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Skywatchers — Sat, 31 May 2008 06:10:07 CDT

Hello-my name is Alexander Andjelic. I live in Belgrade(Serbia),and I'm
15 years old. I have some photos(afocal method),some sketches...and am a Backyard Astronomer!
My first steps in Astronomy were made with small 40 mm telescope
Then I got a bigger 60/600 and now I have Skywatcher 130/900,60/600,and binocular TS 10x50...

Sketches and photos

Skywatchers — Thu, 21 Feb 2008 10:45:16 CST

Perseids Meteor shower	Moon-22 September 2007
M57	Belgrade
Add photo caption or credit here.	Add photo caption or credit here.

News

Skywatchers — Sat, 02 Feb 2008 10:30:31 CST

NASA photos reveal Mercury is shrinking
By SETH BORENSTEIN, AP Science Writer Thu Jan 31, 7:25 PM ET

WASHINGTON - The first pictures from the unseen side of Mercury reveal the wrinkles of a shrinking, aging planet with scars from volcanic eruptions and a birthmark shaped like a spider.

Some of the 1,213 photos taken by NASA's Messenger probe and unveiled Wednesday help support the case that ancient volcanoes dot Mercury and that it is shrinking as it gets older, forming wrinkle-like ridges. But other images are surprising and puzzling. The spidery shape captured in a photo is "unlike anything we've seen anywhere in the solar system," said mission chief scientist Sean Solomon of the Carnegie Institution of Washington. The image shows what looks like a large crater with faint lines radiating out from it. Mercury, the closest planet to the sun, has often been compared to Earth's dull black-and-white moon. But the new photos, which reveal parts of Mercury never seen, show the tiny planet is more colorful and once had volcanic activity. With the help of NASA high-tech enhancement, Messenger photos showed baby blues and dark reds. "It has very subtle red and blue areas," said instrument scientist Louise Prockter of Johns Hopkins University, which runs the Messenger mission for NASA. "Mercury doesn't look like the moon." The last time a NASA spacecraft went to Mercury was Mariner 10 in 1975. It took pictures of just 45 percent of the planet. Messenger, which will do a couple more flybys of the planet before going into a long-term orbit, already has taken pictures of another 30 percent of Mercury, Prockter said. The rest will be seen eventually. Planetary scientist Robert Strom, who was part of both the Mariner 10 and Messenger teams, said, "This is a whole new planet we're looking at." And Prockter noted "there are some features we haven't been able to explain yet." Example No. 1 is what scientists are calling "the spider." It is in the middle of a basin formed billions of years ago when space junk bombarded an infant Mercury. Mariner had only seen part of the crater. When Messenger took a look with sharper cameras and a better angle, it photographed this odd central plateau jutting up, about half a mile high with dozens of tiny ridges radiating out. It is as if "something is pushed up," said MIT planetary scientist Maria Zuber, who is part of the science team. Prockter guessed that it could be remnants of a volcano. Other scientists think the leg-like features could be the same ridges seen all over Mercury. First seen in the 1970s, the ridges now seen more widely provide evidence that Mercury is contracting, the scientists said. Scientists had theorized that as the core of Mercury cools, it contracts and the whole planet shrinks. That was even a 19th Century theory for why Earth had mountains, but one that later proven wrong, Solomon said. But with Mercury that seems to be the case. As the planet shrinks, a bit of crust is pushed over another, forming what Prockter calls "wrinkle ridges." Besides having what looks like the leftovers from volcanoes, Mercury has at least one crater that seems to be filled with what would be that planet's version of lava, Prockter said. NASA launched the $446 million Messenger on its nearly 5 billion-mile mission in 2004. It will fly by Mercury two more times, this October and September 2009, before settling into orbit around in 2011. Messenger will take pictures, measure the planet's tenuous atmosphere, hills and valleys and unusual magnetic field — Mercury is the only solar system planet other than Earth to have a magnetosphere. Quirky Mercury is one of the bigger question marks in the solar system, probed not nearly as much as Mars, Jupiter, Venus or Saturn. Strom, a retired University of Arizona scientist who worked on Mariner 10, said that as he awaited Messenger's flyby earlier this month, "I couldn't sleep at all. I was like a kid on Christmas Eve." Only he had to wait 30 years for his presents. It was worth it, he said: "What I saw was astounding to me."

Source:Yahoo

Astronomy camp -Letenka 2007

Skywatchers — Sat, 02 Feb 2008 10:22:45 CST

Dodjite na STAR-PARTY-Letenka 2007

dobar astronomski provod

Ko:svi zainteresovani

Kada:od 19.07.2007-22.07.2007

Gde:Srbija>Fruska Gora>Letenka

Sta:Astronomski kamp

Astronomy calendar

Skywatchers — Sat, 02 Feb 2008 10:20:33 CST

There is no abstract available for this page revision.

Links

Skywatchers — Sat, 02 Feb 2008 10:15:25 CST

Zvjezdarnica Forum

Astronomical society ,,Rudjer Boskovic"

http://www.inet.hr/~vevrhova/ (VISUAL ASTRONOMY)

http://www.hrastro.com/ (Great astro-photos)

Astronomy for beginners

Backyard-astronomer

My Observatory

Skywatchers — Tue, 25 Sep 2007 06:21:25 CDT

Belgrade(Serbia)

Latitude ( 4449.606'N) Longitude(2027.376'E)

Place where I spend most of my astro-time,is at my home in my so-called observatory.
Here I enjoy looking trough telescope,and there is a computer with a Night-Vision ON so I can check is that M28 or something else:-)

Equipment

Skywatchers — Mon, 24 Sep 2007 03:58:35 CDT

Telescopes:

-Diameter/Aperture: 130mm
- Focal Length: 900mm
- Aluminized and overcoated mirrors
- 6x24 finderscope
- 130mm primary mirror collects 30% more light than the 114mm, resulting better image resolution and brighter image
- Smooth rack-and-pinion 1.25" focuser
MOUNT
EQ2

Optisan Star60/600

-Diameter:60mm
-Focal Length:600mm
-2x14finderscope

Mount
Aluminium

Binoculars:

Telescope Service 10x50

Useful astronomy informations

Skywatchers — Sun, 23 Sep 2007 14:29:45 CDT

Astronomy is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth's atmosphere (such as the cosmic background radiation). It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the formation and development of the universe. Astronomy is one of the oldest sciences. Astronomers of early civilizations performed methodical observations of the night sky, and astronomical artifacts have been found from much earlier periods. However, the invention of the telescope was required before astronomy was able to develop into a modern science. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation, observational astronomy, the making of calendars, and even astrology, but professional astronomy is nowadays often considered to be identical with astrophysics. Since the 20th century, the field of professional astronomy split into observational and theoretical branches. Observational astronomy is focused on acquiring and analyzing data, mainly using basic principles of physics. Theoretical astronomy is oriented towards the development of computer or analytical models to describe astronomical objects and phenomena. The two fields complement each other, with theoretical astronomy seeking to explain the observational results, and observations being used to confirm theoretical results. Amateur astronomers have contributed to many important astronomical discoveries, and astronomy is one of the few sciences where amateurs can still play an active role, especially in the discovery and observation of transient phenomena.

Taken from Wikipedia(english edition)

Posmatranje-17.06.07

Skywatchers — Mon, 18 Jun 2007 16:54:12 CDT

There is no abstract available for this page revision.

Posmatranje-13.03.07

Skywatchers — Mon, 18 Jun 2007 06:15:22 CDT

Dobio sam teleskop 9.03.07 -ali je ovo prvo posmatranje....Vec sam nestrpljivo cekao da bude vedro i da ,,upregnem"teleskop-pogledao kroz prozor u 20:15 seeing je bio dobar-namontirao teleskop i ugasio svetla-sacekao 20-30min i krenuo.Prvo sam s 10x50 hteo da vidim sta da gledam kroz teleskop i odmah sam video i odlucio se za M42(the great Orion nebula)-stavio u teleskop okular SPL 32mm-M42 se video stvarno prelepo!
Ako se ovako vidi iz predgradja kako se vidi sa Letenke,Golije....
malo sam zastao kod M42 i M43 dok nisu zasli iza krova.
na trenutak sam stao i gledao ono sto mislim da je M67-njega sam pronasao uz pomoc super 10mm-tada sam video da je 23h-hocu da potrazim i Saturn i nalazim ga u sazvezdju Lava-uzeo 10mm okular i malo namestanja i sjajio se s svojim prstenovima...uzivao malo i video da dolaze oblaci s zapada i taman da malo s 10x50 razgledam-prekrili su celo nebo:(

Eto to je moje prvo pravo posmatranje sa 130/900!!

Amateur astronomy - Recently Updated Pages

Main page

Sketches and photos

News

Astronomy camp -Letenka 2007

Dodjite na STAR-PARTY-Letenka 2007

Astronomy calendar

Links

My Observatory

Belgrade(Serbia)

Latitude ( 44*49.606'N) Longitude(20*27.376'E)

Equipment

Useful astronomy informations

Posmatranje-17.06.07

Posmatranje-13.03.07

Latitude ( 4449.606'N) Longitude(2027.376'E)