Fwd: [CometObs] Digest Number 3348

Comet Observations Group

3 Messages

Digest #3348

1

OBS-V: C/2017 O1 (Nov. 22) by "Maik Meyer" maiki666

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Observations Nov 15 - Nov 20 by "Thomas Lehmann" ewelot

3.1

OBS-V by "Castell.Nova" szasa0

Messages

1

OBS-V: C/2017 O1 (Nov. 22)

Wed Nov 22, 2017 10:22 am (PST) . Posted by:

"Maik Meyer" maiki666

2017O1 2017 11 22.71 S 10.1 TK 25.4L 5 64 3 2 ICQ XX MEY

Limburg, Germany
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2

Observations Nov 15 - Nov 20

Wed Nov 22, 2017 12:46 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

2016R2 2017 11 19.35 C 10.8 AQ 10.6R 5a720 11 0.11 251 LEHaa 18.4 CCD/G remote (Mayhill)

2017K2 2017 10 14.82 C 18.7 AQ 20.3L 4E760 0.7 LEHaa 21.2 DSLR green, images by F. Niebling, M. Büchner

2017O1 2017 08 04.09 C 9.6 AQ 20.0L 3A200 20 LEHaa 19.8 CCD/G, remote images by M. Nischang (ROSA)
2017O1 2017 08 23.10 C 9.4 AQ 30.0L 3A600 18 0.38 254 LEHaa 20.2 CCD/G, remote images by M. Nischang (ROSA)
2017O1 2017 11 16.48 C 9.9 AQ 10.6R 5a480 15 0.13 220 LEHaa 18.5 CCD/G remote (Mayhill)

24 2017 11 15.49 C 11.2 AQ 10.6R 5a720 10 LEHaa 18.9 CCD/G remote (Mayhill), moon 9% dist 21deg

62 2017 11 15.46 C 10.6 AQ 10.6R 5a720 12 LEHaa 18.3 CCD/G remote (Mayhill), moon 9% dist 36deg

71 2017 11 20.43 C 13.1 AQ 40.0L 4a480 6 LEHaa 19.9 CCD/G remote (SSO)

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3.1

OBS-V

Thu Nov 23, 2017 12:29 pm (PST) . Posted by:

"Castell.Nova" szasa0

Hello to the Group,

new visual observations from last night:

47P/Ashbrook-Jackson

2017 Nov. 22.88 UT: m1=15.3, Dia.=0.25', DC=5, 60 cm reflector (407x)

145P/Schoemaker-Levy

2017 Nov. 22.99 UT: m1=15.7, Dia.=0.2', DC=1, 60 cm reflector (407x)

217P/LINEAR

2017 Nov. 22.96 UT: m1=15.2, Dia.=0.4', DC=4, 60 cm reflector (407x)

355P/LINEAR-NEAT

2017 Nov. 22.83 UT: m1=14.8, Dia.=0.7', DC=3, 60 cm reflector (306x)

C/2011 KP36 (Spacewatch)

2017 Nov. 22.94 UT: m1=15.0, Dia.=0.5', DC=3, 60 cm reflector (306x)

C/2015 V1 (PANSTARRS)

2017 Nov. 22.85 UT: m1=15.1, Dia.=0.6', DC=3, 60 cm reflector (407x)

C/2016 R2 (PANSTARRS)

2017 Nov. 22.92 UT: m1=11.9, Dia.=1.2', DC=5, 60 cm reflector (244x)

C/2017 S6 (Catalina)

2017 Nov. 22.90 UT: m1=15.6, Dia.=0.2', DC=3, 60 cm reflector (407x)

Very fast moving comet, easy to check its path among the stars in 10 minutes.

(3200) Phaeton

2017 Nov. 22.98 UT: m1=14.5, Dia.=0.0', DC=9, 60 cm reflector (407x)

Clear skies!

Sandor Szabo

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Colin James Watling

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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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