C/2017 T3 (ATLAS)

C/2017 T3 (ATLAS)
*** Reported observations:
2018 Aug. 29.37 UT: m1=12.3, Dia.=1.4’, DC=2/, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slight brightening to centre. Low altitude= 13.4°. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 Aug. 14.36 UT: m1=10.2, Dia.=3.3’, DC=3, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 6.3°; Moonlight. Very diffuse. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Aug. 13.36 UT: m1=10.2, Dia.=2.6’, DC=4, ... 25-cm L f:5(x39) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 5.4°; Coma diffuse, moderately condensed, slight twilight interference. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Aug. 08.79 UT: m1=9.6, Dia.=3.2’, DC=5/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude= 4.8°. Diffuse, compact and opaque centre. Slight Moonlight/twilight interference (Moon Alt= 8.0°, 9.7% illuminated). Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 July 26.37 UT: m1=8.6:, Dia.=4', DC=4, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Comet altitude: 12° / Sul -12° - nautical twilight]
2018 July 23.79 UT: m1=9.2, Dia.=2.2’, DC= 5, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 6.7°; Opaque centre, pale aqua-blue in colour. Enhances strongly in Swan band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 July 20.79 UT: m1=9.2, Dia.=3.7’, DC=5/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 6.7°; Opaque inner coma, aqua-blue in colour, stellar in good seeing. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 July 18.79 UT: m1=9.3, Dia.=3’, DC=5/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude= 7.8°. Coma small and well condensed with an opaque centre, appears stellar in moments of good seeing. Enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 July 18.37 UT: m1=8.7, Dia.=4', DC=4/, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Comet altitude: 13°, sun altitude: -13° / nautical twilight]
2018 July 16.79 UT: m1=8.9, Dia.=5.2’, DC=5, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude= 7.7°; Opaque centre, well condensed, semi-transparent outer coma. Enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 July 13.79 UT: m1=9.4, Dia.=3’, DC=6, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 7.2°; Enhances in Swan Band filter. Faint tail visible, traced to 3.8’ in length in P.A. 260° approximately. Faint stellar central condensation, opaque centre, diffuse edges. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 July 11.79 UT: m1=9.3, Dia.=4.4’, DC=4, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 7.4°; Coma diffuse, moderately condensed, opaque centre. Hint of coma extension to the SW approximately. Slight interference from zodiacal light. Enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 June 23.81 UT: m1=8.8, Dia.=4.1’, DC=4, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 4.9°; Enhances in Swan Band filter. Opaque centre, moderately condensed. Zodiacal light and twilight interference. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 June 22.81 UT: m1=9.4, Dia.=2.8’, DC=4, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Diffuse coma, moderately condensed. Enhances in Swan Band filter. Low altitude= 5.7°, interference from zodiacal light and twilight. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Apr. 06.80 UT: m1=[14.2, negative, ... 60-cm reflector (305x) ... Sandor Szabo (Sopron, Hungary) [Only 10 deg above horizon]
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