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PostPosted: 16. January 2008, 09:09:11 AM 
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Hi WR140-Gang! Today I had the following message from Tony Moffat in Montréal in my mail box.
Quote:
Hi Thom:

Just wondering if you received my last email.... It would be very useful, especially now and until about mid February, to try observing WR140, in anticipation for next year at this same time. If we can't get any good spectra in Dec 2008 - Feb 2009, then there's no use. Observing from March through November is much easier, of course, but alone, such data will be relatively uninteresting, as you know. So: Are the German amateurs busy getting spectra NOW? I hope so!

Last time I was talking by telecon to my colleagues, they seemed to want to have the email addresses of people getting spectra in Germany. Would that be possible (or even useful)? I know that you are in contact with them and there is the Web site, but there's nothing like direct contact...

Take it easy.... but take it!

Thon
I would recommend to transfer email adresses to the professionals but I can not do it without permission. So, who is willing to pass it please give me a message and I pass it on.

Cheers, Thomas


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PostPosted: 16. January 2008, 09:37:12 AM 
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Hallo Thomas,

ich muß mal auf Deutsch antworten:

natürlich kannst Du dort meine emailadresse bekannt geben.

Das Wetter ist schlecht...eigentlich hatte ich für dieses Mal die Beobachtung
am wr 140 eigestellt.....ich denke, ich weiß wie es geht und jetzt sieht man
ja nicht Besonderes, wie all meine Spektren zeigen. Hast du die Helden in
Montreal auf die Datenbank, die wir bei Otmar haben hingewiesen. Da stehen
allmeine WR Spektren.

Du hast ja mit bekommen, dass mein Spektrograph falsch zusammengebaut war.(
Das war nicht ich, sondern Lothar..:-)...der hatte seinen vor mir
zusammengeschraubt und da dachte ich, soll er meinen auch zusammenbauen, dann
brauche ich nicht so viel zu denken und dann hat er eben bei mir die Linse
falsch eingebaut und bei seinem richtig.....durch Zufall!)

Ich werde vielleicht, wenn das überhaupt noch geht, Wr 140 nochmal ansehen,
aber wenn das Wetter so weitermacht, dann habe ich keine Chance mehr......


Berthold


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PostPosted: 16. January 2008, 10:32:39 AM 
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Quote:
und dann hat er eben bei mir die Linse
falsch eingebaut und bei seinem richtig.....durch Zufall!)
Na Berthold, ob das wirklich Zufall war? :roll:

mit sternig fröhlichem Gruß
Lothar


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PostPosted: 16. January 2008, 10:33:08 AM 
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Hallo Berthold!

Yes, this bloody weather...:evil:

OK, I will send your email adress to Montréal. Tony already said that WR 140 is reasonably detectable for only 30 minutes during extreme times (about end of January). So everybody should try it now for hard training.

Und noch ganz wichtig: Du machst das völlig richtig. Lothar ist schuld, es war klar an ihm, sich um Deinen korrekten Einbau zu kümmern. Das ist mit Klaus genauso, wenn bei mir ein Fehler auftaucht ist er schuld, und ich habe dann die Blamage... 8-) Mein herzliches Beileid! :-*

Gruss, Thomas :D

PS: Ich komme immer noch nicht in die Datenbank. Otmar, liegt das Problem bei mir oder bei Dir?


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PostPosted: 16. January 2008, 10:35:17 AM 
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Quote:
natürlich kannst Du dort meine emailadresse bekannt geben.
Hi Thomas,

meine auch.

Gruß
Lothar


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PostPosted: 16. January 2008, 10:37:32 AM 
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Hallo Thomas,

Thomas Eversberg wrote:
Quote:
PS: Ich komme immer noch nicht in die Datenbank. Otmar, liegt das
Problem bei mir oder bei Dir?
Bei mir läuft eigentlich alles, und die Datenbank wird auch aufgerufen.
Was passiert denn bei Dir und hat sonst noch jemand Probleme damit?

Herzliche Grüße,
Otmar


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PostPosted: 16. January 2008, 10:50:43 AM 
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Hi Otmar,

hier ist ein Screenshot.

Gruss, Thomas


Attachments:
database.jpg
database.jpg [ 1017.08 KiB | Viewed 8781 times ]
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PostPosted: 16. January 2008, 11:07:59 AM 
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Hallo Thomas,

Thomas Eversberg wrote:
Quote:
Hi Otmar,

hier ist ein Screenshot.
Kann ich nicht nachvollziehen. Kann es sein, dass die DLR-Firewall (oder
ein Proxy) port 8000 blockt? Sonst kann ich mir das nicht erklären.

P.S.

Der Link, auf der VDS-Seite, unter:

http://stahl.homelinux.org:8000/otmar/s ... %20Schanne

führt übrigens zur falschen Seite.

Herzliche Grüße,
Otmar


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PostPosted: 16. January 2008, 11:13:20 AM 
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Quote:
und hat sonst noch jemand Probleme damit?
Hallo Otmar und Thomas,

ich gehe praktisch täglich in die Datenbank und hatte bisher kein einziges Mal Probleme damit.

Gruß
Lothar


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PostPosted: 16. January 2008, 11:14:21 AM 
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Quote:
Kann es sein, dass die DLR-Firewall (oder
ein Proxy) port 8000 blockt? Sonst kann ich mir das nicht erklären.
Bingo, das ist es wahrscheinlich. Habe gerade über meinen Laptop und unser WLAN die Seite erfolgreich aufgerufen. Muss mich darum kümmern.

Gruss, Thomas

PS: Der Linkj war von Dir. Wie soll ich den ändern?


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PostPosted: 16. January 2008, 11:21:18 AM 
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Hello Thomas and all,

Although I'm not German, you may send my mail. Weather here did not allow observations. I'm negotiating telescope time in an observatory equiped with a C14 (3 consecutive nights per month) in order to proceed with our collaboration. I expect to access it from February.

Best regards
Jose


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PostPosted: 16. January 2008, 11:54:11 AM 
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Great, José, I don't have your email yet but you can send it to the Webmaster at our web site.

Bye, Thomas


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PostPosted: 16. January 2008, 12:33:22 PM 
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Quote:
Quote:
und dann hat er eben bei mir die Linse
falsch eingebaut und bei seinem richtig.....durch Zufall!
Na Berthold, ob das wirklich Zufall war? :roll:
nein, ich wollte das nicht so sagen, aber ich weiß natürlich auch, dass Du das
extra so gemacht hast, weil Du bessere Spektren machen wolltest, als ich das
kann.....:-D [ so ein Quatsch!!]

berthold


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PostPosted: 16. January 2008, 14:27:46 PM 
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Quote:
PS: Der Link war von Dir. Wie soll ich den ändern?
Hallo Thomas,

der Link führt nicht dorthin, wo er sollte, da die "href" falsch gesetzt ist:
Code:
<a href="http://address-protector.com/jdjcKHDhe7Zevj8adRg25_UW_jRDb_MGbeZxnVI_3CnmQ_Q3oE5mrvBX1oZHD48P" target="main" class="menulink12">
http://stahl.homelinux.org:8000/otmar/specdb/observer.php?instrument=HIRES,%20Lothar%20Schanne
</a>
Gruss, Peter


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PostPosted: 16. January 2008, 14:35:47 PM 
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Ah, stimmt!!! Danke, Peter! Habe ich gerade geändert, jetzt läuft's.


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PostPosted: 16. January 2008, 16:25:22 PM 
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Quote:
I would recommend to transfer email adresses to the professionals but I can not do it without permission. So, who is willing to pass it please give me a message and I pass it on.

Cheers, Thomas
Hi Thomas,

Please pass my email address on. I am sure I can get good spectra if I have good weather. Because I am further north I can expose for much longer than 30 mins. I took a spectrum in twilight on 6th Jan but only for 10 min before the clouds returned. It still had a SN of about 40 though.

Also I have added my photograph as an avatar so you will know me in Heidelberg :D


Best Wishes
Robin


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PostPosted: 16. January 2008, 16:36:25 PM 
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Yes, Robin, a pic is always a good idea...not to miss you in Heidelberg. :D
I have seen your spectrum in the dadabase. We realy benefit from it...thanks Otmar!


Here are my two messages to Tony Moffat:
Quote:
Hi Chiefony!

Yes, I got your email and, of course, I made regular announcements that the gang should observe NOW! I am fully aware of the situation and a bit frustrated that Klaus and me can’t try because of a new CCD and a non-stable set-up until now. I placed your very last email into the forum again and asked for permission to pass email addresses. I presume that I will have them soon (what do you pay for one…he, he, he). But in fact, why does nobody (who is it?) goes into the forum directly. Otmar Stahl, Anatoly Mirochnishenko, Thomas Rivinius and Andreas Kaufer are also registered and discuss. We use this very useful tool for direct interaction and it works fine. And finally, English is no problem…just check it out: http://spektroskopie.fg-vds.de/forum/

Bis bald, Thomas
Quote:
Me again!

Her are the Email adresses from our WR 140 gang:

José Ribeiro (Portugal) - #email#
Lothar Schanne (Germany) – #email#
Berthold Stober (Germany) – #email#
Robin Leadbeater (United Kingdom) - #email#

Check out our database which contains a number of spectra. Otmar Stahl just started with it (he is responsible) but there are already a number of spectra. You find the link “database” in our web site at http://spektroskopie.fg-vds.de/

We do the best possible but the weather is a serious problem.

Cheers, Godzilla


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PostPosted: 16. January 2008, 17:46:47 PM 
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...and here is the last answer I got today:
Quote:
OK, great - thanks!

I checked the web site and, assuming people do upload their spectra promptly after observing, I didn't see
any spectra after Dec 29, 2007! I wouldn't say that such spectra next year would be useless, but we need many more spread out evenly over time. It's around periastron that we actually need the densest time coverage, not the sparsest! Anyway, I do understand that the weather (especially in central/northern Europe) is a problem, so that's why I am also getting people in India, US, even DAO, involved. But we also need more photometry around and after periastron. That would be simpler than spectrosocopy. Do you know people who can do that? And of course, broadband polarimetry (or even spectropolarimetry!) would be wonderful....? Karen Bjorkman is going to try to help us out there. But we need sevral observatories to cover our ":asses", as they say. Not me, they.

Cheers, T


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PostPosted: 16. January 2008, 18:22:16 PM 
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Quote:
...and here is the last answer I got today:
But we also need more photometry around and after periastron. That would be simpler than spectrosocopy. Do you know people who can do that? And of course, broadband polarimetry (or even spectropolarimetry!) would be wonderful....?
Hi Thomas,

sprich doch den Jeff Hopkins in Arizona an. Please contact Jeff Hopkins in Arizona.

Lieber Gruß
Lothar


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PostPosted: 16. January 2008, 19:30:05 PM 
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Quote:
...and here is the last answer I got today:
ok , I will try to get some new spectra from wr140 as soon as the weather will
be better......

cheers
Berthold


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PostPosted: 17. January 2008, 09:54:17 AM 
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Hi Lothar,
Quote:
Please contact Jeff Hopkins in Arizona.
das haben Tony und ich schon gemacht. Aber danke für den Hinweis, es gibt eigentlich kaum Photometriker bei den Amateuren.

Gruss, Thomas


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PostPosted: 21. January 2008, 09:52:42 AM 
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Hi WR gang!

Just for information to everybody: Tony Moffat sent the attached email to all participants of our WR 140 campaign (Lothar: Your email was wrong but I corrected that and I assume he will send it again).

I believe we are now I very serious business and need do make our contribution.

Cheers, Thomas
Quote:
Dear WR140 afficionados (Robin, UK; Jose, Portugal; Lothar & Berthold, Germany):

Please allow me to express my extreme gratitude to all of you for offering to participate in an international
campaign on this star in which I am involved with 6 other professional astronomers. We met last October
at ESA near Madrid for 3 days to iron out a strategy. I mentioned to them (via Thomas Eversberg's wonderful source of information) that you as amateurs are keenly invoved. This was viewed with great enthusiasm by all.

A few days ago, Thomas forwarded to me another excellent spectrum that Robin took. This is very important,
because this time next year will be the most critical period, i.e. close to periastron passage, when the HeI
5876 line shows an excess emission (only about 10% of the underlying intensity) component arising in the enhanced shock cone due to the colliding winds between the stellar pair. According to the
previous periastron passage in Feb 2001, this excess is only visible for about 2 months, centered on about 2 weeks after periastron passage. Ideally, we need almost daily monitoring in spectroscopy from early December 2008 through end of February 2009, with less frequent monitoring before and after those dates. This makes it
very tough, as you know, for 2 reasons: northern climates are not the best at this time of year and the star
is difficult to observe then, since it is normally a summer object (Cygnus). But this challenge makes it all the
more fun in a sense! It is also why I have contacted several observatories around the world (India, US, Canada)
to increase the chances of getting good coverage. Of course, it would be best with one single instrument, but
weather will more than likely prevent that from happening. If only there was a spectrograph in space available for 3-4 months of spectroscopic monitoring!

BTW if any of you can also observe the very strong HeI 10830A line, that would be great. Most CCDs are nearly dead at those wavelengths, but at larger telescopes, it is possible to get it, if one does not have a NIR spectrograph.

Presently, we are about 6 months away from the point in time when WR140 culminates in the sky in the middle of the night. I.e., it is the worst time now! However, it also means that one can observe it twice per night, once
at the very beginning and again at the very end of the night. In a week or two, it will only be observable at the end of the night (just as a couple of weeks ago it was only observable at the beginning). This makes for another inconvenient challenge, i.e. staying up all night or getting up early enough to check for clear skies and then observing it. But I hope you will consider doing this. This year is a good time to practise, to see if it will work
next year, when it really counts between Dec 2008 and Feb 2009.

If you have any questions or comments, please do not hesitate to ask, preferably using the "reply all" button.

All the best,

Tony Moffat
Département de physique
Université de Montréal
C.P. 6128, Succursale Centre-Ville
Montréal, QC, H3C 3J7, Canada


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