Fwd: [CometObs] Digest Number 3346

Comet Observations Group

2 Messages

Digest #3346

1

24P and 62P in binoculars, C/2016 N6, C/2016 R2, C/2017 O1. by "Juan Jose Gonzalez" jjgsgp

2

Observations Nov 12 - Nov 14 by "Thomas Lehmann" ewelot

Messages

1

24P and 62P in binoculars, C/2016 N6, C/2016 R2, C/2017 O1.

Fri Nov 17, 2017 3:21 am (PST) . Posted by:

"Juan Jose Gonzalez" jjgsgp

24P/Schaumasse:
2017 Nov. 16.21 UT: m1=9.7, Dia.=6', DC=2/, 25x100B.
[ Altitude: 29 deg. Zodiacal light. In 20 cm SCT (77x) :
m1=9.9, Dia.=5', DC=2/. Sidgwick method.
Tycho-2 comparison stars. SQM : 20.9.].

62P/Tsuchinshan:
2017 Nov. 16.16 UT: m1=9.2, Dia.=7', DC=2/, 25x100B.
[ Altitude: 30 deg. In 20 cm SCT (77x) :
m1=9.6, Dia.=6', DC=2. Sidgwick method.
Tycho-2 comparison stars. SQM : 21.0.].

C/2016 N6 (PANSTARRS):
2017 Nov. 16.23 UT: m1=13.5, Dia.=0.5', DC=4, 20 cm SCT (206x).
[ Field stars checked in DSS. Sidgwick method.
APASS comparison stars. SQM : 21.1.].

C/2016 R2 (PANSTARRS):
2017 Nov. 16.18 UT: m1=11.7, Dia.=1.3', DC=3/, 20 cm SCT (133x).
[ Sidgwick method. APASS comparison stars. SQM : 20.9.].

C/2017 O1 (ASASSN):
2017 Nov. 16.25 UT: m1=9.8, Dia.=5', DC=2/, 20 cm SCT (77x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 21.1.].

( Puerto de Aralla, Leon, Spain; Alt. 1530 m, 42º 54' N, 5º 48' W ;

Mountain location, very clear sky. SQM 21.2 at zenith.).

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ICQ Format :

24 2017 11 16.19 S 9.9 TK 20.3T10 77 5 2/ ICQ XX GON05

24 2017 11 16.21 S 9.7 TK 10.0B 25 6 2/ ICQ XX GON05

62 2017 11 16.15 S 9.6 TK 20.3T10 77 6 2
ICQ XX GON05

62 2017 11 16.16 S 9.2 TK 10.0B 25 7 2/ ICQ XX GON05

2016N6 2017 11 16.23 S 13.5 AQ 20.3T10 206 0.5 4 ICQ XX GON05

2016R2 2017 11 16.18 S 11.7 AQ 20.3T10 133 1.3 3/ ICQ
XX GON05

2017O1 2017 11 16.25 S 9.8 TK 20.3T10 77 5 2/ ICQ
XX GON05

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J. J. Gonzalez

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2

Observations Nov 12 - Nov 14

Fri Nov 17, 2017 1:37 pm (PST) . Posted by:

"Thomas Lehmann" ewelot

Please find enclosed a list of my recent comet observations in ICQ format.
Magnitudes are derived from large aperture photometry of CCD/DSLR images
(using green filter or green color channel) and are supposed to conform
to visual estimates of total coma magnitudes.

Remote observations were carried out using telescopes from iTelescope.net.
For image reduction and photometric analysis I used my AIRTOOLS software
(see https://github.com/ewelot/airtools).

Thomas Lehmann
Weimar, Germany

2015ER612017 11 13.88 C 13.7 AQ 20.0L 4D320 2.9 0.75 261 LEHaa 20.3 DSLR green

2015V2 2017 11 14.44 C 12.2 AQ 10.6R 5a600 5.5 0.2 312 LEHaa 19.2 CCD/G remote (SSO)

2016M1 2017 11 13.73 C 14.5 AQ 20.0L 4C480 1.1 0.01 8 LEHaa 20.5 DSLR green

2017O1 2017 11 12.31 C 9.4 AQ 10.6R 5a240 17 0.18 230 LEHaa 18.2 CCD/G remote (Mayhill)

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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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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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