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Main Astronomical Index.
Active objects etc..

The Twin Quasar QSO0957+561.
SN2004dj in NGC 2403.
Vega Spectrum.
Beta Lyrae Spectrum.
XY Lyrae Spectrum.
P Cygni Spectrum.
Y Cygni Spectrum.
1921+50 CH Cygni Picture + Spectrum.
2007+20 FG Sagittae Picture + Spectrum.
2138+43 SS Cygni Picture + Spectrum.
NSV 26185.
AL Comae.
Rho Cassiopeiae.
BL Cam.
XTEJ1118+480 in Ursa Major.
Markarian 421.
AN Ursae Majoris.
3C 66A.
3C 371.
BL Lacertae.
Qu 0716+714.
Nova in Aquila 2001.
Nova in Cygnus 2001.
Second nova in Cygnus 2001.
Nova in M31, August 2001.
Nova in M31, October 2001.


Light-curves, Brightness calculations


Some older ST-4 tests on variable stars. Compairing with AAVSO mags.