C/2014 S2 (PANSTARRS)

C/2014 S2 (PANSTARRS)
Reported observations:
2016 July 28.36 UT: m1=13.8, Dia.=0.9’, DC=2... 25cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma very small and diffuse, difficult due to seeing conditions. No tail, zodiacal light interference]
2016 July 25.36 UT: m1=13.9, Dia.=0.7’, DC=2... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [No tail, difficult due to seeing conditions, slightly breezy. Coma very diffuse. Bright star just out of field]
2016 July 23.37 UT: m1=12.9, Dia.=1.8’, DC=2/... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, brightening to weakly condensed centre. Very windy conditions]
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 July 01.91 UT: m1=11.3, Dia.=3′, DC=3, no tail... 20-cm SCT (80x)... Carlos Labordena (Castellón, España)
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]
2016 June 06.83 UT: m1=11.0, Dia.=3.5′, DC=3... 25.5-cm L (120x)... Danil Sidorko (Korenovsk, Russia)
2016 June 05.81 UT: m1=10.9, Dia.=4′, DC=3... 25.5-cm L (120x)... Danil Sidorko (Korenovsk, Russia)
2016 June 04.95 UT: m1=10.8, Dia.=3′, DC=3, no tail... 20-cm SCT (80x)... Carlos Labordena (Castellón, España)
2016 June 03.86 UT: m1=10.5 DSRL, Dia.=3′... 1100d+300mm lens... Giuseppe Pappa (Mascalucia, Sicily, Italy)
2016 June 03.85 UT: m1=10.8, Dia.=4′, DC=2... 30.5-cm L (93x)... J. P. Navarro Pina (Mula, Murcia, Spain)
2016 June 03.49 UT: m1=11.8, Dia.=2.3′, DC=4... 40.0-cm L f/4.5 (75x)... Seiichi Yoshida (Gunma, Japan)
2016 June 01.01 UT: m1=10.4, Dia.=5′, DC=3... 20-cm SCT (77x)... Juan José González ( Alto del Castro – Aralla, alt. 1720 m, León, España)
2016 May  30.35 UT: m1=11.3, Dia.=3’, DC=3/... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Coma elongated to the East, inner coma opaque surrounded by a semi-transparent outer coma. Does not enhance in Swan Band filter]
2016 May  29.89 UT: m1=10.5, Dia.=3′, DC=3, no tail... 20-cm SCT (80x)... Carlos Labordena (Castellón, España)
2016 May  27.92 UT: m1=11.5, Dia.=2.2′, DC=3: 31-cm C (68x)... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 May  26.96 UT: m1=11.4, Dia.=2.2′, DC=3: 31-cm C (68x)... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 May  26.88 UT: m1=11.5 CCD, Dia.=5.8′, DC=5/... 0.02-m R f/2.5... Sergey Shurpakov (Baran’, Belarus)
2016 May  25.89 UT: m1=11.4 CCD, Dia.=9.4′, DC=4/... 0.02-m R f/2.5... Sergey Shurpakov (Baran’, Belarus)
2016 May  24.93 UT: m1=11.4, Dia.=2′, DC=3: 31-cm C (68x)... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 May  15.10 UT: m1=10.2, Dia.=5′, DC=3/... 20-cm SCT (77x)... Juan José González (Cueto Rosales, alt. 1420 m, León, España)
2016 May  15.06 UT: m1=10.5, Dia.=3′, DC=3, no tail... 15-cm T(45x)... Carlos Labordena (Castellón, España)
2016 May  12.876 UT: m1=12.9 CCD, Dia.=0.70′, DC=7, Tail= 1,4′ in PA: 104 deg.... 15-cm L+CCD... Sergey Shurpakov (Baran’, Belarus)
2016 May  09.95 UT: m1=10.2, Dia.=3.4′, DC=4... 20×80 B... Marek Biely (Brno, Czech Republic)
2016 May  09.95 UT: m1=13.0 CCD, Dia.=0.48′, DC=8... 15-cm L+CCD... Sergey Shurpakov (Baran’, Belarus, A98)
2016 May  08.92 UT: m1=10.6, Dia.=5.5′, DC=3... 13-cm L (65x)... Alexsandr Morozov (Novozybkov, Russia)
2016 May  08.90 UT: m1=13.5 CCD, Dia.=0.51′, DC=8... 0.20-m L+CCD... Sergey Shurpakov, Baran’, Belarus, A98)
2016 May  08.88 UT: m1=10.0, Dia.=3.7′, DC=3/... 20×80 B... Marek Biely (Brno, Czech Republic)
2016 May  08.79 UT: m1=11, Dia.=2.5′, DC=3... 25.5-cm L (120x)... Danil Sidorko (Korenovsk, Russia)
2016 May  08.02 UT: m1=10.4, Dia.=&3′, DC=1... 20-cm L (80x)... Alex Scholten (Eerbeek, Netherlands)
2016 May  07.90 UT: m1=9.9, Dia.=3.5′, DC=4... 20×80 B... Marek Biely (Brno, Czech Republic) [Maybe a slight hint of tail visible.]
2016 May  07.86 UT: m1=10.3, Dia.=6′.4, DC=6, Tail= 0.24 deg in PA: 100 deg.... 35-cm L (62x)... Jakub Cerny (Senohraby, Czech Republic)
2016 May  06.93 UT: m1=10.1, Dia.=3.1′, DC=4... 20×80 B... Marek Biely (Brno, Czech Republic)
2016 May  06.85 UT: m1=10.4, Dia.=5′, DC=4/... 20×100 B... Roberto Haver (Monte Amiata 1465m, Siena, Italy)
2016 May  05.00 UT: m1=10.5, Dia.=&4′, DC=1... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 May  04.49 UT: m1=10.0, Dia.=6′, DC=5... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2016 May  03.94 UT: m1=10.5, Dia.=6′, DC=3/... 13-cm L (26x)... Alexsandr Morozov (Novozybkov, Russia)
2016 May  03.81 UT: m1=11.4 CCD, Dia.=0.4′, DC=4, Tail= 1.7′ in PA: 122 deg.... 20-cm L+CCD... Danil Sidorko (Korenovsk, Russia)
2016 May  02.84 UT: m1=10.6, Dia.=5′, DC=6... 30.5-cm L f/4.9 (93x)... J. P. Navarro Pina (Mula, Murcia, Spain)
2016 May  02.78 UT: m1=10.7, Dia.=2.5′, DC=4... 25.5-cm L (120x)... Danil Sidorko (Korenovsk, Russia)
2016 May  02.47 UT: m1=10.2, Dia.=6′, DC=6... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2016 May. 02.30 UT: m1=10.2, Dia.=2′, DC=3... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 May  02.02 UT: m1=10.2, Dia.=&5, DC=1... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 May  01.81 UT: m1=11.9 CCD, Dia.=0.3′, DC=2, Tail= 1.2′ in RA: 127... 20-cm L+CCD... Danil Sidorko (Korenovsk, Russia)
2016 May  01.77 UT: m1=10.6, Dia.=2.4′, DC=4... 25.5-cm L (70.6x)... Danil Sidorko (Korenovsk, Russia)
2016 May  01.47 UT: m1=10.3, Dia.=5.0′, DC=7... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2016 May  01.09 UT: m1=10.1, Dia.=5′, DC=4... 20-cm SCT (77x)... Juan José González (Cueto Rosales, alt. 1420 m, León, España)
2016 Apr. 30.994 UT: m1=10.2, Dia.=3′, DC=4... 20-cm SCT (50x)... Carlos Labordena (Desert de les Palmes, Castellón, España)
2016 Apr. 30.99 UT: m1=10.3, Dia.=3′, DC=4... 22-cm L (120x)... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2016 Apr. 29.86 UT: m1=10.1, Dia.=2.5′, DC=4... 20×80 B... Marek Biely (Brno, Czech Republic) [Difficult to see it but easy to find it thanks to the constellation of Ursa Major]
2016 Apr. 29.77 UT: m1=10.6, Dia.=2.3′, DC=4... 25.5-cm L (120x)... Danil Sidorko (Korenovsk, Russia)
2016 Apr. 28.88 UT: m1=10.3, Dia.=&4, DC=1... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Apr. 28.88 UT: m1=12.0 CCD, Dia.=0.88′, DC=6/... 15-cm L+CCD... Sergey Shurpakov (Baran’, Belarus)
2016 Apr. 28.84 UT: m1=10.4, Dia.=7′, DC=3/... 13-cm L (26x)... Alexsandr Morozov (Novozybkov, Russia)
2016 Apr. 28.77 UT: m1=10.5, Dia.=2′, DC=4... 25.5-cm L (120x)... Danil Sidorko (Korenovsk, Russia)
2016 Apr. 26.86 UT: m1=10.5, Dia.=2.5′, DC=6... 30.5-cm L f/4.9 (94x)... J. P. Navarro Pina (Mula, Murcia, Spain)
2016 Apr. 23.85 UT: m1=12.0 CCD, Dia.=0.71′, DC=7, Tail=2.9′ in PA:133... 15-cm L+CCD... Sergey Shurpakov (Baran’, Belarus)
2016 Apr. 16.89 UT: m1=12.3 CCD, Dia.=0.52′, DC=7/... 15-cm L+CCD... Sergey Shurpakov (Baran’, Belarus)
2016 Apr. 15.90 UT: m1=12.0 CCD, Dia.=0.84′, DC=7/... 15-cm L+CCD... Sergey Shurpakov (Baran’, Belarus)
2016 Apr. 15.70 UT: m1=10.0, Dia.=5.5′, DC=6... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Ibaraki, Japan)
2016 Apr. 14.48 UT: m1=9.6, Dia.=2′, DC=3... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Apr. 11.75 UT: m1=10.2, Dia.=1.9′, DC=3... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Apr. 11.10 UT: m1=9.6, Dia.=4, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Apr. 09.51 UT: m1=9.9, Dia.=5.5′, DC=6... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Ibaraki, Japan)
2016 Apr. 09.11 UT: m1=9.7, Dia.=4, DC=7... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Apr. 08.64 UT: m1=9.9, Dia.=4.5′, DC=6... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Ibaraki, Japan)
2016 Apr. 07.99 UT: m1=9.6, Dia.=4′, DC=5... 13-cm L (26x)... Alexsandr Morozov (Novozybkov, Russia)
2016 Apr. 07.87 UT: m1=9.6, Dia.=2′, DC=3, Tail= 5′... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Apr. 07.77 UT: m1=10.1, Dia.=2′, DC=3/... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Apr. 07.11 UT: m1=9.5, Dia.=5... DC=7... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Apr. 06.90 UT: m1=9.5, Dia.=5′, DC=4/... 20-cm SCT (77x)... Juan José González ( Alto de la Camperona, alt. 1603 m, León, España ).
2016 Apr. 06.863 UT: m1=9.5, Dia.=3′, DC=3... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2016 Apr. 05.91 UT: m1=9.5, Dia.=5, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Apr. 05.91 UT: m1=9.5, Dia.=3′, DC=3... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2016 Apr. 04.88 UT: m1=10.0, Dia.=3.5′, DC=3... 25×100 B... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 Apr. 04.02 UT: m1=10.1, Dia.=3′, DC=3... 25×100 B... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 Apr. 03.15 UT: m1=9.4, Dia.=2′, DC=4... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Apr. 03.02 UT: m1=10.1, Dia.=3′, DC=3... 25×100 B... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 Apr. 02.01 UT: m1=9.8, Dia.=3.5′, DC=3... 25×100 B... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 Apr. 01.86 UT: m1=9.6, Dia.=2.3′, DC=3... 20×80 B... Marek Biely (Brno, Czech Republic) [Brighter than expected]
2016 Apr. 01.75 UT: m1=10.1, Dia.=2.1′, DC=3... 8-cm L (38.5x)... Danil Sidorko (Korenovsk, Russia)
2016 Mar. 30.82 UT: m1=9.7, Dia.=2.5′, DC=4... 60.3-cm L (76x)... Sandor Szabo (Sopron, Hungary)
2016 Mar. 29.85 UT: m1=9.3, Dia.=~5, DC=4/... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Mar. 27.90 UT: m1=9.8, Dia= 5′, DC=5... 30-cm L(107X)... Valentín Díaz (Aspe, Alicante, España)
2016 Mar. 27.79 UT: m1=9.7, Dia.=2′, DC=3/... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Mar. 22.48 UT: m1=9.1, Dia.=2.5′, DC=5... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Ibaraki, Japan)
2016 Mar. 20.81 UT: m1=9.8 DSLR, Dia.=3′... 1100d+300mm lens... Giuseppe Pappa (Sicily, Italy)
2016 Mar. 16.91 UT: m1=9.4, Dia.=~3′, DC=6/... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)(moonlight)
2016 Mar. 14.16 UT: m1=9.3, Dia.=4′, DC=3... 25×100 B... Martin Lehky ((Hradec Kralove, Czech Republic)
2016 Mar. 13.74 UT: m1=9.5, Dia.=2.8′, DC=3... 25.5-cm L (70.6x)... Danil Sidorko (Korenovsk, Russia)
2016 Mar. 12.96 UT: m1=9.3, Dia.=~6, DC=5... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Mar. 11.97 UT: m1=9.4, Dia.=4′, DC=6... 25-cm L (73x)... Valentín Díaz (La Romaneta, Alicante, España)
2016 Mar. 11.95 UT: m1=9.2, Dia.=6, DC=5... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Mar. 11.88 UT: m1=9.2, Dia.=3′, DC=5, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Mar. 11.85 UT: m1=9.3, Dia.=5′, DC=4/... 20-cm SCT (77x)... Juan José González (Pandorado, alt. 1190 m, León, España)
2016 Mar. 10.85 UT: m1=9.1, Dia.=3′, DC=4... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2016 Mar. 10.13 UT: m1=9.2, Dia.=4′, DC=5... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Mar. 09.89 UT: m1=9.6, Dia.=2.5′, DC=6... 30.5-cm L f/4.9 (47x)... J. P. Navarro Pina (El Ardal Mula, Murcia, Spain)
2016 Mar. 09.30 UT: m1=9.1, Dia.=4′, DC=5... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Mar. 08.74 UT: m1=9.3, Dia.=3′, DC=4... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Mar. 07.86 UT: m1=9.4, Dia.=4.5′, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Mar. 07.854 UT: m1=9.0,Dia=3′, DC=3... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2016 Mar. 07.73 UT: m1=9.3, Dia.=2.7′, DC=3... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Mar. 05.94 UT: m1=9.2, Dia.=3.5′, DC=5... 20-cm SCT (77x... Juan José González (El Chano – Riofrío, alt. 990 m, León, España)
2016 Mar. 05.94 UT: m1=9.2, Dia.=4′, DC=5/... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Mar. 03.85 UT: m1=9.1, Dia.=3′, DC=5... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Mar. 03.83 UT: m1=9.1, Dia.=3.5′, DC=5/... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Mar. 03.83 UT: m1=9.3, Dia.=3′, DC=1... 30.5-cm L f/4,9 (97x)... J. P. Navarro Pina (El Ardal Mula, Murcia, Spain)
2016 Mar. 03.78 UT: m1=9.4, Dia.=3′, DC=4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2016 Mar. 01.01 UT: m1=9.2, Dia.=3.5′, DC=5... 20-cm SCT (77x)... Juan José González (Pandorado, alt. 1190 m, León, España)
2016 Feb. 29.93 UT: m1=9.4, Dia.=4′, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Feb. 27.82 UT: m1=9.4, Dia.=4, DC=5... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Feb. 27.76 UT: m1=9.3, Dia.=3′, DC=4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2016 Feb. 12.93 UT: m1=8.5, Dia.=8′, DC=2... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2016 Feb. 12.80 UT: m1=9.2, Dia.=2.5′, DC=4/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2016 Feb. 09.97 UT: m1=8.6, Dia.=6′, DC=5... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2016 Feb. 09.70 UT: m1=9.4, Dia.=2.2′, DC=3/... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Feb. 08.77 UT: m1=9.1, Dia.=4′, DC=4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2016 Feb. 08.72 UT: m1=9.3, Dia.=2.1′, DC=4... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Feb. 08.21 UT: m1=9.8, Dia.=4′, DC=4... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Feb. 07.08 UT: m1=8.9, Dia.=4.5′, DC=4... 25×100 B... Martin Lehky (Czech Republic)
2016 Feb. 06.75 UT: m1=9.1, Dia.=3′, DC=5... 20×80 B... Maik Meyer (Limburg, Germany)
2016 Feb. 04.79 UT: m1=9.8, Dia.=3′, DC=3... 15-cm T f/5 (30x)... Carlos Labordena (Castellón, España)
2016 Feb. 03.84 UT: m1=9.2, Dia.=4′, DC=5/... 25×100 B... Juan José González (Alto de la Garandilla – Escuredo, alt. 1150 m, León, España)
2016 Feb. 01.91UT: m1=9.5 DSLR, Dia.=2′... 1100d+300mm lens... Giuseppe Pappa (Sicily, Italy)
2016 Jan. 30.78 UT: m1=9.7, Dia.=3′, DC=4... 15-cm T f/5 (30x)... Carlos Labordena (Castellón, España)
2016 Jan. 29.91 UT: m1=9.0, Dia.=4′, DC=4... 25×100 B... Martin Lehky (Czech Republic)
2016 Jan. 28.80 UT: m1=9.0, Dia.=~6′, DC=4... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 28.79 UT: m1=9.3, Dia.=~3′, DC=8... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 25.75 UT: m1=9.1, Dia.=2.5′, DC=4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2016 Jan. 23.20 UT: m1=9.6, Dia.=2.9′, DC=3/, 20×80 B... Marek Biely (Brno, Czech Republic) [Better visible in the morning sky now.]
2016 Jan. 18.44 UT: m1=9.1, Dia.=4′, DC=5... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Jan. 18.23 UT: m1=9.0, Dia.=7′, DC=7... 15×80 B... Alex Scholten (Bussloo, Netherlands)
2016 Jan. 18.23 UT: m1=9.1, Dia.=5′, DC=3... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 17.09 UT: m1=9.4, Dia.=4′, DC=3... 11×80 B... Carlos Labordena (Castellón, España)
2016 Jan. 17.08 UT: m1=9.6, Dia.=4′, DC=4... 15-cm T f/5 (30x)... Carlos Labordena (Castellón, España)
2016 Jan. 15.94 UT: m1=8.9, Dia.=~9′, DC=2... 15×80 B... Alex Scholten (Bussloo, Netherlands)
2016 Jan. 14.76 UT: m1=9.5, Dia.=3.0′, DC=3... 20×80 B... Marek Biely (Brno, Czech Republic) [It appears a bit fainter now]
2016 Jan. 09.81 UT: m1=10.0, Dia.=2.5′, DC=7... 40.0-cm L f/4.5 (75x)... Seiichi Yoshida (Ibaraki, Japan)
2016 Jan. 09.78 UT: m1=9.4, Dia.=4′, DC=3... 15.0-cm SCT (30x)... Carlos Labordena (Castellón, España)
2016 Jan. 08.95 UT: m1=8.9, Dia.=5′, DC=5... 25×100 B... Juan José González (Sierra de Abredo – Coaña, alt. 450 m, Asturias, España) [Cometa próximo a estrella de mag. 6.9 (Tycho-2). Altura sobre el horizonte: 16º]
2016 Jan. 08.76 UT: m1=9.1, Dia.=~6′, DC=6... 15×80 B... Alex Scholten (Bussloo, Netherlands)(comet close to star)
2016 Jan. 08.73 UT: m1=9.0, Dia.=3′, DC=5... 15.2-cm R f/5 (38x)... Maik Mayer (Limburg, Germany)
2016 Jan. 08.23 UT: m1=9.1, Dia.=6′, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 08.23 UT: m1=9.1, Dia.=~6′, DC=7... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2016 Jan. 05.78 UT: m1=9.6, Dia.=3′, DC=3... 11×80 B... Carlos Labordena (Castellón, España)
2016 Jan. 05.78 UT: m1=9.7, Dia.=3′, DC=3... 20.0-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Jan. 04.833 UT: m1=9.4, Dia.=3′, DC=3... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2016 Jan. 03.72 UT: m1=9.5, Dia.=2′, DC=3/... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2016 Jan. 02.80 UT: m1=9.5, Dia.=3′, DC=3... 30,5-cm L f/4.9 (47x)... J. P. Navarro Pina (El Ardal Mula, Murcia, Spain)
2016 Jan. 02.11 UT: m1=9.0, Dia.=3, DC=3... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Dec. 31.71 UT: m1=9.0, Dia.=4′, DC=5/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 30.89 UT: m1=9.7, Dia.=3′, DC=3... 30,5-cm F/4,9 (93x)... J. P. Navarro Pina (Sierra del Carrascalejo 590 mts., Murcia, Spain)
2015 Dec. 30.81 UT: m1=8.9, Dia.=2.5′, DC=7, Tail= 0.05 deg. PA: 350 deg ... 32-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Dec. 30.81 UT: m1=9.2, Dia.=3.8′, DC=4... 20×80 B... Marek Biely (Brno, Czech Republic) [Looks very similar to C/2013 X1]
2015 Dec. 30.73 UT: m1=9.5, Dia.=4′, DC=3... 25×100 B... Martin Lehky (Czech Republic)
2015 Dec. 30.24 UT: m1=9.0, Dia.=4′, DC=5... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands) (moonlight)
2015 Dec. 29.81 UT: m1=9.6, Dia.=3′, DC=3... 20.0-cm SCT (50x)... Carlos Labordena (Castellón, España)
2015 Dec. 29.79 UT: m1=8.8, Dia.=4′, DC=5... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Dec. 29.73 UT: m1=9.0 DSLR, Dia.=3′... canon 1100d+300mm lens... Giuseppe Pappa (Mascalucia, Sicily, Italy)
2015 Dec. 28.22 UT: m1=8.8, Dia.=4′, DC=1... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands) (moonlight)
2015 Dec. 27.70 UT: m1=9.1, Dia.=4.5′, DC=5... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 26.71 UT: m1=9.3, Dia.=4′, DC=d5/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany) [disk-like center surrounded by faint outer halo]
2015 Dec. 21.72 UT: m1=9.6, Dia.=1.6′, DC=3... 10.5-cm R f/6 (43x)... Uwe Pilz (Leipzig, Germany)
2015 Dec. 21.53 UT: m1=8.4, Dia.=5, DC=4... 10×50 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Dec. 21.23 UT: m1=8.4, Dia.=6′, DC=5... 10×50 B... Juan José González (Alto del Castro – Aralla, alt. 1720 m, León, España)
2015 Dec. 20.22 UT: m1=9.5, Dia.=2.7′, DC=6... 25-cm N (38x)... Valentín Díaz (Barranc del Leon, Alicante, España)
2015 Dec. 16.792 UT: m1=8.6, Dia.=4′, DC=4... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Dec. 13.83 UT: m1=9.0, Dia.=4′, DC=5... 20-cm N (52x)... Valentín Díaz (La Romaneta, Alicante, España)
2015 Dec. 13.80 UT: m1=9.4, Dia.=4′, DC=4, Tail= 15 arcmin ... 15.0-cm SCT (30x)... Carlos Labordena (Castellón, España)
2015 Dec. 13.41 UT: m1=8.6, Dia.=5′, DC=4... 20×80 B... Man-To Hui (Joshua Tree National Park, CA, USA)
2015 Dec. 11.78 UT: m1=8.3, Dia.=6′, DC=4... 10×50 B... Juan José González (Los Veneros – Sierra del Aramo, alt. 1340 m, Asturias, España) [En 25×100 B: m1=8.5... Cola: 0.3º en ap 20º]
2015 Dec. 11.75 UT: m1=8.7, Dia.=3′, DC=3... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England) [Coma elongated in PA 66 deg.]
2015 Dec. 09.797 UT: m1=8.6, Dia.=3′, DC=3... 11.4-cm f/8 (45x)... Neil Norman (Ipswich, England) [Observed comet at its exact q date and time, a first for me. Coma elongated in PA: 66 deg.].
2015 Dec. 09.82 UT: m1=9.1, Dia.=3′, DC=5... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands) (comet close to star m=7.4)
2015 Dec. 08.88 UT: m1=9.3, Dia.=4′, DC=4, Tail= 15 arcmin ... 20.0-cm SCT (50x)... Carlos Labordena (Castellón, España)
2015 Dec. 08.24 UT: m1=8.7, Dia.=8′, DC=1... 15×80 B... Alex Scholten (Eerbeek, Netherlands)
2015 Dec. 08.24 UT: m1=9.1, Dia.=4′, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Dec. 07.80 UT: m1=9.0, Dia.=4′, DC=4/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 07.792 UT: m1=8.7, Dia.=4′, DC=4... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England) [Coma elongated in PA: 66 deg.]
2015 Dec. 07.69 UT: m1=9.3, Dia.=2.5′, DC=4/... 25.5-cm L (70.6x)... Danil Sidorko (Korenovsk, Russia)
2015 Dec. 07.19 UT: m1=9.2 DSLR, Dia.=4′... digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Dec. 06.72 UT: m1=9.0 DSLR, Dia.=4′... digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Dec. 06.11 UT: m1=8.3, Dia.=6′, DC=4... 10×50 B... Juan José González (Puerto de la Cubilla, alt. 1690 m, Asturias, España) [En 25×100 B: m1=8.6]
2015 Dec. 06.07 UT: m1=9.0, Dia.=5, DC=6... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Dec. 05.89 UT: m1=9.0, Dia.=3′, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Dec. 05.88 UT: m1=8.6, Dia.=7′, DC=1... 15x80B... Alex Scholten (Eerbeek, Netherlands)
2015 Dec. 04.81 UT: m1=9.1, Dia.=3′, DC=4/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Dec. 04.78 UT: m1=8.6, Dia.=7′, DC=1... 15×80 B... Alex Scholten (Bussloo, Netherlands)
2015 Dec. 04.74 UT: m1=9.6, Dia.=4.0′, DC=6, Tail= 0.05 deg. PA: 24 deg ... 32.0-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Dec. 04.69 UT: m1=9.4, Dia.=2.8′, DC=4/... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2015 Dec. 02.69 UT: m1=9.3, Dia.=3.5′, DC=4... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2015 Nov. 30.84 UT: m1=9.5, Dia.=5′, DC=5, Tail= 0.35º en PA: 25º... 20-cm SCT (77x)... Juan José González (Alto del Trichero – Soto y Amío, alt. 1190 m, León, España) [Condensación central cuasi-estelar, m2=11.5: (Tycho-2). Estrella de magnitud 10.1 (Tycho-2) en la coma]
2015 Nov. 27.75 UT: m1=9.9, Dia.=1.3′, DC=4... 10.5-cm R f/6 (43x)... Uwe Pilz (Leipzig, Germany)
2015 Nov. 24.22 UT: m1=9.0, Dia.=5′, DC=4, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2015 Nov. 23.21 UT: m1=8.5, Dia.=6′, DC=4... 10×50 B... Juan José González (Peña Nebina – Ferreruela de Tábara, alt. 970 m, Zamora, España ) [ En 20 cm SCT (77x): m1=9.4, Dia.=4′, DC=5, Cola: 0.15º en AP 30º... condensación central cuasi-estelar, m2=11.5: ( Tycho-2 )]
2015 Nov. 22.44 UT: m1=9.4, Dia.=2.5, DC=6... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Nov. 21.05 UT: m1=9.6, Dia.=2.3′, DC=3... 12.7-cm MN (61x)... Valentín Díaz (Pantano de Elche, Alicante, España)
2015 Nov. 20.93 UT: m1=10.5, Dia.=2.5′, DC=3... 30.5-cm L f/4.9 (93x)... J. P. Navarro Pina (El Ardal 550 mts Bullas, Murcia, Spain) [moonlight 58%]
2015 Nov. 20.68 UT: m1=8.8, Dia.=4.5′, DC=6/... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2015 Nov. 18.81 UT: m1=9,0, Dia.=6.0′, DC=S6/, Tail=8-10′ PA: 30deg.... 15×70 B & 12-cm R (67x)... Gábor Sánta (Kisújszállás, Hungary) [m2=11.9, NELM at the comet=6.5, 35 deg. above horizon. Very-very clear night, best of the year]
2015 Nov. 18.792 UT: m1=9.0, Dia.=3′, DC=4... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Nov. 18.73 UT: m1=9.4, Dia.=3′, DC=s4/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Nov. 16.86 UT: m1=10.1, Dia.=2′, DC=6, Tail= 5′... 30.5-cm L f/4.9 (93x)... J. P. Navarro Pina (El Ardal Bullas 550 mts, Murcia, Spain)
2015 Nov. 15.84 UT: m1=9.4, Dia.=3′, DC=s5... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Nov. 15.79 UT: m1=8.5, Dia.=9′, DC=4... 10×50 B... Juan José González (Collado de Santa Ana – Macizo Central de Picos de Europa, alt. 2503 m, Asturias, España) [Cielo muy claro de alta montaña]
2015 Nov. 15.74 UT: m1=9.5 DSLR, Dia.=4′... Digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 15.72 UT: m1=9.8 DSLR, Dia.=4′, Tail= 5′... Digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 14.81 UT: m1=9.2, Dia.=5′, DC=4, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2015 Nov. 14.80 UT: m1=9.5, Dia.=5′, DC=5, Tail= 0.15′... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2015 Nov. 13.78 UT: m1=9.3, Dia.=5′, DC=2... 10×50 B... Alex Scholten (Bussloo, Netherlands)
2015 Nov. 13.77 UT: m1=9.3, Dia.=4′, DC=s5... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Nov. 12.18 UT: m1=9.5, Dia.=2′, DC=6... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Nov. 11.86 UT: m1=10.2, Dia.=1.1′, DC=6, Tail is 7’ long to PA: 50 deg ... 50.8-cm L (123x)... Sandor Szabo (Sopron, Hungary)
2015 Nov. 11.74 UT: m1=9.4 DSLR, Dia.=3′, Tail= 2′... Digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Nov. 11.72 UT: m1=9.3... dia.=3.5′, DC=s4/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Nov. 10.79 UT: m1=8.6, Dia.=9′, DC=4... 10×50 B... Juan José González (Horcados Rojos – Macizo Central de Picos de Europa, alt. 2344 m, Asturias, España) [Cielo muy claro de alta montaña]
2015 Nov. 10.59 UT: m1=11.3, Dia.=1.9’, DC=4... 25-cm L f:5 (39x)... Chris Wyatt (Walcha, NSW, Australia) [Outer coma diffuse and semi-opaque with opaque centre, moderately condensed, pale aqua-blue in colour. Does not enhance in Swan Band filter. No tail although there appears to be an elongation to the NE approximately. At x83 the central condensation appears to be nearing DC of 6. Low altitude = 13.6°]
2015 Nov. 10.23 UT: m1=9.3, Dia.=2.5′, DC=6... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2015 Nov. 09.79 UT: m1=10.0, Dia.=2.5′, DC=6... 30.5-cm L F/4.9 (93x)... J. P. Navarro Pina (El Ardal 550 mts., Bullas, Murcia, Spain)
2015 Nov. 08.87 UT: m1=10.1, Dia.=3′, DC=2, no tail... 30.5-cm L F/4.9 (93x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Nov. 07.83 UT: m1=8.8, Dia.=7′, DC=5... 10×50 B... Juan José González (Alto del Cellerón – Camposagrado, alt. 1190 m, León, España) [En 25x100B: m1=9.1. En 20 cm SCT (77x): m1=9.5, Dia.=4′, DC=4/, Cola: 0.15º en AP 50º... condensación central cuasi-estelar, m2=12.0: (con fotometría APASS cercana al cometa)]
2015 Nov. 07.788 UT: m1=9.2, Dia.=3′, DC=4... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England)
2015 Nov. 06.90 UT: m1=10.0, Dia.=2.5′, DC=5... 25-cm L (38x)... Valentín Díaz (La Romaneta, Alicante, España)
2015 Nov. 06.81 UT: m1=9.8, Dia.=3′, DC=6, Tail= 8′... 30,5-cm R f/4.9 (93x)... J. P. Navarro Pina (Bullas, Murcia, Spain)
2015 Nov. 05.86 UT: m1=9.5:, Dia.=2.3′, DC=s6, Tail= 2.5 arcmin ... 20-cm L (31.3x)... Artyom Novichonok (Chalna fields, Russia)
2015 Nov. 05.74 UT: m1=9.6, Dia.=2.2′, DC=3, Tail= 0.05 deg. PA: 51 deg ... 10.5-cm R f/6 (43x)... Uwe Pilz (Leipzig, Germany)
2015 Nov. 03.88 UT: m1=9.8, Dia.=4′, DC=3, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2015 Nov. 03.87 UT: m1=10.0, Dia.=4′, DC=3, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2015 Nov. 03.78 UT: m1=9.7, Dia.=2.1′, DC=s6, Tail= 2.3 arcmin ... 20-cm L (66.7x)... Artyom Novichonok (Konchezero station, Russia)
2015 Nov. 02.83 UT: m1=9.9, Dia.=4′, DC=6... 30,5-cm L f/4.9 (93x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Nov. 02.76 UT: m1=9.5, Dia.=1.2′, DC=6... 32.0-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Nov. 02.73 UT: m1=9.5, Dia.=4′, DC=s4... 15.2-cm R f/5 (38x)... Maik Meyer(Limburg, Germany)
2015 Nov. 02.03 UT: m1=9.2 DSLR, Dia.=6.3′... 55-mm lens Nikon D5200... Artyom Novichonok (Petrozavodsk, Russia)
2015 Nov. 01.92 UT: m1=9.2, Dia.=6′, DC=3... 25×100 B... Juan José González (Collada del Fresno – Sierra del Aramo, alt. 1221 m, Asturias, España) [Nov. 1.84 UT: En 20 cm SCT (77x): m1=9.7, Dia.=5′, DC=3/. Condensación central cuasi-estelar, m2=12.0: ( con fotometría APASS cercana al cometa) (Pandorado, alt. 1190 m, León]
2015 Nov. 01.76 UT: m1=9.7, Dia.=3′, DC=s4... 15.2-cm R f/5 (38x)... Maik Meyer(Limburg, Germany)
2015 Nov. 01.75 UT: m1=9,7, Dia.=4.0′, DC=s5/, Tail=3-4′ PA: 40 deg ... 12-cm R (48x)... Gábor Sánta (Kisújszállás, Hungary) [m2=12.7, NELM at the comet= 5.5-6, 48 degs. above horizon]
2015 Oct. 30.90 UT: m1=9.8 DSLR, Dia.=3.5′... 55-mm lens Nikon D5200... Artyom Novichonok (Petrozavodsk, Russia)
2015 Oct. 30.81 UT: m1=10.5, Dia.=3′, DC=3... 30,5-cm L f/4.9 (93x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Oct. 29.74 UT: m1=9.7, Dia.=3′, DC=s5... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Oct. 28.82 UT: m1=9.8 DSLR, Dia.=3.8′... 55-mm lens Nikon D5200... Artyom Novichonok (Petrozavodsk, Russia)
2015 Oct. 24.09 UT: m1=9.8, Dia.=4.2′, DC=5... 20×80 B... Marek Biely (Brno, Czech Republic) [Hills were covered by the fog but it has not influenced the observation]
2015 Oct. 22.03 UT: m1=9.3, Dia.=6′, DC=4... 25×100 B... Juan José González (Llano de las Ovejas – Sierra del Teleno, alt. 2011 m, León, España) [Cielo muy claro de montaña]
2015 Oct. 19.91 UT: m1=9.8 DSLR, Dia.=3′, DC=4... Digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 19.72 UT: m1=9.8 DSLR, Dia.=3′, DC=6... Digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 18.88 UT: m1=10.0 DSLR, Dia.=3′, DC=5... Digital reflex+0.3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 17.79 UT: m1=9.5, Dia.=4′, DC=5... 25.5-cm L (46.2x)... Danil Sidorko (Korenovsk, Russia)
2015 Oct. 17.75 UT: m1=10.1, Dia.=3.3′, DC=4... 7.6-cm f/4 L (38x)... Marek Biely (Brno, Czech Republic) [Slight interference of low clouds]
2015 Oct. 15.09 UT: m1=9.6, Dia.=5′, DC=5... 25×100 B... Juan José González (Alto del Castro, alt. 1720 m, León, España) [En 20 cm SCT (77x): m1=9.9, Dia.=4′, DC=4/. Condensación central cuasi-estelar, m2=12.5: a 133x, con fotometría APASS cercana al cometa]
2015 Oct. 12.83 UT: m1=10.1, Dia.=3′, DC=s4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Oct. 11.87 UT: m1=9.7, Dia.=4′, DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Oct. 11.86 UT: m1=10.0 DSLR, Dia.=3′, DC=3... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 11.81 UT: m1=9.9 DSLR, Dia.=4′, DC=4... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 11.80 UT: m1=10.2, Dia.=2′, DC=3... 30.5-cm L F/4.9 (93x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Oct. 11.76 UT: m1=10.2, Dia.=3′, DC=s4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Oct. 11.58 UT: m1=9.7, Dia.=5.0′, DC=7... 40.0-cm L f/4.5 (36x)... Seiichi Yoshida (Gunma, Japan)
2015 Oct. 10.81 UT: m1=11.2, Dia.=0.8′, DC=6, Tail= 0.02 deg. PA: 112 deg ... 32-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Oct. 09.90 UT: m1=10.2, Dia.=2′, DC=3... 7.5-cm R (120x)... Valentín Díaz (Aspe, Alicante, España)
2015 Oct. 09.889 UT: m1=10.0, Dia.=2′, DC=4... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Oct. 09.82 UT: m1=10.2, Dia.=3′, DC=4, no tail... 20-cm B (50x)... Carlos Labordena (Castellón, España)
2015 Oct. 08.895 UT: m1=10.0, Dia.=2′, DC=4... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Oct. 06.90 UT: m1=10.1, Dia.=3′, DC=4... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Oct. 07.93 TU: m1=10,1, Dia.=3′, DC=3... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Oct. 06.74 UT: m1=10.2 DSLR, Dia.=3′, DC=3... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 05.83 UT: m1=10.3 DSLR, Dia.=4′, DC=4... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 04.92 UT: m1=10.2 DSLR, Dia.=4′, DC=3... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 04.87 UT: m1=10.2, Dia.=4′, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Oct. 04.826 UT: m1=10.5, Dia.=2′, DC=4... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Oct. 04.77 UT: m1=10.1, Dia.=4′, DC=s4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Oct. 04.72 UT: m1=10.7, Dia.=1.8′, DC=4/... 25.5-cm L (120x)... Danil Sidorko (Korenovsk, Russia)
2015 Oct. 03.93 UT: m1=10.4 DSLR, Dia.=4′, DC=3... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Oct. 03.81 UT: m1=10.2, Dia.=3′, DC=4... 25×100 B... Mieczyslaw Leszek Paradowski (Lublin, Poland)
2015 Oct. 03.77 UT: m1=10.0, Dia.=3′, DC=s4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Oct. 03.73 UT: m1=10.2, Dia.=3.2′, DC=4... 20-cm L (66.7x)... Artyom Novichonok (Petrozavodsk, Russia)
2015 Oct. 02.77 UT: m1=10.4, Dia.=2.5′, DC=4... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Oct. 01.85 UT: m1=9.9, Dia.=4′, DC=4/... 25×100 B... Juan José González (Alto del Castro, alt. 1720 m, León, España) [En 20 cm SCT (77x): m1=10.1, Dia.=5′, DC=4. Condensación central cuasi-estelar, m2=12.7: a 133x con fotometría APASS cercana al cometa]
2015 Oct. 01.819 UT: m1=10.4, Dia.=3′, DC=4... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Oct. 01.80 UT: m1=10.2, Dia.=3′, DC=6... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2015 Oct. 01.78 UT: m1=10.3, Dia.=2.5′, DC=3/... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany) [slightly enhanced using a Lumicon Swan Band filter]
2015 Sep. 28.47 UT: m1=10.5: CCD, Dia.=&2.4′, Tail=&2.5′ in PA: 229 deg ... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.) [interference by Moon: Moon phase 1.00, altitude 25 deg.]
2015 Sep. 28.07 UT: m1=10.7 (Tri-G), Dia.=2.3′... Nikon D5200 (135-mm lens)... Artyom Novichonok (Ladva, Russia)
2015 Sep. 24.14 UT: m1=10.4, Dia.=3′, DC=3... 15.2-cm R f/5 (38x)... Maik Meyer (Limburg, Germany)
2015 Sep. 23.01 UU: m1=10.8, Dia.=2′, DC=4... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Sep. 22.86 UT: m1=11.3, Dia.=1.3′, DC=4... 20-cm L (153.8x... Artyom Novichonok (Petrozavodsk, Russia)
2015 Sep. 22.84 UT: m1=11.0, Dia.=1.4′, DC=1... 30.5-cm L f/4,9 (93x)... J. P. Navarro Pina (El Palmar, Murcia, Spain)
2015 Sep. 21.88 UT: m1=10.4, Dia.=2.1′, DC=5... 7.6-cm, f/4 L (38x)... Marek Biely (Brno, Czech Republic) [Even a bit brighter. Slight interference of low clouds]
2015 Sep. 21.74 UT: m1=10.8, Dia.=2.0′, DC=S6... 40.0-cm L f/4.5 (75x)... Seiichi Yoshida (Gunma, Japan)
2015 Sep. 20.89 UT: m1=10.7, Dia.=1.8′, DC=4... 7.6-cm, f/4 L (38x)... Marek Biely (Brno, Czech Republic) [It was not very difficult to see it. Visible also with averted vision at x15 as extremely faint and diffuse spot]
2015 Sep. 20.83 UT: m1=11.4, Dia.=1.5′, DC=5... 20-cm L (77x)... Valentín Díaz (La Romaneta, Alicante, España)
2015 Sep. 20.43 UT: m1=11.1, Dia.=1.4′, DC=4... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2015 Sep. 19.899 UT: m1=10.8, Dia.=2′, DC=3... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Sep. 18.91 UT: m1=10.6, Dia.=3′, DC=2, no tail... 20-cm B (50x)... Carlos Labordena (Castellón, España)
2015 Sep. 17.99 UT: m1=10.9, Dia.=1.3′, DC=6, Tail= 0.05 deg. PA: 241 deg ... 32.0-cm L f/5 (96x)... Uwe Pilz (Leipzig, Germany)
2015 Sep. 17.88 UT: m1=10.9: DSLR, Dia.=&1.2′, Tail=&2.5′ in PA: 232 deg ... 0.20-m f/4 reflector + DSLR camera... Taras Prystavski (Lviv, Ukraine) [[Red light pollution zone, Bortle sky class=6]
2015 Sep. 16.85 UT: m1=10.5 DSLR, Dia.=3′, DC=4... Digital Reflex+0,3m lens... Giuseppe Pappa (Sicily, Italy)
2015 Sep. 15.47 UT: m1=11.6: CCD, Dia.=1.5′, Tail= 3.2′ in PA: 239 deg ... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.)
2015 Sep. 15.13 UT: m1=10.6, Dia.=3′, DC=3/... 15.2-cm R f/5 (38x)... Maik Meyer(Limburg, Germany) [Easy object, surprisingly bright and large]
2015 Sep. 13.896 UT: m1=10.4, Dia.=2′, DC=3... 11.4-cm L f/8 (135x)... Neil Norman (Ipswich, England)
2015 Sep. 13.81 UT: m1=11.3, Dia.=&1.2′, DC=5... 20-cm L (80x)... Artyom Novichonok (Lososinnoe, Russia)
2015 Sep. 13.44 UT: m1=11.6: CCD, Dia.=&1.5′, Tail=&3.0′ in PA: 237 deg ... [T20] 0.1-m f/5.0 astrograph + CCD... A. Novichonok & T. Prystavski (iTelescope observatory, H06 remotely from Mayhill, U.S.A.)
2015 Sep. 09.90  UT: m1=10.6, Dia.=4′, DC=3... 11.4-cm L f/8 (45x)... Neil Norman (Ipswich, England) [Under perfect skies I attempted to view C/2014 S2 thinking it would be out of my reach, yet I located it quickly ,so quickly in fact I had to check several times that I was in the correct are. Rapid brightening is occurring with this object and with 3 months until perihelion, a close eye on it is advised]
2015 Sep. 07.97 UT: m1=10.8, Dia.=4′, DC=s2/... 20-cm SCT (77x)... Juan José González (Alto del Castro, alt. 1720 m, León, España) [Desde cielos oscuros de montaña el cometa aparece significativamente más brillante que lo esperado, mostrando una amplia coma difusa con débil región externa. Condensación central cuasi-estelar, m2=13.2: a 133x (con fotometría APASS cercana al cometa ). Movimiento seguido durante 60 minutos. Estrellas de campo comprobadas en el DSS. Estrella de mag 12.6 (GSC) en la coma. Cielo muy claro de montaña]
2015 Sep. 06.94 UT: m1=12.1, Dia.=0.5’, DC=6... 60.3-cm L (187x)... Sandor Szabo (Sopron, Hungary)
2015 Aug. 24.91 UT: m2=14.4 DSLR, Dia.=&0.7′, Tail=&0.9′ in PA: 257 deg ... 0.20-m f/4 reflector + DSLR camera... Taras Prystavski (Lviv, Ukraine) [Red light pollution zone, Bortle sky class=6]
2015 Aug. 19.89 UT: m1=13.2: CCD, Dia.=&0.7′, Tail=&1′ in PA: 256 deg ... 0.08-m f/7.5 refractor + CCD... A. Novichonok, T. Prystavski (Konchezero Stn., Republic of Karelia, Russia)
2015 Aug. 16.86 UT: m1=13.4: CCD, Dia.=&0.9′, Tail=&1′ in PA: 248 deg ... 0.07-m f/6 refractor + CCD... A. Novichonok, K. Nezgovorov & T. Prystavski (Petrozavodsk State University Observatory, C30 Sheltozero Stn., Russia)
2015 Aug. 13.95 UT: m1=13.8, Dia.=0.5′, DC=4... 60.3-cm L (244x)... Sandor Szabo (Sopron, Hungary)

Heliocentric Magnitude versus Days form T (Perihelion)

Heliocentric Magnitude versus Log R