Charts-info Astrosite Groningen (June 28, 2017)

Dear comet observers,

We have prepared the following new chart:    C/2015 V2 (Johnson):

- a 6x8 degrees chart for the period 29 June - 5 July 2017

This is now available in the charts section of our homepage at:

http://www.shopplaza.nl/astro    Reinder Bouma/Edwin van Dijk

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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/

Fwd: [CometObs] Digest Number 3280

Comet Observations Group

3 Messages

Digest #3280

1

Comet Observations 26th June 2017 by "Bomber2 Panther" outbackmanyep

2

Comet V-OBS (2017 June 26-27): 41P, C/2015 ER61, C/2015 V2 by biely.marek

3a

C/2015 V2 by danilam130

Messages

1

Comet Observations 26th June 2017

Mon Jun 26, 2017 8:29 pm (PDT) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 26th June 2017

C/2015 V2 Johnson
2017 Jun 26.50 UT; m1= 8.1; Dia= 13'; DC= 3/4; 7x50 B [Chris Wyatt, Moonbi, NSW, Australia]
Coma diffuse, slight brightening to centre.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK

65P/ Gunn
2017 Jun 26.51 UT; m1= 14.0; Dia= 0.8'; DC= 2; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ

41P/ Tuttle – Giacobini - Kresak
2017 Jun 26.52 UT; m1= 11.5; Dia= 4.5'; DC= 2; 25cm L, f:5 (x39) [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 Jun 26.52 UT; m1= 13.5; Dia= 0.8'; DC= 1/2; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse, faint. Low altitude = 16.6°.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ

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2

Comet V-OBS (2017 June 26-27): 41P, C/2015 ER61, C/2015 V2

Tue Jun 27, 2017 10:18 am (PDT) . Posted by:

biely.marek

My visual observation from the previous night:

41P/Tuttle-Giacobini-Kresák:
2017 June 26.88 UT: m1=[10.6, Dia.=3', 20x80 binoculars, NEGATIVE
[Already not visible. Fainter than 10.6 mag.]

C/2015 ER61 (PanSTARRS):
2017 June 27.04 UT: m1=[8.7, Dia.=5', 20x80 binoculars, NEGATIVE
[Still too low to be seen. Fainter than 8.7 mag.]

C/2015 V2 (Johnson):
2017 June 26.87 UT: m1=8.2, Dia.=10', DC=5, 20x80 binoculars
[Still also a hint of tail visible.]

Nice day to everybody!
Marek Biely, Czech Republic, Brno (244 m.a.s.l.)

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3a

C/2015 V2

Tue Jun 27, 2017 1:50 pm (PDT) . Posted by:

danilam130

Hi all

C/2015 V2:
2017 Jun. 27.84 UT: m1=8.3, Dia.=5.9', DC=4, ...25-cm L (42x, 70x) ...Danil Sidorko (Korenovsk, Russia) [SQM = 20.22]

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Good Clear Skies

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Astrocomet

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Colin James Watling

--

Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)

--

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

--

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)

--

Lyra Main Website: http://www.lyra-astro.co.uk/

Fwd: [CometObs] Digest Number 3278

Comet Observations Group

2 Messages

Digest #3278

1

obs-v : c/2015 v2 johnson by cometas71

2

Comet Observations 24th June 2017 by "Bomber2 Panther" outbackmanyep

Messages

1

obs-v : c/2015 v2 johnson

Sun Jun 25, 2017 3:00 am (PDT) . Posted by:

cometas71

Hi all , my visual observation tonight :


C/2015 V2 JOHNSON


2017 Jun. 24.86 UT : m1= 9.5 (S) , dia=6' , DC = 3 , x97 , L-30.5 cms......... J.P.Navarro Pina ( Puerto de la Cadena , Murcia , Spain.



Regards .

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2

Comet Observations 24th June 2017

Sun Jun 25, 2017 5:10 pm (PDT) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 24th June 2017

C/2015 V2 Johnson
2017 Jun 24.45 UT; m1= 8.3; Dia= 10.6'; DC= 3; 10x50 R [Chris Wyatt, Moonbi, NSW, Australia]
Coma diffuse, slight brightening to centre.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK

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• Privacy • Unsubscribe • Terms of Use

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Good Clear Skies

--

Astrocomet

--

Colin James Watling

--

Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)

--

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

--

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)

--

Lyra Main Website: http://www.lyra-astro.co.uk/

Fwd: [CometObs] Digest Number 3277

Comet Observations Group

2 Messages

Digest #3277

1

Comet Observations 22nd June 2017 by "Bomber2 Panther" outbackmanyep

2

Observations Jun 16 - Jun 22 by "Thomas Lehmann" ewelot

Messages

1

Comet Observations 22nd June 2017

Thu Jun 22, 2017 11:44 pm (PDT) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 22nd June 2017

C/2015 V2 Johnson
2017 Jun 22.46 UT; m1= 7.7; Dia= 13'; DC= 3; 7x50 B [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, slight brightening to centre.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK

65P/ Gunn
2017 Jun 22.47 UT; m1= 13.9; Dia= 0.8'; DC= 2; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Very diffuse.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ

71P/ Clark
2017 Jun 22.48 UT; m1= 10.4; Dia= 3.1'; DC= 5/6; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Inner coma opaque, sometimes stellar at centre, outer coma fanned to the NW approximately. Centre enhances slightly in Swan Band filter.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ

41P/ Tuttle – Giacobini - Kresak
2017 Jun 22.74 UT; m1= 11.1; Dia= 3.5'; DC= 2/3; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Close to star.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ

29P/ Schwassmann – Wachmann 1
2017 Jun 22.75 UT; m1= 13.5; Dia= 1'; DC= 2; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Diffuse patch of light, slightly brighter in centre.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ

217P/ LINEAR
2017 Jun 22.75 UT; m1= 13.3; Dia= 0.8'; DC= 5/6; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, opaque with small central condensation, almost stellar. Slightly elongated to the South-East approximately.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ

C/2015 ER61 PanSTARRS
2017 Jun 22.76 UT; m1= 9.3; Dia= 4.1'; DC= 5; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Faint tail visible, 10.5' in length in P.A. 260°; Coma dims slightly in Swan Band filter. Inner coma appears elongated to the South-West approximately, Fragment B just noticeable as a diffuse smudge behind the central condensation in the coma. Magnitude refers to total combined light of the pair.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK

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2

Observations Jun 16 - Jun 22

Fri Jun 23, 2017 1:37 pm (PDT) . 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 06 22.43 C 9.2 TK 10.6R 5a600 15 0.9 258 LEHaa 17.7 CCD/G remote (Mayhill)

2015V2 2017 06 18.92 C 7.7 TK 07.5A 4B558 28 0.8 346 LEHaa 19.4 DSLR green, plasma tail 0.6 deg at pa=127

2016M1 2017 06 17.33 C 15.6 TK 10.6R 5a960 1.2 LEHaa 19.3 CCD/G remote (Mayhill), moon 52% dist 88deg

2 2017 06 19.68 C 13.2 AQ 40.0L 4a600 7 LEHaa 18.8 CCD/G remote (SSO), moon 27% dist 53deg

41 2017 06 16.27 C 9.6 TK 10.6R 5a720 20 LEHaa 18.8 CCD/G remote (Mayhill)
41 2017 06 21.65 C 10.4 TK 10.6R 5a720 14 LEHaa 17.9 CCD/G remote (SSO)

71 2017 06 21.49 C 9.2 TK 10.6R 5a600 21 LEHaa 19.0 CCD/G remote (SSO)

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Good Clear Skies

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Astrocomet

--

Colin James Watling

--

Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)

--

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

--

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)

--

Lyra Main Website: http://www.lyra-astro.co.uk/

[BAA-ebulletin 00977] Storm on Neptune

BAA electronic bulletin

On 2017 June 10, Australian amateurs Darryl Milika and Pat Nicholas imaged a bright spot in Neptune's northern hemisphere. They used a C14 Schmidt-Cassegrain, with IR, R, G and B filters.
A series of images taken from 19:45 UT until 21:02 UT showed the spot moved with the rotation of the planet.
Further observations are urgently required to see if this storm persists.

Mike Foulkes. Saturn, Uranus and Neptune Section director

BAA-ebulletin mailing list visit:
http://lists.britastro.org/mailman/listinfo/baa-ebulletin
(c) 2017 British Astronomical Association    http://www.britastro.org/

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Good Clear Skies

--

Astrocomet

--

Colin James Watling

--

Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)

--

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

--

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)

--

Lyra Main Website: http://www.lyra-astro.co.uk/

Fwd: [CometObs] Digest Number 3272

Comet Observations Group

2 Messages

Digest #3272

1

C/2015V2 Johnson by "willian souza" williansouza

2.1

C/2015ER61 PANSTARRS by "willian souza" williansouza

Messages

1

C/2015V2 Johnson

Mon Jun 5, 2017 7:16 am (PDT) . Posted by:

"willian souza" williansouza

C/2015V2 Johnson

CometObs at yahoogroups.com
icqbr at yahoogroups.com
jdsh at bas.ac.uk
orodeno2 at yahoo.es

IIIYYYYMnL YYYY MM DD.DD eM mm.m:r AAA.ATF/xxxx &dd.ddnDC &t.ttmANG ICQ XX*OBSxx
2015V2 2017 06 02.89 S 8.0:TK 10.0R5 34 ICQ XX SOU01
2015V2 2017 06 03.89 S 8.0:TK 10.0R5 34 ICQ XX SOU01
2015V2 2017 06 04.89 S 8.0 TK 10.0R5 34 ICQ XX SOU01

cometas.liada at gmail.com
jpab at regmurcia.com

C/2015V2 Johnson
2017 June 02.89UT: m= 8.0:, 10cm-R @34x...Willian Souza (Sao Paulo, Brazil);
2017 June 03.89UT: m= 8.0:, 10cm-R @34x...Willian Souza (Sao Paulo, Brazil);
2017 June 04.89UT: m= 8.0, 10cm-R @34x...Willian Souza (Sao Paulo, Brazil);

icq at cfa.harvard.edu
icqcsc at eps.harvard.edu
C/2015V2 Johnson
Total magnitude and coma diameter estimates:
2017 June 02.89,8.0: (W. Souza, Sao Paulo, Brazil, 0.10m Refractor);
2017 June 03.89,8.0: (W. Souza, Sao Paulo, Brazil, 0.10m Refractor);
2017 June 04.89,8.0 (W. Souza, Sao Paulo, Brazil, 0.10m Refractor);

http://www.rea-brasil.org/cometas - HP de Cometas/REA

C/2015V2 Johnson
DD.DD M m.m dia. DC cc.c ANG Ins. Ax Observador, Sítio
2017 Junho
02.89 S 8.0: 10cm-R @34x Willian Souza, Sao Paulo, Brasil
03.89 S 8.0: 10cm-R @34x Willian Souza, Sao Paulo, Brasil
04.89 S 8.0 10cm-R @34x Willian Souza, Sao Paulo, Brasil

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2.1

C/2015ER61 PANSTARRS

Mon Jun 5, 2017 7:31 am (PDT) . Posted by:

"willian souza" williansouza

C/2015ER61 PANSTARRS

CometObs at yahoogroups.com
icqbr at yahoogroups.com
jdsh at bas.ac.uk
orodeno2 at yahoo.es

IIIYYYYMnL YYYY MM DD.DD eM mm.m:r AAA.ATF/xxxx &dd.ddnDC &t.ttmANG ICQ XX*OBSxx
2015ER612017 06 02.32 S 8.5:TK 10.0R5 34 ICQ XX SOU01

cometas.liada at gmail.com
jpab at regmurcia.com

C/2015ER61 PANSTARRS
2017 June 02.32UT: m= 8.5:, 10cm-R @34x...Willian Souza (Sao Paulo, Brazil);

icq at cfa.harvard.edu
icqcsc at eps.harvard.edu

C/2015ER61 PANSTARRS
Total magnitude and coma diameter estimates:
2017 June 02.32,8.5: (W. Souza, Sao Paulo, Brazil, 0.10m Refractor);

http://www.rea-brasil.org/cometas - HP de Cometas/REA

C/2015ER61 PANSTARRS
DD.DD M m.m dia. DC cc.c ANG Ins. Ax Observador, Sítio
2017 Junho
02.32 S 8.5: 10cm-R @34x Willian Souza, Sao Paulo, Brasil

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Good Clear Skies

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Astrocomet

--

Colin James Watling

--

Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)

--

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

--

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)

--

Lyra Main Website: http://www.lyra-astro.co.uk/