 31, 2011 12:13 am

owlice wrote:The Baby Eagle Nebula (LBN 777) in Taurus
Click to view full size image
Copyright: Iván Éder

snip

More than a baby eagle, this picture looks like a Cosmic Hamster

: Click to view full size image

astroligu · Post by **astroligu** » Sun Jul 31, 2011 5:50 am

the comet C/2009P1 Garradd above the eps Peg Enif

https://picasaweb.google.com/astroligu/ ... 1513474834

: Click to view full size image

copyright: Rolando Ligustri

regards

Ann · Post by **Ann** » Sun Jul 31, 2011 7:35 am

Adam, I wish I could reproduce your image in my post, so that it would be easier to discuss it. I will try to talk about it anyway.

The Hercules Cluster is a remarkable galaxy cluster, because it is so rich in spirals and obviously interacting galaxies. This means, I think, that the Hercules Cluster is young as a cluster, because otherwise the galaxies would have been "shorn" of their spiral arms and long tidal tails.

I'll try to talk about the picture from top to bottom. The top part of it contains, in the right-hand corner, a remarkable interacting pair of elliptical galaxies. These two galaxies, IC 1178 och IC 1181, lack gas and star formation, but they are throwing out huge tails of old yellow stars. This kind of interaction and merging of gas-free galaxies are called "dry mergers". They don't produce any star formation. However, it is likely that remnants of these thrown-out tails of yellow stars leave behind faint arcs or shells, which are often seen around giant elliptical galaxies.

If you move down to just above the middle part of the picture and go to the left edge of the image, you can see another interacting pair. These are NGC 6040A and 6040B. These two galaxies are undergoing a "wet merger" with gas and star formation. The face-on galaxy doesn't have much gas, but you can see faint blue shells of young stars surronding the bright yellow bulge of the galaxy. The edge-on galaxy has spiral arms, or possibly a broken "ring", of bright blue star formation regions. The edge-on galaxy is clearly distorted because of the merger.

Now let's go to the "mid-plane" of the picture. Almost in the dead center of it, just a little bit to the right, is one of the most famous denizens of the Hercules Cluster. That is galaxy NGC 6045A, the gently "undulating" spiral galaxy with a yellow inner region and outer blue arms. But the most fascinating thing about NGC 6045A is that it appears to "balance" a small edge-on galaxy on its "foot", or "nudge it" with its "foot"! Like a soccer player! Well, if you ask me, the small edge-on galaxy, NGC 6045B, is probably a background object, which is not directly interacting with NGC 6045A. But what a pair they are, nevertheless!

Now move to the right of NGC 6045, and you'll come to what is probably the most famous members of the Hercules Cluster, NGC 6050A and NGC 6050B. In this famous Hubble Telescope picture of NGC 6050, you can see that it consist of threes, possibly four interacting galaxies!!! There is a small galaxy tangled in the spiral arms below the main interacting pair. And there is even what looks like a fourth galaxy to the left of the third one! Where is the "jawdrop" smilie?

Note how one of the two large galaxies is producing huge clusters of newborn massive stars, so called super star clusters. Note that this galaxy doesn't really seem to have a nucleus, only a bar running between its two main spiral arms! The other large galaxy is clearly more massive. It has a large bulge, an obvious nucleus and well-formed arms.

To the lower right of the NGC 6050 triplet (or quartet???) in Adam Block's image, you can see an oblong blue and yellow galaxy, surrounded by a somewhat misshapen ring. My software refuses to give this galaxy a name, other than, perhaps, PGC 57077. I am the owner of a book, "The Color Atlas of Galaxies", whose author, James D Wray, was amazed at PGC 57077, which he mistakenly called NGC 6054. (That is another galaxy.) James D Wray wrote about PGC 57077:

NGC 6054 [PGC 57077] is the galaxy at lower left [at lower left in his own photo of it] with the extraordinary blue bar. There are practically no galaxies with bars similar to this...

So the bar of PGC 57077, with its extremely bright blue bar-ends, is remarkable.

Now move down a bit in the picture and go slightly to the right, until you come to a galaxy with a long blue jet. At an angle of a bit more than 90 degrees to this jet, there is another jet, ending in a big arc-shaped bow shock. The galaxy is IC 1182. And if the bar of PGC 57077 is remarkable, then the (main) jet of IC 1182 is sure remarkable, too! The jet of M87, seen here in a famous Hubble picture, has nothing on the jet of IC 1187! Well, I guess it does after all, because M87 is a much, much bigger galaxy than IC 1187, so it is possible that the respective jets of these two galaxies are of a similar size. Still, the jet of IC 1187 is truly remarkable, and not less so because the galaxy obviously has another jet, too.

So all in all, Adam Block has given us a remarkable portrait of a remarkable galaxy cluster. I hope that many people here will keep scrutinizing the image on their own, because there are still more things to see in this amazing photo of a galaxy zoo!

Ann

astroligu · Post by **astroligu** » Sun Jul 31, 2011 1:37 pm

comet C/2009 P1 Garrad near global cluster M15
copyright : Rolando Ligustri
https://picasaweb.google.com/astroligu/ ... 6608182274

: Click to view full size image

owlice · Post by **owlice** » Sun Jul 31, 2011 3:27 pm

BMAONE23 wrote:More than a baby eagle, this picture looks like a Cosmic Hamster

And to me, NGC 6888 looks like brains, not a crescent, and the North American Nebula like a blockhead yelling at someone.

If a nebula can be characterized as cute, this one certainly is!

owlice · Post by **owlice** » Sun Jul 31, 2011 7:05 pm

Teide Telescopes Panorama
Copyright: Greg Parker
[attachment=5]Teide_telescopes_panorama.jpg[/attachment]

Cygnus Mosaic
http://www.astrofun.pl/cm.jpg
Copyright: Maciej Kapkowski
[attachment=6]cygnus mosaic.jpg[/attachment]

Lenticular Cloud, Lake Tahoe
Copyright: Misha Svoiski
[attachment=4]DSC_1144.JPG[/attachment]

Star Trails over the Temple of Demeter, Naxos
Copyright: Scott Friend
[attachment=3]Temple of Demeter.jpg[/attachment]

Hubble Space Telescope Transit of Jupiter
http://www.flickr.com/photos/vontom/598 ... hotostream
Copyright: Tom Harradine
[attachment=2]hstjupiter.jpg[/attachment]

Comet C/2009 P1 (Garradd)
http://i176.photobucket.com/albums/w189 ... garrad.jpg
Copyright: E. Guido, P. Smith, G. Sostero and N. Howes
[attachment=1]comet.jpg[/attachment]

DWB-111: The Propeller Nebula
Larger image
Copyright: Bill Snyder
[attachment=0]201106724_Propeller_SII-Ha-OIII-PS1-V2+mask-2150x-.jpg[/attachment]

Fireflies, Star Trails, and Rising Moon
Copyright: Mike Rosinski

: Click to view full size image

jldauvergne · Post by **jldauvergne** » Mon Aug 01, 2011 10:06 am

Realy a great pîcture Mike !
Is their a way to contact you ?

mtbdudex · Post by **mtbdudex** » Mon Aug 01, 2011 1:28 pm

jldauvergne wrote:Realy a great pîcture Mike !
Is their a way to contact you ?

Thx,
I just registered here, my user name "mtbdudex" I use at many forums on the net.

I meant to capture about 45-55 minutes of 20 second exposures 10:40pm - 11:30pm, but fell asleep, woke up 3am.....and went outside to retrive the set-up.
The T1i battery had died, even though hot night the dew point was enough below the actual temp the lens stayed clear.

specs:
T1i + 15-85 @ 15mm, each 20 sec exposure, over 370 images, just over 2 hrs of images.
Captured as RAW, import into Aperture 3, no PP whatsoever, just export as TIFF for StarStax to make startrails. All done in Mac OsX.
The moon rose around 12:30am, and its reflection is seen in the 2 garage windows as it ascended.

I made a 15 second video clip from the 370+ frames, you can see the moonrise in the garage lower RH and upper middle window.
This video is between 10:45pm and 1am.

Link to YouTube HD 720p version:
[youtube]http://www.youtube.com/watch?v=ie-6PNG_TKI&hd=1[/youtube]

btw,
@ Canon P.O.T.N., I also have my 2010-2011 " Top 10 in 2010 to shoot (Astronomy, non telescope)" http://photography-on-the.net/forum/sho ... p?t=838078

owlice · Post by **owlice** » Mon Aug 01, 2011 1:43 pm

Stock 2: Open Cluster in Perseus
http://www.newforestobservatory.com/
Copyright: Greg Parker
[attachment=0]stock2_apod.jpg[/attachment]

Ann · Post by **Ann** » Mon Aug 01, 2011 2:01 pm

Rolando Ligustri, I like your two images of Comet C/2009P1 Garradd. I appreciate the fact that you have capturd the comet close to interesting objects in space and created fine compositions. You gave me a reason to look up Enif, the mouth (or nose?) of Pegasus, the winged horse. Enif is a supergiant star of spectral class K2Ib, probably at least 3,900 times the luminosity of the Sun. You gave me a reason to check out globular cluster M15 too, one of the most centrally compressed of all globulars, whose center may harbour a small-to-medium-sized black hole.

Thank you for the very fine color balance of your pictures, Rolando. And thank you very much for telling us the name of bright star Enif and the Messier number of globular cluster M15, so that I could check out the background of your images!

And Mike Rosinski, I really like your picture of star trails and firefly trails! The color contrast between the whitish and sometimes blue-white stars and the strongly yellow fireflies is fascinating. Of course, the contrast of the shapes of the trails left behind by the stars and the fireflies is fascinating, too.

And Greg Parker, thank you for your portrait of seldom photographed but interesting cluster Stock 2. The cluster appears to be young, since my software tells me that it contains stars of spectral class B0 and B2. But these stars are strongly reddened, so the cluster must be pretty far away. It is probably located in the Perseus arm of our galaxy

Finally, I vote for naming the Baby Eagle Nebula the cutest nebula of the year. So cuddly!

Now swallow this beakfull of goodies for Mommy, OK?
The painting is by Oscar Figuracion Jr.

Ann

AlexMaragos · Post by **AlexMaragos** » Mon Aug 01, 2011 3:50 pm

The Milky Way of July 30, 2011 at the Deer Island (Simos beach, Elafonisos, Greece).

With very low light pollution at the Deer Island,
that night the gorgeous Milky Way was visible even with naked eye.
Copyright: Alexandros Maragos

The Milky Way at Elafonisos, Greece by Alexandros Maragos

Paul Haese · Post by **Paul Haese** » Tue Aug 02, 2011 12:03 am

Sol the Magnificent. Details on the page
Copyright Paul Haese
Full size image seen here
[attachment=0]Haese.jpg[/attachment]
http://paulhaese.net/Solar%20Images/mos ... 11%20c.jpg

mexhunter · Post by **mexhunter** » Tue Aug 02, 2011 1:38 am

Chain of Active Regions, four consecutive ones.

Copyright: César Cantú

[attachment=0]cantu.jpg[/attachment]

http://www.astrophoto.com.mx/upload/201 ... 10af21.jpg

Also: http://www.astrophoto.com.mx/picture.ph ... category/6

marcelozurita · Post by **marcelozurita** » Tue Aug 02, 2011 2:24 am

Boat, Moon and Mercury After Sunset
http://www.panoramio.com/user/marcelozurita
Copyright: Marcelo Zurita
[attachment=0]zurita.jpg[/attachment]
http://static.panoramio.com/photos/orig ... 676772.jpg

jase · Post by **jase** » Wed Aug 03, 2011 4:12 am

Ann wrote:Jason Jennings, I love your IC 4628 image. To me, your image is primarily a fantastic illustration of the interplay between hydrogen gas and hot massive stars....

Thanks Ann! I appreciate the comprehensive review and annotation of the scene.

Regards,
Jason
cosmicphotos.com

Starship Asterisk*

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the comet Garradd over Enif

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