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Recent Submissions: 2011 August 7-9
Posted: Fri Feb 04, 2011 4:56 am
by owlice
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Re: Recent Submissions
Posted: Sun Aug 07, 2011 4:47 am
by owlice
Milky Way Sky
Copyright: Maritza Lopez
[attachment=5]DSC_0094_ret.jpg[/attachment]
Cohen 129 LBN 552 LDN 1228 - Dance of the Demons
Copyright: Harel Boren
[attachment=0]Cohen 129 LBN 552 LDN 1228 - Dance of the Demons.jpg[/attachment]
Algol and Rho Persei
Copyright: Greg Parker
[attachment=4]Algol_Rho_persei_APOD.jpg[/attachment]
Two-day-old Moon and the Griffith Observatory
Copyright: Susan J. Cooley and Alex McConahay
[attachment=3]CooleyMoonGriffithParkFinal.jpg[/attachment]
Big Dipper
Copyright: Luis Evangelista
[attachment=2]dipper.jpg[/attachment]
Active Solar Regions
Copyright: Ctein
[attachment=1]Solar_Features_Lineup_0027.jpg[/attachment]
Re: Recent Submissions
Posted: Sun Aug 07, 2011 5:02 am
by mexhunter
Re: Recent Submissions
Posted: Sun Aug 07, 2011 6:42 am
by Ann
Greg Parker, thank you for photographing one blue and one red star to bring out their colors!
Blue Algol is one of the sky's most mythological stars, the eye of the demon, which has long been known to change in brightness. We now know that Algol is a binary, consisting of one big but dim red star and one smaller but much brighter blue star. Originally the now-red star was bright and blue, but then it ran out of fuel, expanded, cooled and turned red (really orange). It expanded so much that it filled its so-called Roche lobe (ask neufer to explain), its outer layers got very close to the compact blue component, and the blue component started siphoning off gas from the orange primary. Now the blue component has robbed its red "sibling" of so much gas that the red star has shrunk and become really dim, whereas the blue component has beefed up. We see this binary pair almost edge-on. When the red component passes in front of the bright blue star, Algol dips noticeably in brightness!
Red Rho Persei is what the orange component of Algol may once have been. It is a very cool, very big and quite bright star: no Betelgeuse, but quite bright nevertheless. It is about 400 times brighter than the Sun in visual light, and perhaps tens of thousands of times brighter in total energy output (because most of the energy produced by cool Rho Per is infrared light). And it is just barely possible that the blue component of Algol will once become as big, bright and cool as Rho Persei, although I find that slightly doubtful.
Rho Per is intrinsically brighter than Algol, but it looks dimmer, because it is more than three times farther away.
Well, what a fascinating stellar duo (or trio) you photographed for us, Greg!
Ann
Re: Recent Submissions
Posted: Sun Aug 07, 2011 9:46 am
by Maciej Kapkowski
[attachment=0]spiralgal.jpg[/attachment]
http://www.astrofun.pl/M31.jpg
M 31 is a member of our Local Group together with Milky Way, M 33 and 50 others galaxies.You can see also M 32 ( left from M 31) and M 110 ( right from M 31 ) as wells as young stars cluster NGC 206 ( blue area verticaly down from M 31 center).
FSQ 196n, STL 11k, EM-11.
L:R:G:B- 3:1:1:1 h.
Warsaw, Poland. August 2011
Re: Recent Submissions
Posted: Sun Aug 07, 2011 12:23 pm
by Robmski
Re: Recent Submissions
Posted: Sun Aug 07, 2011 4:01 pm
by owlice
Colorado Aurora
http://www.jwestlake.com
Copyright: Jimmy Westlake
[attachment=4]Aurora2862 080511.jpg[/attachment]
Hawaiian Crater and Star Field
Copyright: Richard Richins
[attachment=3]CraterStackd.jpg[/attachment]
Atlas 5 Puts Juno Probe on its Way to Jupter
http://www.launchphotography.com/Juno.html
Copyright: Ben Cooper/launchphotography.com
[attachment=2]Juno_cooper.jpg[/attachment]
NGC 6334: The Cat's Paw Nebula
Copyright: Tahir Saban
[attachment=1]ngc6334_1024_saban.jpg[/attachment]
Fragmentation Event in Comet 213P/Van Ness
http://remanzacco.blogspot.com
Copyright: Ernesto Guido, Giovanni Sostero, Hannah Blyth & Nick Howes
[attachment=0]picture (1).jpg[/attachment]
Re: Recent Submissions
Posted: Sun Aug 07, 2011 4:23 pm
by lup974
Starry Night from Réunion
http://www.lucperrot.fr/
Luc Perrot
Re: Recent Submissions
Posted: Sun Aug 07, 2011 8:29 pm
by owlice
Eagle & Swan Mosaic
downthewormhole.blogspot.com
Copyright: John A Davis
[attachment=2]Eagle_Swan_B92_Pluto_mosaic_small.jpg[/attachment]
Veil Nebula
http://www.almadenobservatory.net/veil/ ... v-half.png
Copyright: Rob Hawley
[attachment=1]veil_hawley.jpg[/attachment]
M74: Spiral Galaxy in Pisces
http://www.azstarman.net
Copyright: Bernard Miller
[attachment=0]M74_PS5_CROP_FULL.jpg[/attachment]
Re: Recent Submissions
Posted: Mon Aug 08, 2011 2:41 am
by SalvatoreGrasso
Messier 8 - The Lagoon Nebula
http://WWW.SgAstrophotography.com
Copyright: Salvatore Grasso
Re: Recent Submissions
Posted: Mon Aug 08, 2011 8:51 am
by Greg Parker
Thank you for the great write-up on this one Ann
You know far more about these stars than I do - I just thought they looked pretty, and was very surprised at how photogenic just two bright stars turned out to be (helped greatly of course by the contrasting colours).
Ann wrote:Greg Parker, thank you for photographing one blue and one red star to bring out their colors!
Blue Algol is one of the sky's most mythological stars, the eye of the demon, which has long been known to change in brightness. We now know that Algol is a binary, consisting of one big but dim red star and one smaller but much brighter blue star. Originally the now-red star was bright and blue, but then it ran out of fuel, expanded, cooled and turned red (really orange). It expanded so much that it filled its so-called Roche lobe (ask neufer to explain), its outer layers got very close to the compact blue component, and the blue component started siphoning off gas from the orange primary. Now the blue component has robbed its red "sibling" of so much gas that the red star has shrunk and become really dim, whereas the blue component has beefed up. We see this binary pair almost edge-on. When the red component passes in front of the bright blue star, Algol dips noticeably in brightness!
Red Rho Persei is what the orange component of Algol may once have been. It is a very cool, very big and quite bright star: no Betelgeuse, but quite bright nevertheless. It is about 400 times brighter than the Sun in visual light, and perhaps tens of thousands of times brighter in total energy output (because most of the energy produced by cool Rho Per is infrared light). And it is just barely possible that the blue component of Algol will once become as big, bright and cool as Rho Persei, although I find that slightly doubtful.
Rho Per is intrinsically brighter than Algol, but it looks dimmer, because it is more than three times farther away.
Well, what a fascinating stellar duo (or trio) you photographed for us, Greg!
Ann
Re: Recent Submissions
Posted: Mon Aug 08, 2011 12:22 pm
by owlice
Spinning Prominence
http://www.galacticimages.com
Copyright: John Chumack
[attachment=1]sun2x080711_spinfilamentChumackHRweb.jpg[/attachment]
M10: Globular Star Cluster
http://www.azstarman.net
Copyright: Bernard Miller
[attachment=0]M10_PS1_CROP_FULL.jpg[/attachment]
Butterfly Nebula region
Posted: Mon Aug 08, 2011 9:38 pm
by bogdanjarzyna
Butterfly Nebula (IC1318), LDN889, Crescent Nebula (NGC6888), M-29 in Cygnus
ProLine FLI 16803, FSQ 106 EDXIII, AP Mach1GTO
Ha (7,5h) subframe 1800s :
http://starrysite.com/pliki/galeria/duz ... koniec.jpg
Ha, SII, OIII (15,5h) sub-frame Ha 1800s/SII, OIII 1200s binx2
http://starrysite.com/pliki/galeria/duz ... KONIEC.jpg
Luczanowice, Poland
Bogdan Jarzyna
http://www.starrysite.com
Re: Recent Submissions
Posted: Mon Aug 08, 2011 9:45 pm
by Ugur Ikizler
Saturn's Dance With Porrima
In this year's retrograde motion, Saturn approached nearly 15 arcminute to Porrima (Gamma Virgo) until June 11th and then continue its way to the East.
With an anticipation of nice scenery, I started taking photos when this couple first entered into my cameras field of view. Between May 11th and July 26th, I have recorded 3.763 frames (31.8 hours) in 43 clear nights. Then I tried to put all these frames together to display this beautiful dance:
http://www.bulutsu.org/gecici/SaturnPorrima.mpg
As you can see, at some nights back ground views are not sharp because of fog or moon light.
Regards,
Ugur Ikizler
Bursa / Turkey
Email :
ugurikizler@gmail.com
Re: Recent Submissions
Posted: Mon Aug 08, 2011 10:00 pm
by marcelozurita
Starry sky over Guia Church
http://www.panoramio.com/user/marcelozurita
http://www.flickr.com/photos/mzurita/
Copyright: Marcelo Zurita
Starry sky over Church of Nossa Senhora da Guia. The moon lights up the old church built in 16th century by Carmelite Order in the Churrigueresque style.
Other sizes in:
http://www.flickr.com/photos/mzurita/60 ... hotostream
Re: Recent Submissions
Posted: Tue Aug 09, 2011 5:34 am
by dsnope
Here is NGC6979, Pickering's Triangle, portion of the Veil Nebula Supernova Remnant
Image is a bicolor narrowband.
Ha 11 x 20 mins
O3 11 x 20 mins
Telescope is a TEC160FL 6" APO
Camera is an SBIG STL11K
Copyright: Dave Snope
[attachment=0]triangle.jpg[/attachment]
Larger image available at:
http://www.pbase.com/dsnope/image/137058213/original
Re: Recent Submissions
Posted: Tue Aug 09, 2011 9:45 am
by owlice
Kelvin-Helmholtz Wave Clouds over Rolla
Copyright: Rob Hribar
[attachment=3]khwaveclouds.jpg[/attachment]These waves elsewhere
Ghost Town under a Milky Way Sky
http://www.AstronomyTimeLapse.com
Copyright: Tony Rowell
[attachment=2]BodieGhostTown_MilkyWay_Rowell.jpg[/attachment]
Perseid Aurora
Copyright: Ross Sinclair
[attachment=1]IMG_1932a.jpg[/attachment]
Dark Neighborhood of NGC 7000 in Narrowband
http://www.starrysite.com/index.php?sit ... ryitem,293
Copyright: Michael Zolnowski
[attachment=0]MZ NGC 7000 mikro kopia.jpg[/attachment]
Core of M94, Starburst-Ring Galaxy in Canes Venatici
http://www.robgendlerastropics.com/M94-HST-Gendler.html
Copyright: Data: Hubble Legacy Archive; Processing: Robert Gendler
Re: Recent Submissions
Posted: Tue Aug 09, 2011 10:19 am
by Wolfgang
M31
Copyright: Wolfgang Promper
[attachment=0]promper.jpg[/attachment]
http://www.astro-pics.com/31hm.jpg
http://www.astro-pics.com/31hm.htm
Re: Recent Submissions
Posted: Tue Aug 09, 2011 11:06 am
by rstevenson
That's an excellent image of M31 Wolfgang. Very clean. Very beautiful.
Thank you for posting it.
Rob
Re: Recent Submissions
Posted: Tue Aug 09, 2011 12:51 pm
by Ann
I, too, am very impressed with your image of M31, Wolfgang.
Ann
Re: Recent Submissions
Posted: Tue Aug 09, 2011 3:07 pm
by Emilio_R
Around Galactic Center
Copyright: Emilio Rivero
Re: Recent Submissions
Posted: Tue Aug 09, 2011 3:26 pm
by Ann
Emilio, now that I see that you are online, I must say that your Milky Way picture is very impressive. You've managed to make the Milky Way look like a mix between a monster smoking furnace and a fantastic, amazing collection of hundreds of billions of stars, which themselves seem to bubble out of the Milky Way like yellow smoke.
Great image! I like that the brightest part of the Milky Way's bulge is at top!
Ann
Re: Recent Submissions
Posted: Tue Aug 09, 2011 3:58 pm
by Ann
Robert Gendler, thank you very much for processing the Hubble image of the starforming ring of galaxy M94! I'm very fascinated by this ring, which is very large and bright, much more so than most "inner rings" of spiral galaxies. Your image clearly reveals all the pink emission nebulae in the ring, which says something about the number of O-stars that must exist in this ring and how much ongoing star formation there must be in there.
That's a fascinating and very revealing image, Robert! Thank you!
Ann
Re: Recent Submissions
Posted: Tue Aug 09, 2011 5:25 pm
by kenpendlebury
Eastern Veil from Texas
Image of the Eastern Veil (Ha and OIII).
Full resolution image located here:
http://www.flickr.com/photos/kenastro/6 ... otostream/
Other details located here:
http://www.flickr.com/photos/kenastro/6 ... hotostream
Re: Butterfly Nebula region
Posted: Wed Aug 17, 2011 8:19 pm
by mtbdudex
bogdanjarzyna wrote:Butterfly Nebula (IC1318), LDN889, Crescent Nebula (NGC6888), M-29 in Cygnus
ProLine FLI 16803, FSQ 106 EDXIII, AP Mach1GTO
Ha, SII, OIII (15,5h) sub-frame Ha 1800s/SII, OIII 1200s binx2
http://starrysite.com/pliki/galeria/duz ... KONIEC.jpg
Luczanowice, Poland
Bogdan Jarzyna
http://www.starrysite.com
visually this appeals to me ...stunning
