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Astronomers of Valpovo's greatest achievement Print E-mail
Written by Denis Vida   
Saturday, 27 March 2010 10:17

Klikni za detaljeThe news of the discovery of the supernovae has been published on Zvjezdarnica.com, Croatia's leading web portal on astronomy.

What are supernovae? Supernovae are one of the most energetic and powerful explosions in the universe. They can sometimes be brighter that a whole galaxy in which they are situated! Supernovae last relatively short, appearing visible for only a couple of weeks or months. By discovering supernovea we help answer some of the cosmologists' greatest questions on matery, the beginning and the end of our universe. In average, however, supernovae tend to appear every 100 years in a galaxy the size of our Milky Way.

So how do we find even more supernovae? We need to look into different galaxies. A lot of different galaxies.

Hvala Danijelu na objavi.

Astronomsko društvo Anonymus, La Sagra Sky Survey

Tu se u priču uključuje LSSS (La Sagra Sky Survey). LSSS je projekt OLS-a (Observatorio Astronomico de La Sagra), automatizirane zvjezdarnice u Španjolskoj, koji vode S. Sanchez, J. Nomen, R. Stoss, B. Yeung, J. Rodriguez i M. Hurtado. Njihov glavni cilj je potraga za asteroidima i tzv. NEO-ima (Near-Earth object) koji bi mogli predstavljati prijetnju Zemlji. Treba napomenuti da je OLS najuspješnija europska zvjezdarnica po pitanju otkrivanja asteroida, te da su samo NASA-ini projekti u svijetu uspješniji od LSSS-a. No to je jedna sasvim druga priča.

Ono što nas zanima jest činjenica da 3 robotizirana teleskopa (svaki promjera objektiva 0.45 m) na OLS-u tijekom jedne noći snime vrlo velike dijelove neba, koji uz asteroide, sadrže čitavo mnoštvo galaksija. To je uvidio Reiner Stoss, njemački astronom koji trenutno živi i radi u Višnjanu, te se bavi LSSS-om. Reiner je nakon dugog poznanstva s Filipom Novoselnikom, koji su se upoznali na jednoj od Višnjanskih Škola Astronomije (VSA), odlučio nama ponuditi mogućnost da iskoristimo ogromnu količinu podataka, te počnemo tražiti supernove. Filip je okupio mali tim ljudi: Denis Vida, Ivica Skokić i Robert Gregić.


Tim koji ostvaruje uspjehe, valpovački astronomi: Ivica Skokić, Filip Novoselnik, Denis Vida i Robert Gregić

Naš cilj je bio napisati softver koji bi obradio sve te slike, od kojih svaka ima preko 20 MB. Trebalo je pronaći galaksije koje slika sadrži, izrezati dijelove s galaksijama, te sve to postaviti na web stranicu preko koje bi se tim mogao spajati i pregledavati slike. Pod pregledavanjem podrazumijeva se uspoređivanje slike galaksije koju je snimio OLS, sa slikama koje su snimile neke druge zvjezdarnice. Sam proces pregledavanja nije lak. Na slikama zna biti asteroida (koji su u stvari i glavni cilj snimanja LSSS-a), grešaka na slici, supernova koje su već otkrivene…

No, mislim da se možemo smatrati vrlo uspješnima. Softver smo počeli pisati oko Božića 2009., testnu verziju smo pustili u pogon 4. ožujka, i nakon oko 10 000 pregledanih slika našli smo novu supernovu! Treba napomenuti da smo u međuvremenu pronašli 3 već pronađene, što nas je jako ohrabrilo jer znamo da sustav funkcionira.

Za kraj nešto o samoj supernovi. Nakon potvrde otkrića od strane A. Drakea iz Catalina Sky Surveya, naša supernova je dobila oznaku SN 2010AX te je uvrštena na IAU listu. SN 2010AX se nalazi u zviježđu Volara u galaksiji PGC 1383919 (z=0,051) 16. magnitude, 6"N i 6"E od središta galaksije i trenutno je između 17.-18. magnitude.

Čestitke dečkima!

 

 

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Bravo dečki, pokazali ste da možete ostvariti rezultate na svjetskom nivou. Želim vam još puno novih otkrića u astronomiji!
Saturday 27 March 2010, 15:20
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Capturing the crescent Moon - 17/04/2010< Prev   Next >How we discovered of a supernova!
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