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Re[4]: Kosmicheskii teleskop "Habbl"
14.07.2007 17:28 | Dmitrii Docenko
Uvazhaemyi R.G.!
U menya takoe vpechatlenie, chto vy ili ne chitaete, ili ne vosprinimaete moi otvety.
a. Naschet vibracii i difrakcii. Razreshenie, opredelyaemoe vibraciei, ne zavisit ot dliny volny (vy sami pishete "ne huzhe, chem u IK"). Razreshenie, opredelyaemoe difrakciei, proporcional'no dline volny (ya uzhe pisal, "Uglovoe razreshenie "Habbla" v UF v 5-10 raz luchshe, chem v IK.").
V etom i delo. Esli vy optimiziruete teleskop pod IK, v UF razreshenie budet ne huzhe, no vryad li budet mnogo luchshe.
K tomu zhe atmosfera sovershenno neprozrachna okolo 100-150 nm, gde u Habbla est' kak minimum spektry (naprimer, http://adsabs.harvard.edu/cgi-bin/bib_query?2004ApJS..152...29P; eto nichem ne osobennaya stat'ya, prosto ya s nei rabotal). Eti spektry polucheny s shirinoi sheli 0."2, dlya zemnyh (i letayushih) teleskopov eto bessmyslenno, tak kak razreshenie teleskopa mnogo huzhe (men'she 0."5, naskol'ko ya znayu, nigde ne primenyaetsya). Esli vy nu sovsem ne verite, ya dayu ssylku na arhiv ishodnyh dannyh; posmotrite, prover'te: http://archive.stsci.edu/mastbibref.php?bibcode=2004ApJS..152...29P
Dalee. "A sudya po nalichiyu v vozduhe Sofii, gasit' ee dlya zerkala diametrom 2,4 metra udaetsya vpolne effektivno." Otvet'te, esli ne slozhno, mne na vopros: kakoe razreshenie SOFII na 300 nm? Ili na drugih dlinah voln v UF. Vse eti obshie slova vrode "vpolne effektivno" ochen' krasivy, no nichego ne dokazyvayut. Chisla dokazhut vse.
b. "Poetomu NASA dolzhno ob'yasnit', pochemu u nih vidimye i ul'trafioletovye snimki ne takie horoshie po kachestvu, kak eto pozvolyaet zerkalo."
Opustim vopros o tom, chto vam dolzhno NASA.
Snova, pohozhe, vy ne chitali moi otvety. Razreshenie u UF snimkov/spektrov otlichnoe. Effektivnost' malen'kaya. Ya pisal "Teleskop Habbla v UF diapazone ne tak uzh silen iz-za korrektiruyushego fil'tra", no ne poyasnil, chto eto otnositsya k chuvstvitel'nosti, a ne k razresheniyu.
Ya razveyal vashi somneniya?
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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)
- Re[2]: Kosmicheskii teleskop "Habbl" (pointedlynovell liu, 24.11.2022 6:53, 7.8 KBait)
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- >> Re[4]: Kosmicheskii teleskop "Habbl" (Dmitrii Docenko, 14.07.2007 17:28, 2.0 KBait, otvetov: 10)
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