* * * * * C/2004 V13 (SWAN) * * * * *

Year Mn Day    MM  Mag Ref Scope Pwr coma  DC tail p.a. Obs  Site
2005  1  8.38   S 10.5 TJ  40.0L 144  1.7  1            YOS  Ibaraki, Japan
(Extremely low in the evening glow. Very hard to see. It seems to be diffuse, but it was hard to determine
how large it was. My estimate seems too bright because I felt it around mag. 11.5 or so.
2005  1  7.80   S 11.5 TK  20.3T 100   2   3            GON  Aralla, Leon
(Mountain location, very clear sky. Zodiacal light. Difficult observation at low altitude.)
2005  1  7.48   S 11.9 GA  25.4L  71                    SEA  Cowra, NSW
(Very difficult object. I formed the impression that the enhancement with Swan Band filter [though still
evident] became progressively less each night, though difficult to be sure with such a faint object.)
2005  1  6.78   S 11.5 TK  20.3T 160  1.5  3            GON  Aralla, Leon
(Mountain location, very clear sky. Zodiacal light. Difficult observation at low altitude.)
2005  1  6.47   S 12.1 HS  38.0L  75   2   1            MAT  Stockport Observatory, SA
(Extremely diffuse, at 14 degrees altitude, twilight interference.
CCD image displays no central condensation to 17th magnitude.)
2005  1  6.46   S 11.6 GA  25.4L  71   1                SEA  Cowra, NSW
(A little clearer than previous evening, being somewhat higher in a darkening sky. Enhanced using
Swan Band filter, but maybe not as much as previous night.)
2005  1  5.45   S 11.7 GA  25.4L  71                    SEA  Cowra, NSW
(Quite strongly enhanced using Swan Band filter, but still a very difficult object.)
2005  1  3.78   S 10.8 TK  20.3T  77  1.5  3            GON  Aralla, Leon
(Mountain location, very clear sky. Zodiacal light. Difficult observation at low altitude.)