C/2009 R1 (McNaught]

C/2009 R1 (McNaught]
2010 July 04.87 UT: m1=[5.0... 25×100 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Cometa no observado. Cielo muy claro de montaña. Altura sobre el horizonte: 6º]
2010 June 27.13 UT: m1=5.2, Dia.=5′, DC=8, Tail= 20′... 11×80 B... Carlos Labordena (Castellón, España) [Fuerte interferencia de la luz de la luna y primeras luces del alba]
2010 June 24.12 UT: m1=4.9, Dia.=6′, DC=8, Tail= 80′... 11×80 B... Carlos Labordena (Castellón, España)
2010 June 22.11 UT: m1=5.2, Dia.=–, DC=9... Naked Eye... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [En 10x50B: m1=5.4, Dia.=4′, DC=8, Cola iónica: 2.1º en AP: 330º, cola de polvo 0.2º en AP: 295º. Cielo muy claro de montaña. Altura sobre el horizonte: 9º]
2010 June 20.11 UT: m1=5.0, Dia.=6′, DC=8, Tail= 70′... 11×80 B... Carlos Labordena (Castellón, España)
2010 June 18.10 UT: m1=5.5, Dia.=4′, DC=7/, Tail= 1.5º en PA: 320º... 10×50 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [Cielo muy claro de montaña. En 25x100B: corta cola de polvo de 0.2º en AP: 290º. Altura sobre el horizonte: 13º]
2010 June 17.11 UT: m1=4.9, Dia.=7′, DC=7, Tail= 90′... 11×80 B... Carlos Labordena (Castellón, España)
2010 June 16.87 UT: m1=7.9 CCD, Dia.=3.35′, DC=7/, Tail= 46′ in PA: 311deg ... Sergey Shurpakov (Baran’, Belarus)
2010 June 16.43 UT: m1=5.1 CCD... SBIG All-sky 340 camera... Artyom Novichonok (remotely Mayhill, USA)
2010 June 15.41 UT: m1=5.2 CCD... SBIG All-sky 340 camera... Artyom Novichonok (remotely Mayhill, USA)
2010 June 15.10 UT: m1=5.4, Dia.=3.5′, DC=7/, Tail= 2.2º en PA: 305º... 10×50 B... Juan José González (Alto de Carmona – Tábara, alt. 970 m., Zamora, España ) [El cometa muestra un menor diámetro de coma que en mi observación previa (7 de Junio), resultando una estimación de magnitud similar, m1=5.4. Cielo muy claro de montaña. En 25x100B: corta cola de polvo de 0.2º en AP: 270º. Altura sobre el horizonte: 15º ].
2010 June 14.94 UT: m1=5.6, Dia.=5′, DC=6... 15-cm L... Ilya Los (Saratov, Russia)
2010 June 14.93 UT: m1=5.5, Dia.=6′, DC=6... 15-cm L... Ilya Los (Saratov, Russia)
2010 June 14.42 UT: m1=5.5 CCD... SBIG All-sky 340 camera... Artyom Novichonok (remotely Mayhill, USA)
2010 June 14.11 UT: m1=4.8, Dia.=7′, DC=7, Cola=60′... 11×80 B... Carlos Labordena (Castellón, España)
2010 June 13.92 UT: m1=5.3, Dia.=7′, DC=6... 20-cm L... Alexander Manannikov (Ramenskoye, Russia)
2010 June 13.92 UT: m1=7.6 CCD, Dia.=4.0′, DC=7/, Tail= in PA: 305deg ... 15-cm L f/3.2 +CCD... Sergey Shurpakov (Baran’, Belarus)
2010 June 13.42 UT: m1=5.7 CCD... SBIG All-sky 340 camera... Artyom Novichonok (remotely Mayhill, USA)
2010 June 12.93 UT: m1=5.4, Dia.=6′, DC=5... 20-cm L... Alexander Manannikov (Ramenskoye, Russia)
2010 June 12.88 UT: m1=5.2, Dia.=3′, DC=8, Tail= 10′... 20-cm L... Vyacheslav Ivanov (Saratov, Russia)
2010 June 12.43 UT: m1=5.1 CCD... SBIG All-sky 340 camera... Artyom Novichonok (remotely Mayhill, USA)
2010 June 11.424 UT: m1=5.0, Dia.=4´, DC=6, Tail= visible... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 June 11.11 UT: m1=5.0, Dia.=7′, DC=7, Tail= 60′... 11×80 B... Carlos Labordena (Castellón, España)
2010 June 09.94 UT: m1=7.9 CCD, Dia.=4.0′, DC=7/, Tail= 30′ in PA: 292deg ... 15-cm L f/3.2 +CCD)... Sergey Shurpakov (Baran’, Belarus)
2010 June 08.94 UT: m1=8.0 CCD, Dia.=4′, DC=8, Tail= 38′ in PA: 287 deg ... 15-cm L f/3.2 +CCD)... Sergey Shurpakov (Baran’, Belarus)
2010 June 07.93 UT: m1=8.0 CCD, Dia.=6.2′, DC=8, Tail= 38′ in PA: 287 deg ... 15-cm L f/3.2 +CCD)... Sergey Shurpakov (Baran’, Belarus)
2010 June 07.375 UT: m1=5.8, Dia.=8′, DC=6... 7X50 B... Marco Goiato (Araçatuba, Brasil) [Luar, altitude do cometa: 10°, extinção atmosférica AP:licada, crepúsculo náutico]
2010 June 07.37 UT: m1=5.7*, Dia.=4′, DC=7... 20×80 B... Alexandre Amorim (Florianopolis, Brazil) [alt. 6 degrees]
2010 June 07.364 UT: m1=6.0, Dia.=7′, DC=6/, Tail= 0.5 degrees in PA: 290 deg ... 20X100B... Marco Goiato (Araçatuba, Brasil) [Luar, altitude do cometa: 9°, extinção atmosférica AP:licada, crepúsculo astronômico]
2010 June 07.08 UT: m1=6.7 CCD, Dia.=2.1′, DC=7... 25-cm L +CCD +Rc filter... Toni Scarmato (Calabria, Italia)
2010 June 07.05 UT: m1=5.4, Dia.=7′, DC=7... 10×50 B... Juan José González (El Portillo – Castrocontrigo, alt. 1047 m., León, España) [En 25x100B: Tail= 1.3º en AP: 280º. Obviamente más brillante que en la estimación previa de tres días atrás. Cometa próximo a la visibilidad a simple vista. Estimación realizada antes del orto lunar. Cielo claro de montaña. Altura sobre el horizonte: 10º]
2010 June 06.94 UT: m1=7.3 CCD, Dia.=3.8′, DC=7/, Tail= 40′ in PA: 284 deg ... 15-cm L f/3.2 +CCD)... Sergey Shurpakov (Baran’, Belarus)
2010 June 06.37 UT: m1=5.5, Dia.=7′, DC=7... 10×50 B... Alexandre Amorim (Florianopolis, Brazil) [alt. 7 degrees]
2010 June 06.364 UT: m1=6.3, Dia.=6′, DC=6/, Tail= 0.3 deg in PA: 280 deg ... 20X100 B... Marco Goiato (Araçatuba, Brasil) [Luar, altitude do cometa: 10°, extinção atmosférica AP:licada]
2010 June 05.93 UT: m1=5.6, Dia.=8′, DC=6... 20-cm L... Alexander Manannikov (Ramenskoye, Russia)
2010 June 04.12 UT: m1=6.7, Dia.=8′, DC=6, no tail... 11×80 B... Carlos Labordena (Castellón, España)
2010 June 04.04 UT: m1=6.4, Dia.=7′, DC=6... 25×100 B... Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m., León, España) [Alguna interferencia de la luz lunar. Altura sobre el horizontre: 7º]
2010 May  31.36 UT: m1=7.1, Dia.=4′, DC=6... 20×80 B... Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2010 May  27.36 UT: m1=7.3, Dia.=7′, DC=6... 20×80 B... Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2010 May  26.354 UT: m1=6.9, Dia.=7′, DC=5/, Tail= 0.3 deg in PA: 260 deg ... 20X100 B... Marco Goiato (Araçatuba, Brasil)
2010 May  26.354 UT: m1=6.8, Dia.=8′, DC=4... 7X50 B... Marco Goiato (Araçatuba, Brasil)
2010 May  23.354 UT: m1=7.8, Dia.=5′, DC=5... 20X100 B... Marco Goiato (Araçatuba, Brasil)
2010 May  23.12 UT: m1=7.9, Dia.=6′, DC=4, no tail... 11×80 B... Carlos Labordena (Castellón, España)
2010 May  22.354 UT: m1=7.7, Dia.=5′, DC=4... 7X50 B... Marco Goiato (Araçatuba, Brasil)
2010 May  22.343 UT: m1=7.9, Dia.=4′, DC=5/, Tail= 0.2 deg in PA: 240 deg ... 20X100 B... Marco Goiato (Araçatuba, Brasil)
2010 May  22.10 UT: m1=7.2, Dia.=9′, DC=6... 10×50 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m., León, España) [En 20-cm SCT (77x): Débil cola de 0.6º en  AP: 260º. Estrella de mag. 9.3 (Tycho-2) en la coma. Cielo muy claro de montaña. Altura: 18º ].
2009 May  19.79 UT: m1=7.5, Dia.=7.5′, DC=5/6... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [No tail, central condensation a little more pronounced. Comp Star= TYC 1180-226-1... Method= S... Cat= TJ]
2010 May  17.83 UT: m1=8.5, Dia.=5′, DC=5... 25×100 B... Michael Mattiazzo (Castlemaine, Victoria) [Tycho 2 VT comparison stars. Smoke haze interference. Comet altitude was 17 degrees. The moderately condensed coma is enhanced by a swan band comet filter. No tail observed]
2010 May  17.14 UT: m1=7.8, Dia.=8′, DC=5... 10×50 B... Juan José González (Cueto Rosales – Riello, alt. 1420 m., León, España) [En 20-cm SCT (77x): coma claramente destacada con filtro Swan. Más brillante que lo previsto. Cielo muy claro de montaña. Comienzo del crepúsculo astronomico. Altura sobre el horizonte: 18º]
2010 May  16.35 UT: m1=8.5, Dia.=5′, DC=5... 20×80 B... Alexandre Amorim (Florianopolis, Brazil)
2010 May  16.13 UT: m1=8.4, Dia.=7′, DC=4, no tail... 23.5-cm SCT (67x)... Carlos Labordena (Castellón, España)
2010 May  15.76 UT: m1=8.0, Dia.=9.5’, DC=4... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma has small central condensation, not quite stellar, coma large and faint, seen with direct vision. Comp Star= TYC 1182-516-1 Method= S. Cat= TJ]
2010 May  15.333 UT: m1=8.5, Dia.=6′, DC=5/... 22-cm L f:6.5 (60x)... Marco Goiato (Araçatuba, Brasil) [Nuvens]
2010 May  15.333 UT: m1=8.5, Dia.=6′, DC=5... 20x100 B... Marco Goiato (Araçatuba, Brasil) [Nuvens]
2010 May  14.79 UT: m1=8.6, Dia.=4′, DC=4... 25×100 B... David A. J. Seargent (Cowra, NSW, Australia) [May have been slightly brighter through Swan Band filter]
2010 May  14.77 UT: m1=8.5, Dia.=3’, DC=3... 7×50 B... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse, close to bright star, coma easily resolved with direct vision. Comp Star= TYC 1178-163-1 Method= S. Cat= TJ]
2010 May  14.333 UT: m1=9.1:, Dia.=5′, DC=5/... 22-cm L f:6.5 (60x)... Marco Goiato (Araçatuba, Brasil) [Nuvens]
2010 May  13.78 UT: m1=8.0, Dia.=5.1’, DC=4/5... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma bright, slightly elongated to WSW (seems broad at x83), faint outer coma edges gradually concentrating to centre, central condensation not quite stellar. Comp Star= TYC 1181-1080-1 Method= S. Cat= TJ]
2010 May  11.77 UT: m1=8.3, Dia.=5.1’, DC=5... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma bright, central condensation tight but not stellar, coma elongated to WSW. Comp Star= TYC 1722-1182-1. Method= S. Cat= TJ]
2010 May  10.76 UT: m1=9.1, Dia.=4.8’, DC=4/5... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma bright, central condensation not quite stellar, coma seems elongated NE to SW slightly, 12 degrees above horizon. At x83 coma seems to have a faint broad extension to the West. Comp Star= TYC 1177-1469-1. Method= S. Cat= TJ]
2010 May  06.78 UT: m1=9.6, Dia.=3.2’, DC=3/4... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, coma diffuse, gradual brightening toward centre, elongated slightly to North, moonlight affected. Comp Star= TYC 1173-702-1 Method= S. Cat= TJ]
2010 May  06.470 UT: m1=10.0, Dia.=2´, DC=3/4, Tail= not visible... 15-cm SCT (37x)... Salvador Aguirre (Hermosillo, Sonora, Mexico)
2010 May  01.77 UT: m1=10.9, Dia.=1.5′, DC=4... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2010 Apr. 25.333 UT: m1=10.0, Dia.=2.5′, DC=4... 22-cm L f:6.5 (60x)... Marco Goiato (Araçatuba, Brasil)
2010 Apr. 22.76 UT: m1=9.9, Dia.=1.3’, DC=2/3... 25-cm L f:5 (x39)... Chris Wyatt (Walcha, NSW, Australia) [Diffuse coma with even surface brightness, slight brightening toward centre, AP:pears elongated WSW to ESE and elongation visible in periods of good seeing using averted vision, comet was 10 degrees above horizon. Comp Star= TYC 580-159-1... Method= S... Cat= TJ]
2010 Apr. 21.354 UT: m1=10.1, Dia.=2.5′, DC=4... 22-cm L f:6.5 (60x)... Marco Goiato (Araçatuba, Brasil)
2010 Apr. 20.76 UT: m1=10.1, Dia.=5.5’, DC=3... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Diffuse coma, no tail, zodiacal light interference. Coma slightly elongated to NW, 12 degrees above horizon. Comp Star= TYC 580-59-1 Method= S. Cat= TJ]
2010 Apr. 18.40 UT: m1=10.2: ... 11×70 B... Alexandre Amorim (San Rafael, Argentina) [zodiacal light]
2010 Apr. 18.354 UT: m1=10.2, Dia.=2′, DC=4... 22-cm L f:6.5 (160x)... Marco Goiato (Araçatuba, Brasil) [Crepúsculo náutico]
2010 Apr. 17.354 UT: m1=10.2:, Dia.=2′, DC=4... 22-cm L f:6.5 (160x)... Marco Goiato (Araçatuba, Brasil) [Crepúsculo náutico]
2010 Apr. 13.77 UT: m1=11.6, Dia.= 2.5’, DC=3/4... 25-cm L f:5 (x83)... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, no tail, zodiacal light interference, low on horizon. Comp Star= GSC-0569-1084 Method= S. Cat= HS]
2010 Apr. 12.35 UT: m1=10.5:... 18-cm L (45x)... Alexandre Amorim (Florianopolis, Brazil) [alt. 23 degrees]
2010 Apr. 11.343 UT: m1=10.7:, Dia.=1.5′, DC=4/... 22-cm L f:6.5 (160x)... Marco Goiato (Araçatuba, Brasil) [Luar]
2010 Apr. 10.20 UT: m1=10.2, Dia.=1.5′, DC=5/... 20-cm SCT (100x)... Juan José González (Cueto Rosales – Riello, alt. 1420 m., León, España) [Más brillante que lo previsto. Cielo muy claro de montaña. Crepúsculo astronómico. Altura sobre el horizonte: 8º]