Monday, November 4, 2013

Oleg Small, who took part in the competition ESO

Zaporozhye Astronomical Club "Altair" "Spiral in Leo
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New image of NGC 3521's Very Large Telescope (VLT) ESO shows the spiral galaxy, which lies about 35 million light-years from Earth in the constellation Leo. By measuring about 50 000 light-years, this spectacular object has a bright compact nucleus, surrounded by a spiral gsp structure with lots of details. gsp
Most characteristic features of the bright galaxy NGC 3521 are its long spiral arms, dotted with star-forming regions that are interspersed with veins of dust. Sleeves rather irregular and patchy, making NGC 3521 a typical example flokulyantnoyi spiral galaxy. These galaxies have "fluffy" spiral arms as opposed to lengthy sleeves majestic spirals such as the famous Galaxy "Whirlpool" or M 51, discovered that Charles Messier.
NGC 3521 is bright and relatively close to what is easily seen with the help of a small telescope, gsp such as those used at the conclusion of Messier catalog number and Misty kometopodobnyh facilities in the 1700s. Ironically, the French astronomer seems to have missed it flokulyantna spiral, although he found several other galaxies of similar brightness in the constellation Leo.
It took only a year since the Messier published the final version of his catalog in 1784, when still a famous astronomer William Herschel discovered NGC 3521 early on a detailed survey of the northern gsp sky. With its large 47 cm telescope, Herschel saw a "bright center surrounded by a nebula", according to his record observations.
In this new image from the VLT, colorful, gsp yet ill-defined spiral arms substitute "Nebula" Herschel. Older stars dominate the reddish area in the center and hot young blue stars permeate the arms further away from the nucleus.
Oleg Small, who took part in the competition ESO's Hidden Treasures 2010 [1], selected gsp data from the instrument FORS1, which VLT telescope at the Paranal Observatory, ESO (Chile). They also were used to create this wonderful gsp image. Exposure taken through three different filters that passed blue light (blue color made in the image), yellow-green light (green) and near-infrared light (red) that also were combined to make this picture. Time exposures through each filter was 300 seconds. Image of NGC 3521 by Oleg occupied a high place in the competition, which attracted nearly 100 works. Notes
[1] Competition "ESO's Hidden Treasures 2010" gave amateur astronomers the opportunity to search in large astronomical data archives ESO hoping to find a well-hidden gem that participants had to "polish". To find out more about Hidden Treasures, visit http://www.eso.org/public/outreach/hiddentreasures/
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