C/2011 C1 (McNaught)

C/2011 C1 (McNaught)
2011 June 06.79 UT: m1=12.1, Dia.=2’, DC=1... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, nearby stars made observation difficult, no tail, slight interference by zodiacal light. Comp Star= ASAS-3 011659+1459.6. Method= S. Cat= AU]
2011 June 06.44 UT: m1=13.1, Dia.=1’, DC=6... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma is diffuse but shows stellar central condensation in periods of good seeing using averted vision, no tail, slight moonlight interference. Comp Star= ASAS-3 113223-8054.1. Method= M. Cat= AU]
2011 June 04.11 UT: m1=10.8, Dia.=2′, DC=3/... 20-cm SCT (100x)... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Crepúsculo astronómico. Altura sobre el horizonte: 12º]
2011 June 03.78 UT: m1=11.9, Dia.=2.5’, DC=2... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, slight hint of brightening to centre but not easily visible, enhances well with Swan band filter, slight interference by zodiacal light, averted vision worked best on this comet. Comp Star= ASAS-3 010947+1521.0. Method= S. Cat= AU]
2011 May  14.78 UT: m1=10.2, Dia.=3.5’, DC=3... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma is evenly illuminated with slightly brighter, broad central condensation. Comp Star= TYC 598-81-1. Method= S. Cait= TJ]
2011 May  10.77 UT: m1=10.1, Dia.=2.8’, DC=4... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma close to bright star, even brightness, diffuse with small noticeable smeared out central condensation. Comp Star= TYC 1174-698-1. Method= M. Cat= TJ]
2011 May  10.472 UT: m1=9.5, Dia=3´, DC=4, Tail=  not visible... 25-cm Reflector (48x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2011 May  06.35 UT: m1=9.5, Dia.=2′, DC=4... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 May  05.34 UT: m1=9.5, Dia.=2′, DC=4... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 May  04.78 UT... m1=9.6, Dia.= 5’, DC=3... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma large, diffuse with gradual brightening of central condensation. Comp Star= TYC 1172-1503-1. Method= M. Cat= TJ]
2011 May  04.35 UT: m1=9.6, Dia.=2′, DC=4... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 May  03.36 UT: m1=9.4, Dia.=2′, DC=5... 20×80 B... Alexandre Amorim (Florianopolis, Brazil)
2011 May  02.34 UT: m1=9.3, Dia.=2′, DC=5... 20×80 B... Alexandre Amorim (Florianopolis, Brazil)
2011 May  01.79 UT: m1=9.3, Dia.=3.5’, DC=3... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma has diffuse edges with slight brightening of central condensation, no tail. Comp Star= TYC 1162-32-1. Method= S. Cat= TJ]
2011 May  01.13 UT: m1=9.8, Dia.=4′, DC=3, no tail... 23.5-cm SCT (6x)... Carlos Labordena (Castellón, España)
2011 Apr. 30.78 UT: m1=9.1, Dia.= 4’, DC= 3... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma small and almost evenly diffuse with slight tightening of central condensation, no tail. Comp Star= TYC 1161-1575-1. Method= S. Cat= TJ]
2011 Apr. 30.35 UT: m1=9.5, Dia.=2′, DC=4... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 28.34 UT: m1=9.3, Dia.=3′, DC=4... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 27.34 UT: m1=9.4, Dia.=2′, DC=5... 20×80 B... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 26.34 UT: m1=9.3, Dia.=2.5´, DC=6... 20×80 B... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 24.88 UT: m1=8.8, Dia.=3.4´, DC=4... 21-cm Cassagrain... M.-T. Hui, Mt. Guizi, Wuchang, China) [twilight, moonlight and city lights... morning haze around horizon]
2011 Apr. 23.88 UT: m1=8.6, Dia.=4.7´, DC=5... 21-cm Cassagrain... M.-T. Hui (Mt. Guizi, Wuchang, China) [twilight, moonlight and city lights... slight haze]
2011 Apr. 18.87 UT: m1=8.8, Dia.=4′, DC=3... 21-cm Cassagrain... Man-To Hui (Mt. Guizi, Wuchang, China) [twilight... strong moonlight interference... city lights]
2011 Apr. 14.35 UT: m1=9.4, Dia.=3′, DC=6... 20×80 B... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 13.17 UT: m1=8.6, Dia.=6′, DC=3/... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [En 20 -cm SCT (77x): Tail=  0.3º en AP 280º]
2011 Apr. 12.75 UT: m1=9.5, Dia.=4, DC=3... 25×100 B... David A. J. Seargent (The Entrance, NSW, Australia)
2011 Apr. 12.344 UT: m1=9.3, Dia.=5′, DC=3... 20×100 B... Marco Goiato (Araçatuba, Brasil) [Nuvens]
2011 Apr. 11.33 UT: m1=9.5, Dia.=2′, DC=4... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 08.77 UT: m1=9.7, Dia.=6... 25×100 B... David A. J. Seargent (The Entrance, NSW, Australia) [Comet enhanced through Swan Band filter]
2011 Apr. 08.458 UT: m1=9.0, Dia.=8´, DC=5, Tail= not visible... 25-cm Reflector (48x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2011 Apr. 08.344 UT: m1=9.3, Dia.=5′, DC=3, 20x100B... Marco Goiato (Araçatuba, Brasil)
2011 Apr. 08.333 UT: m1=9.5, Dia.=4′, DC=4/, 22-cm L f:6.5 (60x)... Marco Goiato (Araçatuba, Brasil) [melhora significativa com o uso de filtro de cometa]
2011 Apr. 08.32 UT: m1=9.5, Dia.=2′, DC=5... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 06.33 UT: m1=9.6, Dia.=2′, DC=5, 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 05.19 UT: m1=8.7, Dia.=6′, DC=3/... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [En 20-cm SCT (77x): Tail=  0.2º en AP 280º]
2011 Apr. 05.33 UT: m1=9.6, Dia=4′, DC=3... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 04.33 UT: m1=9.5, Dia=2′, DC=5... 20×80 B... Alexandre Amorim (Florianopolis, Brazil)
2011 Apr. 03.33 UT: m1=9.5, Dia.=3′, DC=4... 18-cm L (57x)... Alexandre Amorim (Florianopolis, Brazil) [altitude 32 degrees]
2011 Apr. 02.464 UT: m1=9.5, Dia.=6´, DC=4, Tail= not visible... 25-cm Reflector (48x), Salvador Aguirre (Hermosillo, Sonora, Mexico)
2011 Apr. 01.19 UT: m1=9.1, Dia.=8′, DC=3, Tail= 0.2º en AP: 260º... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España)
2011 Apr. 01.15 UT: m1=10.2, Dia.=4′, DC=3, no tail... 23.5-cm SCT (67x)... Carlos Labordena (Castellón, España)
2011 Mar. 30.476 UT: m1=10.0, Dia=4´, DC=4, Tail= not visible... 25-cm Reflector (48x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2011 Mar. 28.89 UT: m1=10.1, Dia.=4′, DC=3... 21-cm Cassagrain... Man-To Hui (Mt. Guizi, Wuchang, China) [twilight... strong moonlight interference... city lights]
2011 Mar. 18.22 UT: m1=10.2, Dia.=4.5′, DC=3... 20-cm SCT (100x)... Juan José González (Collada de Olleros de Alba, alt. 1200 m, León, España) [Coma externa débil y difusa. Movimiento obvio, seguido durante 15 min. Estrellas de campo comprobadas en el DSS. Observación realizada en el crepúsculo astronómico, ocaso lunar]
2011 Mar. 16.47 UT: m1=11.0: CCD, Dia.=&3.8′... ... Artyom Novichonok [Large and very diffuse]
2011 Feb. 12.47 UT: m1=14.3: CCD, Dia.=&1.5′... 36-cm M + CCD... D. Chestnov & A. Novichonok (remotely Tzec Maun observatory, Mayhill, USA)
2011 Feb. 11.49 UT: m1=14.4: CCD, Dia.=1.7′... 21-cm R + CCD... T. Kryachko & S. Korotkiy & A. Novichonok (remotely Tzec Maun observatory, Mayhill, USA)
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