Zdravstvuite! Ochen' hochetsya uznat', kak orientirovat'sya v koordinatah,  
predstavlenyh v sleduyushem vide: RA 4.35941 Dec 12.11749 Feb 09, 2003 
Kak ya ponyal, kovyryayas' v zagolovkah failov FITS, RA oznachaet Object Right  
Ascension. Mne ne ponyatno, chto eto takoe. Eshe ya ne ponyal, chto oznachaet chislo  
posle Dec, hotya v tom zhe zagolovke FITS govoritsya, chto eto Object Declination. 
Privedu vyderzhki iz etogo zagolovka: 
RA      = '04 20 10.10'        / [hours J2000] Target right ascension 
OBJCTRA = '04 20 10.10'        / [hours J2000] Target right ascension 
DEC     = '+11 58 52.5'        / [deg +N J2000] Target declination 
OBJCTDEC= '+11 58 52.5'        / [deg +N J2000] Target declination 
Eto vyderzhki iz zagolovka k failu *.fts, kotoryi pri otkrytii special'noi  
programmoi predstavlyaet soboi snimok oblasti neba... V zagolovke soderzhitsya  
kucha raznyh parametrov tipa vysheukazannyh koordinat, vremeni s'emki, ob'ekta i  
vsyakih parametrov izobrazheniya... 
Vopros: kak zhe vse-taki orientirovat'sya v privedennyh koordinatah?

> Privedu vyderzhki iz etogo zagolovka:  
> RA      = '04 20 10.10'        / [hours J2000] Target right ascension  
- Target - podozrevayu, chto imeetsya vvidu koordinaty (pryamoe voshozhdenie v  
sisteme koordinat 2000 goda) centra snimka 
> OBJCTRA = '04 20 10.10'        / [hours J2000] Target right ascension  
- da, eto pryamoe voshozhdenie ob'ekta (v sisteme koordinat 2000 goda) 
> DEC     = '+11 58 52.5'        / [deg +N J2000] Target declination  
- sklonenie centra snimka 
> OBJCTDEC= '+11 58 52.5'        / [deg +N J2000] Target declination  
- sklonenie ob'ekta 
 
> Vopros: kak zhe vse-taki orientirovat'sya v privedennyh koordinatah? 
Vsyudu idet rech' o klassicheskih nebesnyh koordinatah epohi 2000 goda.  
Vkratce, "na pal'cah",  pryamoe voshozhdenie - nebesnaya dolgota, sklonenie -  
nebesnaya shirota. Podrobnee Vy mozhete posmotret', naprimer, po adresu -  
http://hea.iki.rssi.ru/~nick/astro/spher.htm i  
http://hea.iki.rssi.ru/~nick/astro/sceq.htm 
Vne vsyakogo somneniya, est' chto-to o nebesnyh i na samom Astronete, na dat' link  
ya seichas poka zatrudnyayus'.

> Zdravstvuite! Ochen' hochetsya uznat', kak orientirovat'sya v koordinatah,   
> predstavlenyh v sleduyushem vide: RA 4.35941 Dec 12.11749 Feb 09, 2003  
 
V predydushem otvete vse sovershenno verno, no net otveta na pervyi vopros 
RA 4.35941 oznachaet pryamoe voshozhdenie v dolyah chasa, to est' 
4h 30m stanet 4.50000, sootvetstvenno 4.35941 = 04h 21m 33.88s 
Dec 12.11749 - sklonenie v dolyah gradusa, to est' 
12.11749 = 12 ° 07' 03.0" 
 
Ostaetsya vopros ob epohe koordinat. Naskol'ko mne izvestno, koordinaty na 
epohu nablyudeniya dayutsya kraine redko, obychno po umolchaniyu privodyatsya koordinaty 
J2000 
 
P.S. Seichas sushestvuet neskol'ko rasprostranennyh form predstavleniya 
koordinat, vklyuchayushih epohu, naprimer: J121342.4+100521, chto oznachaet  
R.A.=12h 13m 42.4s  Dec.=+10 ° 05' 21" na epohu J2000, ili 
B010503.5-000250, oznachayushee R.A.=01h 05m 03.5s  Dec.=-00 ° 02' 50"