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Saturday, 24 June 2017

Fwd: [CometObs] Digest Number 3277

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

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

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)




--
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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/

Wednesday, 14 June 2017

[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/

-- 
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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/

Wednesday, 7 June 2017

Fwd: [CometObs] Digest Number 3272

2 Messages

Digest #3272
1
C/2015V2 Johnson by "willian souza" williansouza
2.1
C/2015ER61 PANSTARRS by "willian souza" williansouza

Messages

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

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




--
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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/

Wednesday, 31 May 2017

Charts-info Astrosite Groningen (May 31, 2017)

We have prepared the following new chart for our homepage:
C/2015 ER61 (PANSTARRS):-a 6x8 degrees chart for the period 2 - 12 June 2017
This new chart is now available in the charts section of our  mainpage at:
http://www.shopplaza.nl/astro    Reinder Bouma/Edwin van Dijk

-- 
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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/

Sunday, 28 May 2017

Fwd: [CometObs] Digest Number 3266

4 Messages

Digest #3266
1
Comet Observations 26th May 2017 by "Bomber2 Panther" outbackmanyep
2
Comet Observations *Correction* 26th May 2017 by "Bomber2 Panther" outbackmanyep
3a
41P, C/2015 V2 by danilam130
4
Comet Observations 27th May 2017 by "Bomber2 Panther" outbackmanyep

Messages

Sat May 27, 2017 4:17 am (PDT) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 26th May 2017

C/2015 V2 Johnson
2017 May 26.48 UT; m1= 7.6; Dia= 12.1'; DC= 4; 7x50 B [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, gradual brightening to centre, coma extended to the NW approximately.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK

65P/ Clark
2017 May 26.50 UT; m1= 13.7; Dia= 0.9'; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ

71P/ Clark
2017 May 26.51 UT; m1= 11.1; Dia= 1'; DC= 5/6; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, bright central condensation, sometimes stellar. Coma appears larger at lower magnification.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ

Sat May 27, 2017 4:23 am (PDT) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 26th May 2017 (Correction to 65P, as per below, should read 'Gunn' not 'Clark', apologies for the inconvenience)

C/2015 V2 Johnson
2017 May 26.48 UT; m1= 7.6; Dia= 12.1'; DC= 4; 7x50 B [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, gradual brightening to centre, coma extended to the NW approximately.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK
 
65P/ Gunn
2017 May 26.50 UT; m1= 13.7; Dia= 0.9'; DC= 1; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma very diffuse.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
 
71P/ Clark
2017 May 26.51 UT; m1= 11.1; Dia= 1'; DC= 5/6; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, bright central condensation, sometimes stellar. Coma appears larger at lower magnification.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ
 


Sat May 27, 2017 2:02 pm (PDT) . Posted by:

danilam130

Hi all!


VIS:
41P:

2017 May 27.86 UT: m1=9.8, Dia.=4', DC=2/, ...25-cm L (42x, 70x, 150x) ...Danil Sidorko (Korenovsk, Russia) [SQM = 20.51]


C/2015V2:








2017 May. 27.85 UT: m1=7.8, Dia.=5.4', DC=4, tail 8' in RA 315 ...25-cm L (42x, 70x) ...Danil Sidorko (Korenovsk, Russia) [SQM = 20.51]


Sat May 27, 2017 5:42 pm (PDT) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 27th May 2017

C/2015 V2 Johnson
2017 May 27.42 UT; m1= 7.5; Dia= 15'; DC= 4; 7x50 B [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, opaque centre, moderately condensed. Coma extended to NW approximately.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK




--
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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/

Saturday, 27 May 2017

Fwd: [CometObs] Digest Number 3265

2 Messages

Digest #3265
2
C/2015 ER61, C/2015 V2, 41P, 71P. by "Juan José González Suárez" jjgsgp

Messages

Fri May 26, 2017 6:22 am (PDT) . Posted by:

scholten0dcs

2017 05 25.96 m = 7.3 (coma 18' DC=7) in 8x56B
Eerbeek (Netherlands)
Alex Scholten

Fri May 26, 2017 1:45 pm (PDT) . Posted by:

"Juan José González Suárez" jjgsgp

C/2015 ER61 (PANSTARRS):
2017 May 24.12 UT: m1=7.9, Dia.=4', DC=5, 25x100B.
[ In 20 cm SCT(77x): tail 0.4-deg in PA 260 deg.
Beginning of astronomical twilight. Sidgwick method.
Tycho-2 comparison stars. Altitude: 9 deg. SQM : 20.8.
Mountain location, very clear sky.].

C/2015 V2 (Johnson ):
2017 May 24.01 UT: m1=7.1, Dia.=15', DC=4/,
Tail: 0.5 deg. in PA 320 deg, 12x45 monocular.
[ The comet shows a much wider coma diameter, providing
a brighter m1 estimate in comparison with my previous
May 3.12 observation; there is also a lesser influence of
the inner dust tail on the magnitude estimate. Sidgwick method.
Tycho-2 comparison stars. SQM : 21.5 at zenith.].

41P/Tuttle-Giacobini-Kresak:
2017 May 24.09 UT: m1=7.8, Dia.=9', DC=2, 8 cm R (20x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 21.5 at zenith.].

71P/Clark:
2017 May 24.02 UT: m1=11.2, Dia.=2.2', DC=3/, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 21.2.].

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

---------------------------------------------------
ICQ Format :

2015ER612017 05 24.12 S 7.9 TK 10.0B 25 4 5 ICQ
XX GON05

2015V2 2017 05 24.01 S 7.1 TK 4.5R 12 15 4/ 0.5 320 ICQ
XX GON05

41 2017 05 24.09 S 7.8 TK 8.0R 20 9 2 ICQ
XX GON05

71 2017 05 24.02 S 11.2 TK 20.3T10 100 2.2 3/ ICQ
XX GON05
---------------------------------------------------

J. J. Gonzalez

---------------------------------------------------


-- 
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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/

Charts-info Astrosite Groningen (May 26, 2017)

We have prepared the following new charts for our homepage:
41P/Tuttle-Giacobini-Kresak:- a 3.6x4.8 degrees chart for 
the period 28 May - 2 June 2017
C/2015 V2 (Johnson):- two 6x8 degrees charts for the period
27 May - 7 June 2017
These new charts are now available in the charts section of
our  mainpage at: http://www.shopplaza.nl/astro
Reinder Bouma/Edwin van Dijk

--   
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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 00976] NLC sighting

BAA electronic bulletin

NLC Alert

The first sighting of the season was made by Adrien Mauduit from Denmark last night
(25/ 26 May 2017). The AIMS satellite is unable to provide data for at least 2 weeks 
so we are relying on ground based observers to report any sightings and hopefully
we will have some clear skies in the coming days.

Any reports please to - sandra-b@hotmail.co.uk<mailto:sandra-b@hotmail.co.uk>


Cheers

Sandra Brantingham

Aurora and NLC director

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

-- 
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
--
--
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/