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Monday, February 27, 2012

Venus, Moon and Jupiter 2012

Venus, Moon and Jupiter one hour after the sunset. This photo is taken on Feb. 26th, 2012 near Stuttgart, Germany. A high resolution photo is available here.

Sunday, February 05, 2012

M35 and NGC2158 in Gemini

"Oh, my God! It's full of stars!"

Two apparent neighbor star clusters belong to the most attractive objects of the Gemini constellation. The small open cluster (NGC2158) is far behind the large one. The light of the 97 variable stars in NGC2158 needs almost 13000 years to reach the large open cluster (Messier 35) in the foreground.

Equipment: FSQ-106ED(f/5), Nikon d3100, Aperture(Mac), MaximDL. This photo is the result of three stacked, unguided exposures with 184+145+114 seconds.

Wednesday, February 01, 2012

The dying star in the Pinwheel galaxy

Good evening ladies and gentlemen! Do you remember the star exploded in the Pinwheel galaxy last year? I blogged my observation five months ago at http://xipteras.blogspot.com and since many people found that thread interesting I decided to revisit that galaxy again to find out how the supernova SN2011fe now looks like. From the beginning, it was clear for me, I had to use a bigger instrument than last year and a sensitive astrocamera exposing for a long time since the supernova remnant should be remarkably fainter now than last year. This time, I had to go really deep, so I made 7 sub exposures with 15 minutes each at 704mm focal length (f/5.4). I stacked and processed the sub exposures with special software to make it happen. Here is the galaxy M101 and the area around it. There is only one question now: "Can we still see the supernova remnant five months later?"
The answer is "Yes, we can!" See below:

"The Pinwheel Galaxy (also known as Messier 101 or NGC 5457) is a face-on spiral galaxy in the constellation Ursa Major." [Source: Wikipedia]
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Find more information at: http://messier.seds.org or http://en.wikipedia.org
A high resolution photo is also available at: http://dark.astrodigital.net