Fwd: [CometObs] Digest Number 3320

Comet Observations Group

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Digest #3320

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C/2017 O1. by "Juan Jose Gonzalez" jjgsgp

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C/2017 O1.

Mon Sep 25, 2017 2:29 am (PDT) . Posted by:

"Juan Jose Gonzalez" jjgsgp

C/2017 O1 (ASASSN):
2017 Sep. 25.01 UT: m1=8.3, Dia.=10', DC=3, 10x50B.
[ In 25x100B : m1=8.5, Dia.=9', DC=2/.
The visual lightcurve seems to show a slowdown in the recent weeks.
Sidgwick method. Tycho-2 comparison stars. SQM : 21.2.].

( Puerto de Aralla, Leon, Spain; Alt. 1490 m, 42º 54' N, 5º 48' W.
Mountain location, very clear sky. SQM 21.3 at zenith.).

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ICQ Format :

2017O1 2017 09 25.00 S 8.5 TK 10.0B 25 9 2/ ICQ XX GON05

2017O1 2017 09 25.01 S 8.3 TK 5.0B 10 10 3 ICQ XX GON05

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J. J. Gonzalez

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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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Profile: http://www.google.com/profiles/astrocomera

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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/