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Digest #3300
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Mon Aug 14, 2017 10:24 pm (PDT) . Posted by:
"Bomber2 Panther" outbackmanyep
Comet Observations 14th August 2017
C/2015 V2 Johnson
2017 Aug 14.43 UT; m1= 10.1; Dia= 4.8'; DC= 5/6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, faintly extended to the North approximately. Faint stellar central condensation visible in periods of good seeing. Dims in Swan Band filter.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK
71P/ Clark
2017 Aug 14.44 UT; m1= 12.0; Dia= 1.6'; DC= 3/4; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, slight interference by background stars.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ
29P/ Schwassmann-Wachmann 1
2017 Aug 14.45 UT; m1= 13.9; Dia= 1.1'; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse, just above background threshold.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
213P/ Van Ness
2017 Aug 14.46 UT; m1= 13.5; Dia= 0.8'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, difficult due to crowded field.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ
C/2015 O1 PanSTARRS
2017 Aug 14.47 UT; m1= 14.1; Dia= 0.4'; DC= 3; 25cm L, f:5 (x166) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, slight brightening to centre.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
C/2015 VL62 Lemmon-Yeung-PanSTARRS
2017 Aug 14.47 UT; m1= 13.6; Dia= 1'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma small and diffuse, slight brightening to centre.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
C/2015 V2 Johnson
2017 Aug 14.43 UT; m1= 10.1; Dia= 4.8'; DC= 5/6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, faintly extended to the North approximately. Faint stellar central condensation visible in periods of good seeing. Dims in Swan Band filter.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK
71P/ Clark
2017 Aug 14.44 UT; m1= 12.0; Dia= 1.6'; DC= 3/4; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, slight interference by background stars.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ
29P/ Schwassmann-Wachmann 1
2017 Aug 14.45 UT; m1= 13.9; Dia= 1.1'; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse, just above background threshold.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
213P/ Van Ness
2017 Aug 14.46 UT; m1= 13.5; Dia= 0.8'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, difficult due to crowded field.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ
C/2015 O1 PanSTARRS
2017 Aug 14.47 UT; m1= 14.1; Dia= 0.4'; DC= 3; 25cm L, f:5 (x166) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, slight brightening to centre.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
C/2015 VL62 Lemmon-Yeung-PanSTARRS
2017 Aug 14.47 UT; m1= 13.6; Dia= 1'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma small and diffuse, slight brightening to centre.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
Good Clear Skies
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Astrocomet
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Colin James Watling
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Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
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Real Astronomer and head of the Comet section for LYRA (Lowestoft and Great Yarmouth Regional Astronomers) also head of K.A.G (Kessingland Astronomy Group) and Navigator (Astrogator) of the Stars (Fieldwork)
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Lyra Main Website: http://www.lyra-astro.co.uk/
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