C/2018 N1 (NEOWISE)

C/2018 N1 (NEOWISE)
Reported observations:
2018 Sep. 08.39 UT: m1=12.9, Dia.=1.8’, DC=1/, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Very difficult, diffuse. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 Sep. 07.43 UT: m1=12.4, Dia.=2’, DC=2, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, slight brightening to centre. Thunderstorms and lightning in vicinity making obs difficult. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 Sep. 01.86 UT: m1=9.3, Dia.=10', DC=2, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Several stars inside the coma, the brightest being mag. 10.1 (TK). Altitude: 18 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.0]
2018 Aug. 14.89 UT: m1=8.9, Dia.=9', DC=2, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Altitude: 21 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.1]
2018 Aug. 14.47 UT: m1=10.4, Dia.=5.4’, DC=2, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse, transparent and weakly condensed. Enhances slightly in Swan band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Aug. 13.38 UT: m1=10.2, Dia.=6.4’, DC=3, ... 25-cm L f:5(x39) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse and transparent with slight brightening to an opaque centre. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Aug. 11.84 UT: m1=10.8, Dia.=1.5', DC=d2, ... 0.60-m f/4 L(188x) ... Gabor Santa (Tarján, Hungary) [very diffuse, borderless coma with weak condensation, outer regions are very dim. h=15 deg.]
2018 Aug. 10.09 UT: m1=9.6, Dia.=7', DC=1/, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Method: S]
2018 Aug. 10.06 UT: m1=9.8, Dia.=5', DC=2, ... 22-cm L (60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Method: S]
2018 Aug. 09.94 UT: m1=9.0, Dia.=7', DC=3, ... 30.5-cm L (97x) ... J. P. Navarro Pina (Fuente Caputa, Murcia, Spain) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.6 at zenith. Lm= 5.9] 
2018 Aug. 09.89 UT: m1=8.8, Dia.=10', DC=2, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Diffuse and wide coma. Observation made under better conditions, providing a wider coma diameter and brighter m1 estimate in comparison with my previous Aug. 7 observation. Altitude: 22 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.1; 21.6 at zenith]
2018 Aug. 08.39 UT: m1=9.8, Dia.=5.2’, DC=2/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Very diffuse, transparent coma, weakly condensed. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Aug. 07.96 UT: m1=9.2, Dia.=8', DC=1/, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Altitude: 12 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.0; 21.5 at zenith]
2018 Aug. 06.59 UT: m1=9.7, Dia.=10’, DC=2, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma visible as a large weakly condensed patch of light. Enhances well in Swan Band filter. Sky background appears light in colour due to nearby Rho Ophiuchi region. Comparison stars checked using Tycho-2 data in Gu,de 9.0, Method= S, Cat= TK]
2018 Aug. 03.87 UT: m1=9.1, Dia.=8', DC=2, ... 15-cm T(30x) ... Carlos Labordena (Castellón, España)
2018 Aug. 02.35 UT: m1=9.1, Dia.=9.3’, DC=3, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, weakly condensed. Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2018 Aug. 01.91 UT: m1=8.5, Dia.=11', DC=1/, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain; Alt. 1720 m, 42º 54' N, 5º 48' W) [Very diffuse and wide coma. Altitude: 18 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 20.9]
2018 Aug. 01.39 UT: m1=9.3, Dia.=6', DC=2, ... 25x100 B ... David A. J. Seargent (Cowra, NSW, Australia) [Rather slight but noticeable enhancement using Swan Band filter. Very diffuse and of low surface brightness]
2018 Aug. 01.35 UT: m1=9.8, Dia.=8.3’, DC=2, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint stars in coma. Coma large, transparent and diffuse. Enhances slightly in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 July 31.90 UT: m1=8.5, Dia.=12', DC=1/, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain; Alt. 1720 m, 42º 54' N, 5º 48' W) [Very diffuse and wide coma. Altitude: 16 deg. Sidgwick method. Tycho-2 comparison stars. SQM : 20.8; 21.5 at zenith]
2018 July 30.35 UT: m1=9.2, Dia.=7’, DC=2, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse and large. Enhances slightly in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK]
2018 July 23.74 UT: m1=9.5, Dia.=9’, DC=4, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse. Moderately condensed opaque centre, faint star in coma. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 July 22.09 UT: m1=8.3, Dia.=15', DC=2, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Quintanilla de los Oteros, Leon, Spain. Alt. 860 m, 42º 19' N, 5º 24' W) [Very diffuse and wide coma. Altitude: 17 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.2]
2018 July 20.73 UT: m1=9.7, Dia.=5.2’, DC=3, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse, slight brightening to centre. Comparison stars checked using Tycho-2 data in Guide 9.0. Method= S. Cat= TK]
2018 July 18.75 UT: m1=9.9, Dia.=6.8’, DC=3/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma large and diffuse, enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0. Method= M. Cat= TK]
2018 July 18.19 UT: m1=11.1, Dia.=3', DC=2, ... 22-cm L (160x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 July 18.11 UT: m1=8.8, Dia.=12', DC=1/, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Mag. 11.0 (TK) star in coma. Altitude: 21 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.0]
2018 July 16.72 UT: m1=10.1, Dia.=5.5’, DC=3, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Close to bright star, weakly condensed. Coma slightly elongated to NW. Enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 July 15.55 UT: m1=10.7, Dia.=4’, DC=2/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 17.2°; Coma very diffuse and weakly condensed. Enhances in Swan band filter. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 July 15.25 UT: m1=11.7, Dia.=3', DC=2/, ... 22-cm L (160x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 July 15.10 UT: m1=11.2, Dia.=2', DC=2, ... 20-cm T(80x) ... Carlos Labordena (Castellón, España) [no tail]
2018 July 14.04 UT: m1=11.6, Dia.=1.1', DC=1, ... 60-cm L (187x) ... Sandor Szabo (Sopron, Hungary)
2018 July 13.75 UT: m1=10.3, Dia.=5’, DC=3, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint stars in coma. Very diffuse coma, slightly brighter but weakly condensed centre. Enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 July 13.72 UT: m1=12.0, Dia.=1.8', DC=2/, ... 40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Gunma, Japan)
2018 July 11.75 UT: m1=11.1, Dia.=4.1’, DC=2/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma enhances in Swan Band filter, very diffuse, weakly condensed. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 July 10.10 UT: m1=9.4, Dia.=12', DC=1/, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain; Alt. 1720 m, 42º 54' N, 5º 48' W) [Brighter than expected. From dark mountain skies the comet shows a large and very diffuse outer coma. Field stars checked in DSS. Altitude: 17 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.0]
2018 July 09.82 UT: m1=11.2:, Dia.=5’, DC=2, ... 25x100 B ... Michael Mattiazzo (Swan Hill, Vic, Australia) [First visual observation. Very diffuse coma that enhances slightly using a Swan band filter]
2018 July 09.64 UT: m1=11.5, Dia.=3.3’, DC=3, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, opaque centre. Close to mag 11.8 star. Visible at x39 but difficult to separate from star. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 July 08.791 UT: m1=11.4, Dia.=4', DC=2, ... 40.6-cm L F/4 (76x) ... Paul Camilleri (Katherine, NT, Australia)
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