args[0]=message
args[1]=DB::DB::Message=HASH(0x53426a0)
Re[6]: Podskazhite pozhaluista po svetofil'tram Habbla
28.06.2007 14:46 | R. G. Chertanov
>Dalee, Habbl byl unikalen svoim vysokim uglovym razresheniem. Ni odnim drugim teleskopom takogo ne povtorit' (v poslednie gody adaptivnaya optika pozvolyaet sdelat' chto-to podobnoe, no na uzkom pole zreniya). Samoletnym uzh tochno.
Est' samoletnyi teleskop SOFIA s zerkalom 2.5 metrov. Zerkalo Habbla - 2.4 metra.
Vy schitaete chto u samoletnogo 2,5-metrovogo zerkala zametno huzhe uglovoe razreshenie?
A ved' na samolet vodruzit' takoe bol'shoe zerkalo navernoe gorazdo proshe chem na sputnik (inache by vmesto Sofii zapustili eshe odin Habbl). I obsluzhivat' ego legche.
>Krome togo, u Habbla svoya, sovershenno osobennaya, PSF (point spread function), kotoraya sil'no otlichaetsya ot drugih teleskopov. Svoi shum detektorov. Svoi razmer pikselei. Svoi vklad ot kosmicheskih luchei. I tak dalee. Chtoby poddelat' nablyudeniya Habbla, nuzhno ih proizvesti na teleskope luchshe Habbla, a zatem uhudshit' parametry tak, chtoby "mimikrirovat'". A takoe poka nevozmozhno :)
Eto vse ponyatno, no samoletnyi teleskop tozhe mozhet imet' svoi shum detektorov i razmer pikselei.
A tot parametr, na kotoryi ya hotel posmotret' (ul'trafioletovye luchi) - okazalsya uhudshennym (kak budto v kosmose nahoditsya malen'koe zerkalo, a horoshie (no ne ul'trafioletovye) snimki delayut vse eti gody samoletom a lya SOFIA)...
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- Kosmicheskii teleskop "Habbl" (scientific.ru, 19.06.1995 23:03, 4.5 KBait, otvetov: 30)
- Podskazhite pozhaluista po svetofil'tram Habbla (R. G. Chertanov, 23.06.2007 13:30, 1008 Bait, otvetov: 7)
- Re: Podskazhite pozhaluista po svetofil'tram Habbla (Dmitrii Docenko, 24.06.2007 20:19, 1.5 KBait, otvetov: 6)
- Re[2]: Podskazhite pozhaluista po svetofil'tram Habbla (R. G. Chertanov, 26.06.2007 19:05, 816 Bait, otvetov: 5)
- Re[3]: Podskazhite pozhaluista po svetofil'tram Habbla (Dmitrii Docenko, 26.06.2007 20:38, 1.3 KBait, otvetov: 4)
- Re[4]: Podskazhite pozhaluista po svetofil'tram Habbla (R. G. Chertanov, 27.06.2007 22:09, 710 Bait, otvetov: 3)
- Re[5]: Podskazhite pozhaluista po svetofil'tram Habbla (Dmitrii Docenko, 28.06.2007 12:12, 1.6 KBait, otvetov: 2)
- >> Re[6]: Podskazhite pozhaluista po svetofil'tram Habbla (R. G. Chertanov, 28.06.2007 14:46, 1.4 KBait, otvetov: 1)
- Re[7]: Podskazhite pozhaluista po svetofil'tram Habbla (Dmitrii Docenko, 28.06.2007 15:58, 2.0 KBait)
- Re: Kosmicheskii teleskop "Habbl" (R. G. Chertanov, 28.06.2007 21:15, 1.3 KBait, otvetov: 2)
- Re[2]: Kosmicheskii teleskop "Habbl" (Dmitrii Docenko, 29.06.2007 11:05, 1.8 KBait)
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