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Digest #3329
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Thu Oct 19, 2017 9:05 pm (PDT) . Posted by:
"Bomber2 Panther" outbackmanyep
Comet Observations 19th October 2017
C/2015 V2 Johnson
2017 Oct 19.45 UT; m1= 12.2; Dia= 1.7'; DC= 2; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, slight brightening to centre but very weak.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
71P/ Clark
2017 Oct 19.45 UT; m1= 13.1; Dia= 1.5'; DC= 2/3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse, slight brightening to centre.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
29P/ Schwassmann – Wachmann 1
2017 Oct 19.46 UT; m1= 12.0; Dia= 3.7'; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse, appears as a misty patch just above sky background threshold. Just visible at x39 so coma diameter may even be slightly larger.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
C/2015 V2 Johnson
2017 Oct 19.45 UT; m1= 12.2; Dia= 1.7'; DC= 2; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, slight brightening to centre but very weak.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
71P/ Clark
2017 Oct 19.45 UT; m1= 13.1; Dia= 1.5'; DC= 2/3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse, slight brightening to centre.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
29P/ Schwassmann – Wachmann 1
2017 Oct 19.46 UT; m1= 12.0; Dia= 3.7'; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse, appears as a misty patch just above sky background threshold. Just visible at x39 so coma diameter may even be slightly larger.
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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