args[0]=message
args[1]=DB::DB::Message=HASH(0x6707b80)
Re[3]: Kosmicheskii teleskop "Habbl"
3.07.2007 15:54 | R. G. Chertanov
>Ne zabyvaite pro difrakciyu. Uglovoe razreshenie "Habbla" v UF v 5-10 raz luchshe, chem v IK.
Esli nalozhit' vibraciyu na vidimyi svet i na IK, konechnyi rezul'tat-to v bolee korotkovolnovom uchastke budet ne huzhe, chem u IK, ne tak li. A dazhe luchshe, esli vibraciyu udaetsya effektivno gasit'. A sudya po nalichiyu v vozduhe Sofii, gasit' ee dlya zerkala diametrom 2,4 metra udaetsya vpolne effektivno.
To est', u nas est' uhudshayushii faktor A, i on nakladyvaetsya na pomehi B i b.
A - eto vibraciya, B i b - eto uhudshenie, vnosimoe dlinoi volny (v sluchae infrakrasnyh luchei - bol'shoe, v sluchae vidimyh luchei - pomen'she).
Snimki sdelannye s pomehami A i B (infrakrasnye) budut nu nikak ne luchshe, chem A i b (vidimye).
Poetomu NASA dolzhno ob'yasnit', pochemu u nih vidimye i ul'trafioletovye snimki ne takie horoshie po kachestvu, kak eto pozvolyaet zerkalo. I ono ob'yasnilo - tipa polomka vot tut u nas, doblestnye astronavty (v svoih perchatkah) chinili-chinili, no ul'trafiolet pri etom prishlos' isportit' okonchatel'no.
Vopros zapustit' vtoroi Habbl dazhe ne stavilsya. Poetomu i voznikayut somneniya, a ne s samoleta ili s shara li oni delayut svoi zamechatel'nye ne-ul'trafioletovye snimki...
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- Re: Kosmicheskii teleskop "Habbl" (R. G. Chertanov, 28.06.2007 21:15, 1.3 KBait, otvetov: 2)
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