Comet Observations 13th & 14th September 2011 C/2011 Q4 SWAN
2011 Sep 13.37 UT; m1= 10.7; Dia= 1.8’; DC= 1/2; 25cm L, f:5 (x83)
Coma very diffuse, appears to have a slight elongation NW to SE, central condensation diffuse, averted vision. Enhances with Swan Band filter, no tail. Twilight, zodiacal light and moonlight interference.
Comp Star= TYC 6138-367-1; Method= S; Cat= TJ
C/2009 P1 Garradd
2011 Sep 13.38 UT; m1= 8.1; Dia= 6’; DC= 5; 25cm L, f:5 (x39)
Tail to SSE, 6’ in length. Central condensation small but bright, very faint and tenuous elongation to NW. Tail visible using averted vision, coma enhances in Swan Band filter but tail does not enhance.
Comp Star= TYC 1587-696-1; Method= M; Cat= TJ
2011 Sep 14.37 UT; m1= 7.9; Dia= 10’; DC= 3; 7x50B
Observation made difficult with bright stars in proximity to comet, no tail, bright inner coma.
Comp Star= TYC 1588-1028-1; Method= S; Cat= TJ
2011 Sep 14.39 UT; m1= 8.4; Dia= 5’; DC= 5; 25cm L, f:5 (x39)
Tail 13’ in length in P.A. 160, slight faint elongation to NW.
Comp Star= TYC 1592-953-1; Method= M; Cat= TJ