Saturn's Retrograde Motion and Porrima http://www.astrosurf.com/pixiel
Copyright: Robert Cazilhac [attachment=0]animationretrosaturnporrima.gif[/attachment]
Jupiter Rises in the Summer Sky http://www.Parssky.com
Copyright: Mohammad Rahimi [attachment=3]IMG_9850-edit-APOD.jpg[/attachment]
Craters Babbage (Large center) and Robinson (Center mid size) are located on a lava filled basin at the north/west region of the moon and its fill with many craterlets on its surroundings. This image was reduced due to its six panels (Mosaic) of 640x480 ea. at high magnification (frame lines left intentionally).
In the year 1054 AD, astronomers in many parts of the world recorded an extraordinary event … the appearance of a brilliant new star in the sky. The starlight was so intense that it could easily be seen in the daytime for over three weeks, with rays seemingly stemming in all directions, and it persisted in the night sky for over two years. Estimates of its brightness range from several times that of Venus to nearly that of the Full Moon. Unknown to these early sky watchers, they had witnessed a supernova … the colossal explosion of a massive star at the end of its life. The star lay over 6,000 light-years from Earth, and the still-expanding cloud of debris can be seen with a telescope today, known as the Crab Nebula. In the pre-dawn hours of July 05 in that year, a slender crescent Moon hung in the sky very close to this spectacle. A Native American Anasazi artist is believed to have captured the striking view by painting the scene on a rock face in the Chaco Canyon of New Mexico, shown here at the lower right.
NLC Display from Edmonton http://vimeo.com/25918041
Copyright: Greg Scratchley [attachment=2]July1-2011-EdmontonAB-NLC.jpg[/attachment]
avdhoeven wrote:Daniel Verloop and myself have worked last month on the pelican nebula with the following result. In total about 27 h of image data was used.
I'm curious as to whether the 'snakey' looking things in the upper center in the yellow area are from working with the images, or are actually seen in the telescopic pictures?
Re: Recent Submissions
Posted: Wed Jul 06, 2011 8:26 am
by owlice
Homunculus Nebula
Copyright: Stefan Buda [attachment=5]WebcamHomunculus.jpg[/attachment]
Artificial NLC made by Russian rocket
Translated from Russian with Google Translate:
June 27, 2011 in 20 hours 00 minutes Moscow time from Plesetsk launch vehicle "Soyuz-U" successfully launched a spacecraft series "Cosmos" in the interests of national security. Launch vehicle "Soyuz-U" is designed and manufactured in the company Space Agency - the State Research and Production Space Rocket Center "TsSKB-Progress" (Samara). ----
Apparently the Russian rocket caused the formation of artificial Noctilucent Clouds in mesopause altitude 80-85 km. They had a normal speed for the hight (mesopause) about 7,5 hours from Russia to Denmark. In the time-lapse video, you can see how the artificial NLC ring came from east, followed by normal natural formed NLC.
I would like to suggest any of the short videos on dakotalapse.com for APOD. Interesting in that they are time-lapse pictures of the stars but the camera also moves. I don't know if the owner would agree or not.
Posted: Wed Jul 06, 2011 5:36 pm
by nuclearcat
Star trails over Turkish National Observatory located at 60km west of Antalya, Turkiye at 2500m elevation. This composite picture is a combination of 360 separate pictures which are 30s of exposures which makes totally 3 hours of exposure.
Click on the image above to see a higher-resolution version with more information.
C11 Edge, modified Canon 550D, 4 hours total exposure at f/10 at ISO 1600
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Re: Recent Submissions: 2011 July 2-7
Posted: Sat Jul 09, 2011 5:36 pm
by Ann
There are many nice images here!
I'm always happy to see a new galaxy picture by Adam Block. NGC 5905 and 5908 are an interesting pair. NGC 5905, the face-on one, looks much "wilder" and looser than NGC 5908, whose arms seem to be tightly wrapped around its bulge. My impression is that NGC 5905 is of a "later" type than NGC 5908, although of course I can't be sure. NGC 5908 is extremely dusty, and the light from its bulge is very strongly reddened. NGC 5905 has a fantastic long straight bar surouded by a perfect ring. Anyway, great picture, Adam!
I was glad to see the picture of NGC 3324, too. Did you know that the bright blue star, HD 92207, is a rare A-type supergiant star like Deneb?
There are many great pictures of noctilucent clouds here. My favorite is the picture of noctilucent clouds behind a Dublin bridge. The bridge looks like a giant harp making some fantastic music that makes even the sky and the water dance with color!
