Recientes observaciones cometarias

C/2012 K5 (LINEAR)
2013 Jan. 17.48 UT: m1=11.2, Dia.=2.2’, DC=5/6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma edges diffuse and tenuous with faint broad tail to NE, 7’ in length, very transparent. Inner come slightly brighter but very small, stellar central condensation faint. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Jan. 17.09 UT: m1=11.0 C ccd, Dia.=2.5′, Tail=0.4 deg in PA 35 deg.; 11cm R + CCD; Artyom Novichonok (remotely from Mayhill, U.S.A.)
2013 Ene. 12.07 UT: m1=9.8, Dia.=1´,DC=2/3; 25cm f/4.5 (66x); Gonzalo Vargas (Cochabamba, Bolivia)

C/2012 F6 (Lemmon)
2013 Jan. 19.14 UT: m1=6.8 (S), Dia.=12′, DC=4; Tail:0.5 degrees in PA:310°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 18.28 UT: m1=7.3, Dia.=7′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil)
2013 Jan. 18.12 UT: m1=6.9 (S), Dia.=12′, DC=4, Tail:0.5 degrees in PA:310°; 7×50 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 18.09 UT: m1=7.3, Dia.=5′, DC=4; 10cm R (50x); Willian Souza (Sao Paulo, Brazil)
2013 Jan. 17.68 UT: m1=6.9, Dia.=14’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges with slightly brighter inner coma and gradually condensing to centre as a broad patch of light, no tail. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Jan. 17.28 UT: m1=7.4, Dia.=7′, DC=5; 10×50 B; Alexandre Amorim (Florianopolis, Brazil) [clouds interferente]
2013 Jan. 16.71 UT: m1=7.6, Dia.=9.5’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma has a slight elongation to NW, no tail, twilight interference, thin haze in the air but not in the comets vicinity. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Jan. 16.50 UT: m1=7.1, Dia.=8′, DC=4; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria)

C/2011 L4 (PANSTARRS)
2013 Jan. 18.31 UT: m1=7.4 (M), Dia.=5′, DC=5, Tail:10 arcmin in PA:260°; 20×100 B; Marco Goiato (Araçatuba, Brasil)
2013 Jan. 18.30 UT: m1=8.0, Dia.=3′, DC=6/; 7cm R (28x); Alexandre Amorim (Florianopolis, Brazil) [altitude 17 deg, sun altitude -13 deg]
2013 Jan. 17.72 UT: m1=7.7, Dia.=6.3’, DC=6; 11×70 B; Chris Wyatt (Walcha, NSW, Australia) [Outer coma appears diffuse, elongated slightly to th West, small stellar central condensation. Observed in 7×50 B’s as a faint patch of light with averted vision in good seeing. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Jan. 17.72 UT: m1=7.8, Dia.=2.1’, DC=6; 25cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Swan band filter enhances inner coma and central condensation slightly but not the extremity of the tail. Coma appears as a bright stellar central condensation with bright but diffused inner coma sweeping back, narrow and tapering in brightness with faint and diffuse tail extremity which fans out slightly. Tail length 5.8′ in length to WNW. Comparison stars checked using Tycho-2 data in Guide 9.0; Method=M; Cat=TK]
2013 Jan. 16.73 UT: m1=7.9, Dia.=2′, DC=7; 25×100 B; Michael Mattiazzo (Castlemaine, Victoria) [well condensed with a short dust tail in PA 280. Globular cluster NGC 6541 in same field of view appeared significantly brighter]

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