C/2016 U1 (NEOWISE)

C/2016 U1 (NEOWISE)
Reported observations:
2017 Jan. 07.27 UT: m1=7.5, Dia.=1.5′, DC=7/... 25×100 B... Juan Jose Gonzalez (Alto del Castro, Leon, Spain... Alt. 1720 m, 42º 54′ N, 5º 48′ W) [In 20 cm SCT (77x): Tail: 0.1 deg. in PA 310 deg. Morris method. Tycho-2 comparison stars at the same low altitude (8 deg) as the comet. Astronomical twilight. Mountain location, very clear sky]
2017 Jan. 06.19 UT: m1=7.7, Dia.=1.7′, DC=8... 11.4-cm L f:5 (40x)... Artyom Novichonok (Lososinnoe, Karelia) [Bright, easy, very condensed comet. Unfortunately, there is cloudy forecast for nearest night and I possibly will not see the comet again. I imaged it without tracking but 0.5 deg tail still visible (don’t visible visually)]
2017 Jan. 05.252 UT: m1=7.6, Dia.=4′, DC=5... 20×80 B... Neil Norman (Ipswich, England)
2017 Jan. 05.25 UT: m1=7.8, Dia.=2′, DC=7, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2017 Jan. 05.18 UT: m1=7.7, Dia.=2.0′, DC=8... 11.4-cm L f:5 (40x)... Artyom Novichonok (Konchezero, Karelia) [SQM-L ~ 20.2, Alt. 7.5 deg, astronomical twilight, -28 С. Very small and condensed comet]
2017 Jan. 03.24 UT: m1=8.2, Dia=4′, DC=6, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2017 Jan. 03.18 UT: m1=7.9, Dia.=1.9′, DC=7... 20.0-cm L f:5 (80x)... Artyom Novichonok (Konchezero, Karelia) [SQM-L ~ 20.6, Alt. 8 deg. Very small and condensed comet]
2017 Jan. 01.26 UT: m1=8.1, Dia.=3′, DC=7... 10×50 B... Juan Jose Gonzalez (Puerto de las Señales, Leon, Spain... Alt. 1610 m, 43º 05′ N, 5º 14′ W) [Morris method. Tycho-2 comparison stars. SQM: 21.7 at zenith. Altitude: 13 deg. Mountain location, very clear sky]
2017 Jan. 01.24 UT: m1=8.7, Dia=5′, DC=5, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2016 Dec. 31.20 UT: m1=8.3, Dia.=4.0′, DC=5... 20×80 B... Marek Biely (Brno, 244 m.a.s.l., Czech Republic) [Freezing conditions (temp.: ~ -9 °C). Low altitude: 12.2 deg. above the horizon. Correction for an atmospheric extinction not needed.]
2016 Dec. 31.19 UT: m1=8.6, Dia.=3', ... 25x100 B ... Mieczyslaw Leszek Paradowski (Lublin, Poland) [Comet alt. 13 deg]
2016 Dec. 30.22 UT: m1=8.0, Dia.=&4, DC=8... 20-cm L (42x)... Alex Scholten (Eerbeek, Netherlands)
2016 Dec. 30.22 UT: m1=8.1, Dia.=2.3′, DC=d6... 32-cm L f/5 (45x)... Uwe Pilz (Leipzig, Germany)
2016 Dec. 30.20 UT: m1=8.4, Dia.=3.5′, DC=5... 20×80 B... Marek Biely (Brno, 244 m.a.s.l., Czech Republic) [Freezing conditions (temp.: ~ -7 °C). Low altitude: 13.2 deg. above the horizon. Correction for an atmospheric extinction not needed.]
2016 Dec. 30.19 UT: m1=8.2, Dia.=2’, DC=8... 20×90 B... Sandor Szabo (Hungary)
2016 Dec. 30.19 UT: m1=8.0, Dia.=3’, DC=6... 60-cm L (77x)... Sandor Szabo (Hungary)
2016 Dec. 29.20 UT: m1=8.2, Dia.=4.1′, DC=6/... 20×80 B... Marek Biely (Brno, 244 m.a.s.l., Czech Republic) [An observation made after almost 7 months long observing blank. Comet bright and well condensed. Low altitude: 15.9 deg. above the horizon. Correction for an atmospheric extinction not needed]
2016 Dec. 29.20 UT: m1=8.4, Dia.=4.5′, DC=6... 35-cm L (62x)... Jakub Cerny (Senohraby, Czech Republic)
2016 Dec. 29.19 UT: m1=7,8, Dia.=7’, m2=8.3 (strong disc-like condensation), Dia.=3,5′, DC=D6... 15×70 B... Gabor Santa (Göd, Pest county, Hungary) [Good suburbian location. Disc-like, strongly condensed inner coma in a large, very-very faint outer coma. Inner part is slightly excentric to East. Nelm at the comet: 4m]
2016 Dec. 26.26 UT: m1=8.3, Dia.=5′, DC=5/... 10×50 B... Juan José González (Les Retuertes – Sierra del Aramo, alt. 1350 m, Asturias, España... Alt. 1350 m, 43º 10′ N, 5º 54′ W) [Método Morris. Estrellas de comparación Tycho-2. Crepúsculo astronómico. Altura sobre el horizonte: 23º. Cielo muy claro de montaña]
2016 Dec. 23.21 UT: m1=10.2, Dia=6′, DC=4, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Dec. 23.21 UT: m1=10.0, Dia=6′, DC=3, no tail... 8-cm B (11x)... Carlos Labordena (Castellón, España)
2016 Dec. 23.18 UT: m1=8.9, Dia.=4′, DC=4... 33-cm L (67x)... Piotr Guzik (Biórków Mały, Poland... Alt. 265 m, 50º 09′ N, 20º 11′ E) [Morris method used. Bright, moderately condensed, round object. SQM: 20.5 at zenith]
2016 Dec. 23.18 UT: m1=8.5, Dia.=6′, DC=4... 10×50 B... Piotr Guzik (Biórków Mały, Poland... Alt. 265 m, 50º 09′ N, 20º 11′ E) [Morris method used. Bright, moderately condensed, round object. Pretty faint (though still obvious) in 10×50 binoculars. SQM: 20.5 at zenith]
2016 Dec. 12.17 UT: m1=10.2, Dia.=3.5′, DC=2... 20.0-cm L f:5 (80x)... Artyom Novichonok (Konchezero, Karelia) [SQM-L ~ 20.8 near Konchezero]
2016 Dec. 11.50 UT: m1=9.8, Dia.=5′... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Dec. 11.05 UT: m1=12.6 CCD, Dia.=1.55′, DC=2/... 0.25-m L f/4.7... Sergey Shurpakov (C36, Baran’, Belarus)
2016 Dec. 10.49 UT: m1=10.0, Dia.=4′... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Dec. 10.22 UT: m1=9.7, Dia.=6′, DC=3... 25×100 B... Juan José González (Les Retuertes – Sierra del Aramo, alt. 1350 m, Asturias, España) [En 20 cm SCT (77x): m1=9.9... Cielo muy claro de montaña]
2016 Dec. 09.51 UT: m1=10.3, Dia.=3′... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Dec. 08.50 UT: m1=10.3, Dia.=3′... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Dec. 06.67 UT: m1=10.6, Dia.=4.5′, DC=1/... 20.0-cm L f:5 (80x)... Artyom Novichonok (Konchezero, Karelia) [SQM-L ~20.7 near Konchezero]
2016 Dec. 06.20 UT: m1=10.2, Dia.=6′, DC=2... 25×100 B... Juan José González (Les Retuertes – Sierra del Aramo, alt. 1350 m, Asturias, España) [Cielo muy claro de montaña]
2016 Dec. 06.02 UT: m1=11.0, Dia.=4′, DC=1... 20.0-cm L f:5 (80x)... Artyom Novichonok (Konchezero, Karelia) [SQM-L ~ 20.3 Konchezero]
2016 Dec. 05.24 UT: m1=10.3, Dia.=6′, DC=2... 20-cm SCT (77x)... Juan José González (Pico del Pozo de la Nieve – Sierra de la Bobia, alt. 1130 m, Asturias, España)
2016 Dec. 05.17 UT: m1=10.4, Dia.=4, DC=1/... 25.4-cm L f:5 (64x)... Maik Meyer (Limburg, Germany) [comet enhanced using a Lumicon Swan Band Filter, motion noticeable within 10 minutes]
2016 Dec. 04.49 UT: m1=10.5, Dia.=3’, DC=1... 30×125 B... Carl Hergenrother (Tucson, AZ, USA)
2016 Dec. 03.13 UT: m1=11.5, Dia=3′, DC=1, no tail... 20-cm SCT (80x)... Carlos Labordena (Castellón, España)
2016 Dec. 02.79 UT: m1=13.1, Dia.=1.5′, DC=1... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2016 Nov. 30.14 UT: m1=10.5, Dia.=6′, DC=1/... 20-cm SCT (77x)... Juan José González (Les Retuertes – Sierra del Aramo, alt. 1350 m, Asturias, España) [Cielo muy claro de montaña]
2016 Nov. 29.21 TU: m1=11.5, Dia.=2.3′, DC=1/... 25.4-cm L f:5 (104x)... Maik Meyer (Limburg, Germany) [comet barely visible, extremely diffuse]
2016 Nov. 29.11 UT: m1=13.2, Dia.=1.0′, DC=0... 60-cm L (184x)... Sandor Szabo (Hungary) [Very diffuse, good response to SWAN comet filter: Coma became 2.0’ diameter, DC:1]
2016 Nov. 29.63 UT: m1=[10.4, Negative... 20.0-cm L f:5 (154x)... Artyom Novichonok (Konchezero, Karelia) [SQM-L ~ 20.3 Konchezero, Alt. 26 deg]
2016 Nov. 25.20 UT: m1=11.6, Dia.=3.5′, DC=1/... 20-cm SCT (100x)... Juan José González (Sierra de Tineo, alt. 1040 m, Asturias, España) [Coma exterior débil y muy difusa. Seguido durante 60 min, con obvio movimiento. Estrellas de comparación de la fotometría APASS cercana al cometa. Estrellas de campo comprobadas en el DSS. Cielo muy claro de montaña]