Alpha Geminorum (Castor)

Paolo Morini
Star: Alpha Geminorum, Castor
Date & Time: 29 Nov 2002 ( 21:00 UTC ).
Seeing: 7 ( binos) <1-10 Seeing Scale (10 best)>
Transparency
Temperature
 Conditions: clearing in the mid of a cloudy month,
temp 10 deg C, no Moon
Location of Site: Ravenna. Italy, 
44d30' 12d12E
Site Classification: Urban 
Sky darkness: 4.5 <Limiting magnitude> 
Binoculars: 20x100 Vixen Binoculars,
FOV 2.5 deg
Big difference in magnitude (1.9-8.8) needs an accurate focusing and it's very faint, but an evaluation of PA and a check on the log makes you sure about splitting.