En el día de la fecha se ha actualizado todas las Observaciones visuales, CCD y DSRL de las pasadas 5 semanas, debido a mi ausencia por viaje a España y Francia. Pido disculpas por este atraso en las publicaciones. Saludos, Luis Mansilla.
RECIENTES OBSERVACIONES VISUALES & CCD / RECENT COMET OBSERVATIONS
(actualizada al 17 de Julio de 2016 / Update 2016, July 17 – cometas.liada [AT] gmail.com)
C/2015 WZ (PanSTARRS)
2016 June 08.87 UT: m1=[11.4; 13-cm L (103x); Alexsandr Morozov (Novozybkov, Russia)
2016 June 07.99 UT: m1=12.3, Dia.=1.4′, DC=3; 31-cm C f/9 (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
2016 June 06.99 UT: m1=12.3, Dia.=1.5′, DC=3; 31-cm C f/9 (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
C/2014 W2 (PANSTARRS)
2016 July 10.88 UT: m1=14.6 CCD, Dia.=0.73′, DC=4/; 0.15-m L f/3.2 +CCD; Sergey Shurpakov (Baran’,Belarus)
2016 July 08.99 UT: m1=12.5, Dia.=2.0′, DC=4; 20-cm SCT (77x); Juan José González (Cueto Rosales, alt. 1420 m, León, España) [Estrellas de comparación de la fotometría APASS]
2016 July 05.87 UT: m1=14.7 CCD, Dia.=0.42′, DC=4/; 0.15-m L f/3.2 +CCD; Sergey Shurpakov (Baran’,Belarus)
2016 July 02.97 UT: m1=12.5, Dia.=2.0′, DC=5; 20-cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de comparación de la fotometría APASS]
2016 June 27.99 UT: m1=12.7, Dia.=1.5′, DC=6; 20-cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de comparación de la fotometría APASS cercana al cometa]
2016 June 25.95 UT: m1=14.7 CCD, Dia.=0.54′, DC=4/; 0.20-m L+CCD; Sergey Shurpakov (A98, Baran’,Belarus)
2016 June 25.83 UT: m1=14.1 CCD, Dia.=1.4′, DC=4; 20-cm L+CCD; Danil Sidorko (Korenovsk, Russia)
2016 June 23.89 UT: m1=14.8 CCD, Dia=0.39′, DC=4/; 0.20-m L+CCD; Sergey Shurpakov (A98, Baran’,Belarus)
2016 June 23.83 UT: m1=14.4 CCD, Dia.=1′, DC=4; 20-cm L+CCD; Danil Sidorko (Korenovsk, Russia)
2016 June 12.91 UT: m1=14.1 CCD, Dia.=0.57′, DC=7/; 15-cm L+CCD; Sergey Shurpakov (C36, Baran’,Belarus)
2016 June 07.98 UT: m1=12.4, Dia.=2′, DC=3/; 31-cm C f/9 (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
2016 June 06.98 UT: m1=12.4, Dia.=2′, DC=3/; 31-cm C f/9 (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
2016 June 03.83 UT: m1=13.5 CCD, Dia.=1′, DC=4; 20-cm L+CCD; Danil Sidorko (Korenovsk, Russia)
C/2014 S2 (PanSTARRS)
2016 July 08.93 UT: m1=10.7, Dia.=5′, DC=2/; 20-cm SCT (77x); Juan José González (Cueto Rosales, alt. 1420 m, León, España)
2016 July 02.95 UT: m1=10.7, Dia.=5′, DC=2; 20-cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2016 July 02.36 UT: m1=11.8, Dia.=3.1’, DC=2/; 25-cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, does not enhance in Swan Band filter. Outer coma semi-transparent, brightening to a slightly more opaque centre, circular in appearance. Slight interference from zodiacal light. No tail]
2016 June 27.94 UT: m1=10.7, Dia.=5′, DC=2/; 20-cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2016 June 12.87 UT: m1=14.4 CCD, Dia.=0.43′, DC=8; 15-cm L+CCD; Sergey Shurpakov (C36, Baran’,Belarus)
2016 June 09.81 UT: m1=13.8 CCD, Dia.=0.8′, DC=2, Tail= 2.5′ in RA: 70 deg.; 20-cm L +CCD; Danil Sidorko (Korenovsk, Russia)
2016 June 08.87 UT: m1=12.0, Dia=1′, DC=1; 30.5-cm L f/4.9 (93x); J. P. Navarro Pina (El Ardal, Mula, Murcia, Spain) [553 mts, Lm=5.8]
2016 June 08.35 UT: m1=11.6, Dia.=2.7’, DC=3; 25-cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight; Coma diffuse with slightly more opaque centre, no tail. Does not enhance in Swan Band filter]
2016 June 07.93 UT: m1=11.7, Dia.=2′, DC=3; 31-cm C (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
2016 June 06.93 UT: m1=11.5, Dia.=2′, DC=3; 31-cm C (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
2016 June 06.88 UT: m1=[11.0 NEGATIVE, Dia.=2.1′; 20×80 B; Marek Biely (Brno, Czech Republic) [Already not seen. Fainter than 11.0 mag. Slight interference of astronomical twilight]
C/2013 X1 (PanSTARRS)
2016 July 09.98 UT: m1=7.8, Dia.=3.5′, DC=3; 25-cm L F/4.5 (66x); A. Gonzalo Vargas B. (Cochabamba, Bolivia) [Se aprecia un ligero alargamiento o deformación de la coma en un ángulo AP que estimo entre 95 a 97 grados, seeing escala Antoniadi:2 ].
2016 July 05.03 UT: m1=7.3, Dia.=8′, DC=3; 10-cm R f/5 (25x); Willian Souza (Sao Paulo, Brazil)
2016 July 04.17 UT: m1=7.2, Dia.=12′, DC=3; 7×50 B; Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 04.05 UT: m1=7.2, Dia.=10′, DC=3; 10-cm R f/5 (25x); Willian Souza (Sao Paulo, Brazil)
2016 July 03.47 UT: m1=7.1:, Dia.=10.6’, DC=5/; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Magnitude uncertain; Coma in busy star field, difficult to extract reliable m1 value. Enhances well in Swan Band filter. Tail difficult to trace due to galactic plane]
2016 July 03.18 UT: m1=7.0, Dia.=10′, DC=3; 15×70 B; Willian Souza (Sao Paulo, Brazil)
2016 July 02.40 UT: m1=7.5, Dia.=17’, DC=5; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Semi-transparent outer coma gradually brightening to an almost stellar and opaque inner coma. Faint tail traced out to 22’in length in P.A. 072° where it is lost into the galactic plane. Coma enhances strongly in Swan Band filter]
2016 July 01.17 UT: m1=6.9, Dia.=15′, DC=3; 7×50 B; Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 01.01 UT: m1=6.8, Dia.=9′, DC=4; 25-cm L F/4.5 (66x); A. Gonzalo Vargas B. (Cochabamba, Bolivia) [Parte de la zona central de la coma concentrada sin llegar a apariencia estelar, alargamiento o deformación de la coma en 5´de arco en un ángulo AP que estimo entre 35 a 45 grados]
2016 June 29.47 UT: m1=7.2, Dia.=6.8’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma framed by bright stars to the N, E, S and NW. Faint tail visible 14’ in length approximately in P.A. 062°. Coma shows faint outer coma and brightening to opaque and moderately condensed centre]
2016 June 29.14 UT: m1=6.5, Dia.=16′, DC=3/; 7×50 B; Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 28.51 UT: m1=7.1, Dia.=16’, DC=4/; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma enhances strongly in Swan Band filter. Very tenuous but short tail visible 13’in length approximately in P.A. 060° and about 10’ in width where it leaves the coma. Outer coma diffuse and brightening to a moderately condensed centre. Pale aqua-blue in colour]
2016 June 28.02 UT: m1=6.4, Dia.=18′, DC=4; 7×50 B; Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 27.12 UT: m1=6.4, Dia.=18′, DC=4; 7×50 B; Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 25.41 UT: m1=6.6, Dia.=15.2’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with semi-opaque outer coma and brightening to a moderately condensed centre. Coma appears slightly elongated to ENE approximately. No tail visible in the 7×50 B’s but using 11×70 B’s there appears to be a faint tail approximately 12’ in length in P.A. 068°. Coma shows a 9th magnitude star within the coma 3.6’away in P.A. 270° from coma centre. Enhances strongly in Swan Band filter]
2016 June 24.97 UT: m1=6.2, Dia.=18′, DC=4; 7×50 B; Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 15.14 UT: m1=6.5, Dia.=15′, DC=4; 10×50 B; Willian Souza (Marilia, Brazil)
2016 June 14.17 UT: m1=6.5, Dia.=15′, DC=3; 15×70 B; Willian Souza (Sao Paulo, Brazil)
2016 June 14.15 UT: m1=6.4, Dia.=15′, DC=4; 7×50 B; Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Moonlight]
2016 June 09.20 UT: m1=6.4, Dia.=15′, DC=3/; 10-cm f/5 refractor (25x); Willian Souza (Sao Paulo, Brazil)
2016 June 09.16 UT: m1=6.5, Dia.=15′, DC=3; 15×70 B; Willian Souza (Sao Paulo, Brazil)
2016 June 08.49 UT: m1=6.7, Dia.=20’, DC=4; 7×50 B; Chris Wyatt (Walcha, NSW, Australia) [Enhances strongly in Swan band filter, no tail visible. Centre is moderately condensed and appears green/blue in colour, slightly elongated to NNW]
2016 June 07.05 UT: m1=[6.4 NEGATIVE, Dia.=3.0′; 20×80 B; Marek Biely (Brno, Czech Republic) [No chance in these altitudes. Fainter than 6.4 mag. Slight interference of astronomical twilight]
C/2011 KP36 (Spacewatch)
2016 July 09.11 UT: m1=13.3, Dia.=0.8′, DC=3; 20-cm SCT (133x); Juan José González (Cueto Rosales, alt. 1420 m, León, España) [Estrellas de comparación de la fotometría APASS. Cielo muy claro de montaña]
2016 July 02.72 UT: m1=13.9, Dia.=0.8’, DC=2; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma does not enhance in Swan Band filter. No tail, very diffuse with a very slight brightening to centre]
252P/LINEAR
2016 June 06.89 UT: m1=[10.7 NEGATIVE, Dia.=1.9′; 20×80 B; Marek Biely (Brno, Czech Republic) [It must have faded out very rapidly as there was no sign of comet in predicted position. Fainter than 10.7 mag. Slight interference of astronomical twilight]
237P/LINEAR
2016 July 03.46 UT: m1=13.7, Dia.=0.5’, DC=6; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma does not enhance in Swan Band filter. Outer coma diffuse brightening to an opaque inner coma with a stellar central condensation. Pale aqua-blue in colour, no tail evident although at x166 the coma appears a little elongated to the NE]
2016 July 02.93 UT: m1=13.1, Dia.=0.6′, DC=5; 20-cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de comparación de la fotometría APASS cercana al cometa]
2016 July 02.38 UT: m1=13.4, Dia.=0.5’, DC=6; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma shows a small stellar pseudo-nucleus surrounded by a tenuous, semi-transparent outer coma. Coma does not enhance in Swan Band filter. Close to mag 13.1 star, 0.9’away in P.A. 135° but easily resolvable from interference. Also visible at x39]
226P/Pigott-LINEAR-Kowalski
2016 July 02.75 UT: m1=[15.2 Negative; Dia=–; DC=–; 25-cm L f:5 (166x); Chris Wyatt (Walcha, NSW, Australia) [Comet not visible; Zodiacal light interference. Not visible at x83. Stellar limiting magnitude 15.2]
116P/Wild 4
2016 July 02.39 UT: m1=13.9, Dia.=1.3’, DC=2/; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse with slightly brighter inner coma. No tail]
2016 June 28.50 UT: m1=13.9, Dia.=0.7’, DC=2/; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse with slightly brighter and opaque centre. Close to mag 13.8 star]
2016 June 25.37 UT: m1=13.7, Dia.=0.8’, DC=3; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse and small, slight brightening to a weakly condensed centre. Visible in periods of good seeing]
2016 June 08.69 UT: m1=13.2, Dia.=1.2’, DC=2/; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse with slightly brighter but weakly condensed centre]
81P/Wild 2
2016 July 02.91 UT: m1=8.1, Dia.=9′, DC=2; 20-cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Crepúsculo astronómico. Muy baja altura sobre el horizonte : 6º. Estrellas de comparación a la misma altura que el cometa. Cielo muy claro de montaña]
2016 July 02.35 UT: m1=11.2, Dia.=2’, DC=3; 25-cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Inner coma enhances in Swan Band filter. Coma slightly elongated to the East. Outer coma diffuse, brightening to an opaque and moderately condensed centre, pale aqua-blue in colour. Slight interference by zodiacal light; Altitude = 19°. No tail]
2016 June 27.92 UT: m1=8.2, Dia.=8′, DC=2/; 20-cm SCT (77x); Juan José González ( Alto del Castro – Aralla, alt. 1720 m, León, España) [Crepúsculo astronómico. Muy baja altura sobre el horizonte : 6º. Estrellas de comparación a la misma altura que el cometa. Cielo muy claro de montaña]
77P/Longmore
2016 July 02.37 UT: m1=14.2, Dia.=0.7’, DC=2/; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slight brightening to centre. No tail. Visible in periods of good seeing]
2016 June 28.49 UT: m1=13.7, Dia.=0.8’, DC=2; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [No tail; Very diffuse. Visible in periods of good seeing]
2016 June 08.36 UT: m1=13.8, Dia.=1’, DC=2/; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Moonlight; Coma very diffuse with slight brightening to centre, difficult]
53P/Van Biesbroeck
2016 July 03.02 UT: m1=12.9, Dia.=0.9′, DC=3; 20-cm SCT (133x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España) [Estrellas de comparación de la fotometría APASS]
2016 July 02.51 UT: m1=13.4, Dia.=0.8’, DC=3; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Coma small and opaque with slightly brighter centre. No tail. Faintly visible at x39, does not enhance in Swan band filter]
2016 June 28.53 UT: m1=13.5, Dia.=0.8’, DC=3; 25-cm L f:5 (83x); Chris Wyatt (Walcha, NSW, Australia) [Does not enhance in Swan Band filter; Outer coma faint and brightening slightly to weakly condensed inner coma. No tail. Sky hazy although transparent, ground fog present]
2016 June 08.74 UT: m1=14.4, Dia.=0.6’, DC=3; 25-cm L f:5 (166x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse and weakly condensed; difficult to see except in periods of good seeing where it is easily viewed. No tail]
29P/Schwassmann-Wachmann 1
2016 July 02.51 UT: m1=[14.8 Negative, Dia.=–, DC=–; 25-cm L f:5 (166x); Chris Wyatt (Walcha, NSW, Australia) [Comet not visible at x166. Stellar limiting magnitude = 14.5 and fainter]
2016 June 28.52 UT: m1=[14.9 Negative, Dia.=–, DC=–; 25-cm L f:5 (166x); Chris Wyatt (Walcha, NSW, Australia) [Comet not visible, limiting magnitude 15.0 and fainter]
2016 June 08.72 UT: m1=14.2, Dia.=0.8’, DC=5/; 25-cm L f:5 (166x); Chris Wyatt (Walcha, NSW, Australia) [Coma appears diffuse. Close to 13th mag star 0.5’away in P.A. 235°; Semi-opaque outer coma condenses to an opaque pale aqua-blue coloured centre which appears moderately condensed but not quite stellar. Difficult to track in the dobsonian telescope near zenith at high magnification. Not visible at x83]
9P/Tempel
2016 July 08.92 UT: m1=10.8, Dia.=3′, DC=2; 20-cm SCT (77x); Juan José González (Cueto Rosales, alt. 1420 m, León, España)
2016 July 03.92 UT: m1=11.5, Dia.=2.5′, DC=3/; 22-cm L (60x); Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 July 02.92 UT: m1=10.8, Dia.=3.5′, DC=2/; 20-cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2016 July 02.39 UT: m1=12.5, Dia.=3’, DC=3/; 25-cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, semi-transparent edges with slight brightening to a moderately condensed and opaque centre. Does not enhance in Swan Band filter]
2016 June 28.48 UT: m1=12.3, Dia.=2.3’, DC=3; 25-cm L f:5 (39x); Chris Wyatt (Walcha, NSW, Australia) [No tail; Diffuse coma slightly brightening to a weakly condensed centre. Does not enhance in Swan Band filter]
2016 Jun. 27.93 UT: m1=10.9, Dia.=3′, DC=3; 20-cm SCT (77x); Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2016 June 09.80 UT: m1=13.7 CCD, Dia.=0.6′, DC=3; 20-cm L+CCD; Danil Sidorko (Korenovsk, Russia)
2016 June 09.02 UT: m1=11.6, Dia.=2.5′, DC=3; 22-cm L (160x); Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 June 07.92 UT: m1=11.4, Dia.=2.0′, DC=3; 31-cm C f/9 (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
2016 June 06.92 UT: m1=11.4, Dia.=2.0′, DC=3; 31-cm C f/9 (68x); Martin Lehky ((Hradec Kralove, Czech Republic)
Observación de Cometas @Rastreadores de Cometas 