1 Message
Digest #3359
Message
Mon Dec 18, 2017 2:33 am (PST) . Posted by:
"Juan Jose Gonzalez" jjgsgp
62P/Tsuchinshan:
2017 Dec. 16.19 UT: m1=9.7, Dia.=6', DC=2/, 20 cm SCT (77x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 21.0.].
C/2016 R2 (PANSTARRS):
2017 Dec. 16.14 UT: m1=10.1, Dia.=5', DC=2, 20 cm SCT (77x).
[ Increasing activity. It is difficult to separate the
contribution of the inner ion tail from that of the coma
to the total magnitude m1. Field stars checked in DSS.
Sidgwick method. Tycho-2 comparison stars. SQM : 20.9.].
C/2017 T1 (Heinze):
2017 Dec. 16.08 UT: m1=12.0, Dia.=2.5', DC=2/, 20 cm SCT (133x).
[ Faint outer coma. Motion checked during a 30-min period.
Field stars checked in DSS. Sidgwick method.
APASS comparison stars. SQM : 21.1.].
( Villacintor, Leon, Spain; Alt. 930 m, 42º 29' N, 5º 11' W;
Rural location, very clear sky. SQM 21.3 at zenith.).
----------------------------------------------------------
ICQ Format :
62 2017 12 16.19 S 9.7 TK 20.3T10 77 6 2/ ICQ XX GON05
2016R2 2017 12 16.14 S 10.1 TK 20.3T10 77 5 2 ICQ XX
GON05
2017T1 2017 12 16.08 S 12.0 AQ 20.3T10 1332.5 2/ ICQ XX GON05
----------------------------------------------------------
J. J. Gonzalez
----------------------------------------------------------
2017 Dec. 16.19 UT: m1=9.7, Dia.=6', DC=2/, 20 cm SCT (77x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 21.0.].
C/2016 R2 (PANSTARRS):
2017 Dec. 16.14 UT: m1=10.1, Dia.=5', DC=2, 20 cm SCT (77x).
[ Increasing activity. It is difficult to separate the
contribution of the inner ion tail from that of the coma
to the total magnitude m1. Field stars checked in DSS.
Sidgwick method. Tycho-2 comparison stars. SQM : 20.9.].
C/2017 T1 (Heinze):
2017 Dec. 16.08 UT: m1=12.0, Dia.=2.5', DC=2/, 20 cm SCT (133x).
[ Faint outer coma. Motion checked during a 30-min period.
Field stars checked in DSS. Sidgwick method.
APASS comparison stars. SQM : 21.1.].
( Villacintor, Leon, Spain; Alt. 930 m, 42º 29' N, 5º 11' W;
Rural location, very clear sky. SQM 21.3 at zenith.).
------------------------------
ICQ Format :
62 2017 12 16.19 S 9.7 TK 20.3T10 77 6 2/ ICQ XX GON05
2016R2 2017 12 16.14 S 10.1 TK 20.3T10 77 5 2 ICQ XX
GON05
2017T1 2017 12 16.08 S 12.0 AQ 20.3T10 1332.5 2/ ICQ XX GON05
------------------------------
J. J. Gonzalez
------------------------------
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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