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Astronomija - opšta tema


Jolly Roger

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“Today, the James Webb Space Telescope team completed the mirror segment deployments. As part of this effort, the motors made over a million revolutions this week, controlled through 20 cryogenic electronics boxes on the telescope. The mirror deployment team incrementally moved all 132 actuators located on the back of the primary mirror segments and secondary mirror. The primary mirror segments were driven 12.5 millimeters away from the telescope structure. Using six motors that deploy each segment approximately half the length of a paper clip, these actuators clear the mirrors from their launch restraints and give each segment enough space to later be adjusted in other directions to the optical starting position for the upcoming wavefront alignment process. The 18 radius of curvature (ROC) actuators were moved from their launch position as well. Even against beryllium’s strength, which is six times greater than that of steel, these ROC actuators individually shape the curvature of each mirror segment to set the initial parabolic shape of the primary mirror.

 

“Next up in the wavefront process, we will be moving mirrors in the micron and nanometer ranges to reach the final optical positions for an aligned telescope. The process of telescope alignment will take approximately three months.”

 

—Erin Wolf, James Webb Space Telescope Program Manager, Ball Aerospace

 

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Posted

Tako nekako, sad čekanje :happy:

 

GIF by NDR

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  • 2 weeks later...
Posted

Jesenas se skupilo društvo na zemunskom keju, prošetali malo, popričali i kada smo krenuli da se razilazimo po mraku naiđemo na čovjeka koji je na šetalištu postavio teleskop sa natpisom "Večeras gledamo Saturn". Izredalo nas se desetak velikih i malih, a prizor kuglice sa prepoznatljivim prstenovima koja polako klizi sa desna ulijevo u okularu prizovem ponekad i danas pred spavanje ili dođe samo. Toliko je upečatljiva ta tiha daleka dubina sa sličicom koja ti potvrđuje površno teorijsko znanje i stavlja trešnjicu na vrh zanimanja za SF. Stvarno je, tamo je i divno je.

 

Biće tužno kada i ova velika stvar i njena dostignuća ostanu zatrpani dnevnim šumom besmislenih sadržaja iz medijske i net sfere. Veb kreće u avanturu baš u trenutku opšte zatupljenosti čovječanstva i poniranja u sopstvene zablude. Utisak mi je da će ovo, uz naučnu zajednicu, pratiti vrlo mali broj entuzijasta.

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Posted
46 minutes ago, autsajder said:

Biće tužno kada i ova velika stvar i njena dostignuća ostanu zatrpani dnevnim šumom besmislenih sadržaja iz medijske i net sfere. Veb kreće u avanturu baš u trenutku opšte zatupljenosti čovječanstva i poniranja u sopstvene zablude. Utisak mi je da će ovo, uz naučnu zajednicu, pratiti vrlo mali broj entuzijasta.


Podseća me na uvod u filmu Apolo 13, kad njihova misija malo kog zanima, kao šta sad, bili su već na Mesecu, ništa novo, čak ako se dobro sećam i direktan prenos na tv otkazan zbog slabog interesovanja publike… 

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  • 4 weeks later...
Posted

Zelim da verujem da je Sky doziveo "my god it's full of stars" odiseju..

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  • Redoran changed the title to Astronomija - opšta tema
  • Redoran pinned this topic
  • 2 weeks later...
  • 2 months later...
Posted

Omg omg omg pa to je vrlo uskoro :D

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