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Teide 2013 WR campaign https://forum.vdsastro.de/viewtopic.php?t=3978	Seite 8 von 10

Autor:

Robin Leadbeater [ 17. Juli 2013, 13:04:00 PM ]

Betreff des Beitrags:

Teide 2013 WR campaign

Sorry, I misunderstood. I thought this was WR134 but I see it is Altair. It is very noisy. you should be able to get a very high SNR on Altair. Here is one of my spectra of the telluric standard Zet Aql for example. What exposure are you using and how many counts are you getting?

Robin

----- Original Message ----- From: Robin Leadbeater (robin@threehillsobservatory.co.uk)
To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)
Sent: Wednesday, July 17, 2013 11:51 AM
Subject: Re: [fg-spek] Re: Teide 2013 WR campaign

Hello Dong,

Are you sure you are at the right wavelength? Here are my results from 20130712 and 20130715 for comparison

Cheers
Robin

----- Original Message ----- From: Dong Li (fg-spek-convento@vds-astro.de)
To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)
Sent: Wednesday, July 17, 2013 6:36 AM
Subject: [fg-spek] Re: Teide 2013 WR campaign

Hi friends:

Here are my fresh results of WR134 last night.

Instrument Response is made by Altair at 5411A.

Happy to recieve your comments. Bild

Dong

Dateianhänge:

zetaql_5400_20130713_necal_cosm.png [ 8.55 KiB | 31788 mal betrachtet ]

Autor:	Berthold Stober [ 17. Juli 2013, 13:13:02 PM ]
Betreff des Beitrags:
Nice indeed Robin, what is the pink and what is the blue emission line? I created last night two spectra from WR 135 and 137. They have stronger lines in this wavelength range as WR134........but I'll trie to take it this night, if possible...... cheers Berthold

Autor:	Robin Leadbeater [ 17. Juli 2013, 13:31:07 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Berthold, They are both WR134 (HeII at 5411A). Blue is 20130712 Pink is 20120715. There are big changes in in this line with WR134 ! The blue exposure was a 1 hour. The pink exposure was only 20min in excellent conditions (but cut short by cloud as a front moved in) The SNR was still 130 though Cheers Robin ----- Original Message ----- From: Berthold Stober (fg-spek-convento@vds-astro.de) To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Sent: Wednesday, July 17, 2013 12:13 PM Subject: [fg-spek] Re: Teide 2013 WR campaign Nice indeed Robin, what is the pink and what is the blue emission line? I created last night two spectra from WR 135 and 137. They have stronger lines in this wavelength range as WR134........but I'll trie to take it this night, if possible...... cheers Berthold

Autor:

Daniel Verilhac [ 18. Juli 2013, 09:03:08 AM ]

Betreff des Beitrags:

Teide, night of july 17 to 18

Hello!

Yesterday I was

this night I was

I hope tomorrow I will be

... when Fovia will be back

I had no time to rename files, I'm alone since 3 nights and I have to manoguide.

Today, I will try to rename files and send them to Montréal.

Now it's time to sleep

daniel

Dateianhänge:

Dateikommentar: Time to go to bed !

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Autor:

Dong Li [ 18. Juli 2013, 15:22:08 PM ]

Betreff des Beitrags:

Hi Robin:

Altair: single shot is 1s exposure, 6 photoes.
zet-aql: single shot is 60s exposure, 6 photoes.

If the single exposure time for altair is too short???

And when I take altair, it is cloudy. Clouds are like a veil surrounding altair. The environmental humidity is 110~ very wet, almost oversaturated.

Dong

Dateianhänge:

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Autor:	Ulrich Waldschlaeger [ 18. Juli 2013, 21:18:52 PM ]
Betreff des Beitrags:
Hello, respect for your lonely fight, Daniel! Just for entertainment between, my time elapse video from our night last Friday. At the end of the video, the dome malfunction on the way to the calibration stars. http://www.youtube.com/watch?v=ycTf3upn ... e=youtu.be Please select 1080p HD for quality! CS! Ulrich

Autor:	Robin Leadbeater [ 19. Juli 2013, 03:38:30 AM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hello Dong, If 1 sec is the maximum time for Altair without saturating then I would recommend adding more exposures to stop the risk of variations due to scintillation. A minumum of 30 seconds total exposure perhaps. I am hoping to use the Zet Aql for instrument response correction if I can find a good reference spectrum. Cheers Robin ----- Original Message ----- From: Dong Li (fg-spek-convento@vds-astro.de) To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Sent: Thursday, July 18, 2013 2:22 PM Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Robin: Altair: single shot is 1s exposure, 6 photoes. zet-aql: single shot is 60s exposure, 6 photoes. If the single exposure time for altair is too short??? And when I take altair, it is cloudy. The clouds are veil surrounding altair. Dong

Autor:

Martin Dubs [ 19. Juli 2013, 10:12:34 AM ]

Betreff des Beitrags:

Hello Robin, Dong Li,

for the instrument response with zet Aql I have used a reference spectrum from NOAO of zet Aql (see below).
http://www.noao.edu/cflib/
The data are then found in:
http://www.noao.edu/cflib/V1/TEXT/
For faster finding of the relevant spectra I extracted the data table into an EXCEL file. It can be searched and filtered (column J) according to your needs. I selected the brightest targets < 3 mag for my purpose and added common names.
Since the spectrum of zet Aql is well exposed after 60 sec, Altair with 2.3 magnitudes (factor 8 approx.) brighter should require an exposure time of 6 to 10 sec without overexposing. For checking the saturation you always have to look at the original image, not at the image after division by the flat. You should also set the visualization range to see the brightest part of the spectrum, e.g. 1000 to 60000 and then find the brightest area with the statistic to check for overrange. I always check with the variable weather conditions I have.

Regards, Martin

Dateianhänge:

Dateikommentar: NOAO reference spectrum
zet Aql HD177724_NOAO.fit [61.88 KiB]
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Dateikommentar: List of reference stars NOAO database
cflibdb_NOAO.zip [184.91 KiB]
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Autor:	Daniel Verilhac [ 22. Juli 2013, 00:44:55 AM ]
Betreff des Beitrags:
NEWS FROM TEIDE I'm despited... another night without observing.... The telescope is loosed in the sky.... and it is week-end.... We have cheked the system with the night assistant, it seems to have problem with cables who where crushed some weeks ago.... I have no autoguiding (Fovia has been removed to an other telescope) since one week... hand guiding is funny, but not for a long time.. The science camera works very bad, pictures are merged, or destroyed.. I'm not used to work like this.... even if some people says the opposite. I have also improved the setup, put the optical fiber in the good position (it'a FC connector) buy a new screen because I cannot "manoguide" and check the pictures on one screen. And I have to check every picture!! because of the camera (3 good on 7 ! ) That.... and the rest... (not science but human behaviour...) Daniel

Autor:	Noel Richardson [ 22. Juli 2013, 03:46:54 AM ]
Betreff des Beitrags:
We received a message today that FOVIA should be returned to the 0.8 m this week. The technician will be back tomorrow (Monday), and then hopefully we can proceed at Teide when the telescope is back online. The guider was removed to the 1.5 m telescope if I understand correctly. This seems pretty typical for observatories. Typically, when I have been to observatories where there are multiple telescopes, if something is versatile and used on multiple telescopes, it can be interchanged when something breaks. My best guess is that a guider on the larger scope broke, and the standard policy is to move it to a larger scope, where the observing run is much shorter than our four month run. The other guider will likely be fixed and the guiding and telescope will be fully back this week. We have had excellent weather at Megantic tonight and last night, so we are obtaining spectra here in Quebec while the 0.8m is down.

Autor:	Daniel Verilhac [ 22. Juli 2013, 05:42:37 AM ]
Betreff des Beitrags:
I know that Fovia is back home (since 4 days...) but it doesn't work, maybe it will be installed tomorrow or for Christmas .... The problem is that telescope is broken... because of people who have not ear the technicians, and take them for children! Result: no observation and a very cold atmosphere (I speak of human atmosphere) because of the behaviour of the team (s) before. I have to repair that, here people are sympatic and help us, but we have to be correct with them... It's not a holiday's camp!! We are here for science! What arrive in Megantic or Vatican don't interest me. It's what I'm trying to do here. I am here during my holidays, not in holidays. In twelve hours it will be monday, 16 o'clock.... Daniel

Autor:

Berthold Stober [ 22. Juli 2013, 12:47:35 PM ]

Betreff des Beitrags:

Hi Robin and others,

there you see the spectra I created at 210713........I cannot guide automatically WR134. I do not know why it is so, perhaps because the guider see three stars in the guiding window; I do not know, I guide with maximDL5.

At WR135 I get a S/N with Vspec from about 86 and with ISIS I see nearly 200. I aslo do not know, what could be the reason in this case.

cheers
berthold

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Autor:	Bernard Heathcote [ 22. Juli 2013, 14:52:50 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Berthold, I had a quick look at your WR134 and, over the short continuum range 5756A ?5763A, I measure a S/N of 177 with Vspec and 184 with ISIS. Cheers, Bernard From: Berthold Stober (fg-spek-convento@vds-astro.de) Sent: Monday, July 22, 2013 8:47 PM To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Robin and others, there you see the spectra I created at 210713........I cannot guide automatically WR134. I do not know why it is so, perhaps because the guider see three stars in the guiding window; I do not know, I guide with maximDL5. At WR135 I get a S/N with Vspec from about 86 and with ISIS I see nearly 200. I aslo do not know, what could be the reason in this case. cheers berthold No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3349 / Virus Database: 3204/6509 - Release Date: 07/21/13

Autor:

Berthold Stober [ 22. Juli 2013, 18:16:16 PM ]

Betreff des Beitrags:

here are the results from 130711 and 130716 of WR135

cheers berthold

Dateianhänge:

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Autor:

Robin Leadbeater [ 22. Juli 2013, 19:21:57 PM ]

Betreff des Beitrags:

Teide 2013 WR campaign

Hello Berthold,

You results look good. The SNR looks similar to mine. Here are comparisons between your results for 30130721 (blue) and mine for 20130720 (pink) I roughly normalised the pseudo-continuum using a linear fit through two points. The remaining differences in broad shape are due to small normalising errors, I think. There is an offset in wavelength of ~1A between the WR137 results. I think the error is in your result as the telluric lines appear in the right place in my spectrum.

Cheers
Robin

----- Original Message ----- From: Berthold Stober (fg-spek-convento@vds-astro.de)
To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)
Sent: Monday, July 22, 2013 11:47 AM
Subject: [fg-spek] Re: Teide 2013 WR campaign

Hi Robin and others,

there you see the spectra I created at 210713........I cannot guide automatically WR134. I do not know why it is so, perhaps because the guider see three stars in the guiding window; I do not know, I guide with maximDL5.

At WR135 I get a S/N with Vspec from about 86 and with ISIS I see nearly 200. I aslo do not know, what could be the reason in this case.

cheers
berthold

Dateianhänge:

wr135_blue_130721_stober_pink_130720_leadbeater.png [ 10.85 KiB | 31571 mal betrachtet ]

wr137_blue_130721_stober_pink_130720_leadbeater.png [ 11.14 KiB | 31571 mal betrachtet ]

Autor:	Robin Leadbeater [ 22. Juli 2013, 19:56:12 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Bernard, Berthold Berthold's bin size is also quite small compared with mine (0.2A = ~5bins/resolution, I bin my camera pixels x2 to give ~2.5 bins/resolution) so I think Berthold's SNR will easily meet the SNR >200 spec at 2 bins/resolution. Cheers Robin ----- Original Message ----- From: Bernard Heathcote (fg-spek-convento@vds-astro.de) To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Sent: Monday, July 22, 2013 1:53 PM Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Berthold, I had a quick look at your WR134 and, over the short continuum range 5756A ?5763A, I measure a S/N of 177 with Vspec and 184 with ISIS. Cheers, Bernard From: Berthold Stober (fg-spek-convento(==>)vds-astro.de ([email]fg-spek-convento(==>)vds-astro.de[/email])) Sent: Monday, July 22, 2013 8:47 PM To: fg-spek-convento(==>)vds-astro.de ([email]fg-spek-convento(==>)vds-astro.de[/email]) (fg-spek-convento(==>)vds-astro.de ([email]fg-spek-convento(==>)vds-astro.de[/email])) Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Robin and others, there you see the spectra I created at 210713........I cannot guide automatically WR134. I do not know why it is so, perhaps because the guider see three stars in the guiding window; I do not know, I guide with maximDL5. At WR135 I get a S/N with Vspec from about 86 and with ISIS I see nearly 200. I aslo do not know, what could be the reason in this case. cheers berthold

Autor:	Berthold Stober [ 22. Juli 2013, 20:09:16 PM ]
Betreff des Beitrags:
Hi Robin and others, thank you for reply and compare the spectra. Your are right asuming small callibration mistakes in my spectra....but over all the spectra are rather suitible to be compared each other..... Now I have a brake with observing , because I travel to scotland and I'll visite by the way endinborough too..... Cheers berthold

Autor:

Dong Li [ 24. Juli 2013, 07:29:21 AM ]

Betreff des Beitrags:

Hi Robin:

Last night it was sunny, and today it seems a same sunny night. I take 30s for Altair. Here are the results.

Dong

Dateianhänge:

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Autor:

Dong Li [ 25. Juli 2013, 05:23:01 AM ]

Betreff des Beitrags:

-------new results-------

Beijing time: 20130724~20130725

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Autor:	Robin Leadbeater [ 25. Juli 2013, 11:51:19 AM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Dong, They look good to me. You are definitely picking up changes. What total exposure are you using and what SNR are you getting (in the continuum around 5530-5550 for example) Cheers Robin ----- Original Message ----- From: Dong Li (fg-spek-convento@vds-astro.de) To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Sent: Thursday, July 25, 2013 4:23 AM Subject: [fg-spek] Re: Teide 2013 WR campaign -------new results------- Beijing time: 20130724~20130725

Autor:

Dong Li [ 25. Juli 2013, 16:33:40 PM ]

Betreff des Beitrags:

Hi Robin:

Please look at the attachments. For the continuum's SNR about 5530~5550, I take a middle one : 5540.

But I find a strange phenomenon with the FWHM function of ISIS:
when I put the yellow cursor, i.e., at 5550, which is double-clicked to become a black thick line, the showed value in [FWHM Tab] is a bit different from that value when the cursor is a yellow thin line.

5550.485----yellow thin line; after double-clicked, showing in Tab Position 5550.673. SNR=217.5

5549.974----yellow thin line; after double-clicked, showing in Tab Position 5549.463. SNR=135.8

because: 5550.485-5550=0.485; 5550-5549.974=0.026
so: 5549.974 is the most close position to 5550.
but their SNR is so different.

I want to ask you: both of the two values are close to 5550, but their SNR has a big difference. WHY? Which position should I take?

Cheers, Dong

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Autor:	Robin Leadbeater [ 25. Juli 2013, 20:12:24 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hello Dong, To measure SNR using LISA you cannot just use one point. You must define the start and end points of the region measured (For accurate results, chose a level region in the continuum. You might need to normalise the spectrum to the continuum to produce this level region) In ISIS, first click on "FWHM" to bring up the statistics window. (All data should show zero) Double click at the start wavelength (thick black line) then double click again at the end wavelength. When you do this the data should change from zero and show the statistics for the selected region, including the SNR. Hope this helps Robin ----- Original Message ----- From: Dong Li (fg-spek-convento@vds-astro.de) To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Sent: Thursday, July 25, 2013 3:33 PM Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Robin: Please look at the attachments. For the continuum's SNR about 5530~5550, I take a middle one : 5540. But I find a strange phenomenon with the FWHM function of ISIS: when I put the yellow cursor, i.e., at 5550, which is double-clicked to become a black thick line, the showed value in [FWHM Tab] is a bit different from that value when the cursor is a yellow thin line. 5550.485----yellow thin line; after double-clicked, showing in Tab Position 5550.673. SNR=217.5 5549.974----yellow thin line; after double-clicked, showing in Tab Position 5549.463. SNR=135.8 because: 5550.485-5550=0.485; 5550-5549.974=0.026 so: 5549.974 is the most close position to 5550. but their SNR is so different. I want to ask you: both of the two values are close to 5550, but their SNR has a big difference. WHY? Which position should I take? Cheers, Dong

Autor:	Dong Li [ 26. Juli 2013, 07:29:31 AM ]
Betreff des Beitrags:
Hi Robin: I use Lhires3, not LISA. It seems that button "normalize" in the Tab Profile of ISIS does not work. When I click "close" or "Apply" button, nothing happens. So I worry if I can normalize the continuum correctly... Dong

Autor:

Bernard Heathcote [ 26. Juli 2013, 08:16:27 AM ]

Betreff des Beitrags:

Teide 2013 WR campaign

Hi Dong,

When you click on the Normalise tab a small window should appear, where you enter the reference range that normalising will set to 1.00 (average). See attached. If you do not get that window then, yes, you do have a problem.

Cheers,
Bernard

From: Dong Li (fg-spek-convento@vds-astro.de)
Sent: Friday, July 26, 2013 3:29 PM
To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)
Subject: [fg-spek] Re: Teide 2013 WR campaign

Hi Robin:

I use Lhires3, not LISA.

It seems that button "normalize" in the Tab Profile of ISIS does not work. When I click "close" or "Apply" button, nothing happens. So I worry if I can normalize the continuum correctly... Bild

Dong

No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3349 / Virus Database: 3209/6521 - Release Date: 07/25/13

Dateianhänge:

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Autor:	Bernard Heathcote [ 26. Juli 2013, 09:20:46 AM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Dong, Some people use the term ?normalisation? to mean the removal of the continuum, which can be confusing as others (including ISIS) use the term for re-scaling the spectra to have a unity value at some specific wavelength. If you were expecting the ISIS normalisation function to remove the continuum then that will not happen (it will only change the amplitude scale) and you need to use the Continuum tab for that. Bernard

Autor:	Robin Leadbeater [ 26. Juli 2013, 13:38:22 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Dong, Sorry, I typed LISA instead of ISIS Yes in this case I meant normalising (sometimes called rectifying) to remove the shape of the continuum, not just rescaling. Currently for WR134 I am using a linear fit through 2 regions at 5245-5255 and 5545-5555 to define the pseudo-continuum. (with WR stars we do not see down to the star surface so there is no true continuum) Cheers Robin ----- Original Message ----- From: Bernard Heathcote (fg-spek-convento@vds-astro.de) To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Sent: Friday, July 26, 2013 8:51 AM Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Dong, Some people use the term ?normalisation? to mean the removal of the continuum, which can be confusing as others (including ISIS) use the term for re-scaling the spectra to have a unity value at some specific wavelength. If you were expecting the ISIS normalisation function to remove the continuum then that will not happen (it will only change the amplitude scale) and you need to use the Continuum tab for that. Bernard Quicquid Nitet Notandum

Autor:

Dong Li [ 26. Juli 2013, 14:49:43 PM ]

Betreff des Beitrags:

Hi Bernard and Robin:

Look at my pictures. I have the little window for normalize, but whatever I click "compute" or "close" button, I can not see any changes on the profile.

For example, at the beginning of producing spectrum, in Tab settings---scaling spectral range, I enter 5545~5550, then step by step to process. When I get the profile, I click "normalize" button, enter i.e. 5525~5530, then click Compute or close button, nothing pops up and I can not see any changes on the profile. Don't know why.

My ISIS is version 5.1.2

Dong

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Autor:	Bernard Heathcote [ 26. Juli 2013, 16:11:23 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Dong, I do not think the selected normalisation range #1 (5525) and #2 (5530) is covered by your spectra, but it is difficult for me to be sure. If it is not then clicking the normalisation button will have no effect. Also, the only change will be that the continuum value will be about 1.0 between #1 and #2; the shape will not change. Bernard From: Dong Li (fg-spek-convento@vds-astro.de) Sent: Friday, July 26, 2013 10:49 PM To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Bernard and Robin: Look at my pictures. I have the little window for normalize, but whatever I click "compute" or "close" button, I can not see any changes on the profile. Dong No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3349 / Virus Database: 3209/6521 - Release Date: 07/25/13

Autor:	Robin Leadbeater [ 26. Juli 2013, 17:22:33 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Dong, Use the Continuum tool in ISIS to normalise to the continuum. (cut out all the spectrum except the continuum regions and use a high smoothing coefficient, then divide the spectrum by this, like calculating the instrument response) cheers Robin ----- Original Message ----- From: Dong Li (fg-spek-convento@vds-astro.de) To: fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de) Sent: Friday, July 26, 2013 1:49 PM Subject: [fg-spek] Re: Teide 2013 WR campaign Hi Bernard and Robin: Look at my pictures. I have the little window for normalize, but whatever I click "compute" or "close" button, I can not see any changes on the profile. Dong

Autor:	Dong Li [ 27. Juli 2013, 13:45:41 PM ]
Betreff des Beitrags:
Hi dear Bernard and Robin: Thank you very much for your quick reply and these useful hints, I'll try. And tomorrow I am to attend the famous OHP, I think that I will learn more and practice there. I think also that real instruction will help me much more... Thank you again! Cheers, Dong

Autor:	Martin Dubs [ 29. Juli 2013, 11:00:15 AM ]
Betreff des Beitrags:
Hi Dong, maybe you are confused somewhat by the two normalization windows in the setup and the Profile tab. The spectral domain for profile scaling in the settings tab is used during spectrum reduction. It should contain values within the recorded spectral range. The normalize button in the profile tab is used if you want to scale the spectrum differently by scaling it to one in e a different wavelength range. Correcti0on for instrument response or normalizing to the continuum would then be the next step. So much for the moment, I am looking forward to see you at OHP, where we can discuss any remaining issues. See you soon, Martin

Autor:

Martin Dubs [ 29. Juli 2013, 11:15:38 AM ]

Betreff des Beitrags:

Hello Teide team,

I noticed that the spectra from the last days have been uploaded to the server. Apart from the known problems with the camera readout the data still look good. Some comments:
The camera has been rotated somewhat, a change I suggested weeks ago. This helps analyzing thee data with ISIS. A wider range can now be covered without problems.
This allows to reduce the search window for the calibration lines, improving calibration.
There is still the problem of feeding the calibration light into the spectrometer fiber. This should be addressed by the present team of eShel experts.
I upload the new configuration and calibration files for easy use of ISIS to the server (20130726 folder).
Here some example for WR134:

Good success and clear skies to the new team,

Martin

Dateianhänge:

Dateikommentar: WR134 C III region

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Dateikommentar: WR134 full spectrum merged

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Autor:	Berthold Stober [ 29. Juli 2013, 12:39:00 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hallo Martin, Derzeit bin ich nicht in der Lage, mir die files selber an zu sehen und somit die Spektren selbst zu reduzieren. Ich finde das sehr gut, dass Du ie dazu gehörigen Calibrationstafeln immer sofort erstellst und auf dem Server zur Verfügung stellst. Herzlicher Gruss Berthold Am 29.07.2013 um 10:15 schrieb Martin Dubs <fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)>: Zitat: Hello Teide team, I noticed that the spectra from the last days have been uploaded to the server. Apart from the known problems with the camera readout the data still look good. Some comments: The camera has been rotated somewhat, a change I suggested weeks ago. This helps analyzing thee data with ISIS. A wider range can now be covered without problems. This allows to reduce the search window for the calibration lines, improving calibration. There is still the problem of feeding the calibration light into the spectrometer fiber. This should be addressed by the present team of eShel experts. I upload the new configuration and calibration files for easy use of ISIS to the server (20130726 folder). Here some example for WR134: Good success and clear skies to the new team, Martin <_wr134a_20130726_931_full.png> <_wr134a_20130726_931_CIII.png>

Autor:	Martin Dubs [ 01. August 2013, 11:41:25 AM ]
Betreff des Beitrags:
Hello everybody, if you are interested in what is going on at Teide IAC80 now you should have a look at this page: http://pdl-astronomie.fr/ In french, but nice pictures anyway. Regards, Martin

Autor:	thierry Garrel [ 01. August 2013, 23:48:34 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hello,Tonight a very strong Calima prevent us to open the dome. we don't know if it will stay all the night out of limit. See here for dust monitoring: http://stella.aip.de/stella/status/getdetail.php?typ=24 We decided to divided the team in two parts. One go to bed early, will be fresh for tomorrow, and the other will stay for better conditions to observe. It's time for amteurs to take over observations. Cheers Teide Team 2013/8/1 Martin Dubs <fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)> Zitat: Hello everybody, if you are interested in what is going on at Teide IAC80 now you should have a look at this page: http://pdl-astronomie.fr/ In french, but nice pictures anyway. Regards, Martin

Autor:	thierry Garrel [ 03. August 2013, 01:50:59 AM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hello,we are stuck by the calima once again. No observations. It came only 9 days in a year and it's on us. we are lucky. Good news, today the fovia was repaired but we did not test it of course. So calibration frames after calibrations frames we are waiting for clears skies. We got the vistit of Hans Peter Doerr from the VTT, the vacum tower telescope, a solar telescope with spectro polarimetry abilities up to a resolution of 10^6 and discussed a lot about spectroscopy. He was surprised by results we obtained with modest equipment. Well time is long, hope observers can take it over. Cheers T 2013/8/2 thierry Garrel <fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)> Zitat: Hello,Tonight a very strong Calima prevent us to open the dome. we don't know if it will stay all the night out of limit. See here for dust monitoring: http://stella.aip.de/stella/status/getdetail.php?typ=24 We decided to divided the team in two parts. One go to bed early, will be fresh for tomorrow, and the other will stay for better conditions to observe. It's time for amteurs to take over observations. Cheers Teide Team 2013/8/1 Martin Dubs )fg-spek-convento(==>)vds-astro.de ([email]fg-spek-convento(==%3E)vds-astro.de[/email]))> : Hello everybody, if you are interested in what is going on at Teide IAC80 now you should have a look at this page: http://pdl-astronomie.fr/ In french, but nice pictures anyway. Regards, Martin Thierry Garrel Observatoire de Fontcaude, Montpellier, France SpectroBlog http://gabalou.canalblog.com/

Autor:	thierry Garrel [ 03. August 2013, 05:04:08 AM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi, Calima is down now but we have a problem with the telescope, No spectra has been taken so far. We wait if the telescope restart again. T

Autor:	thierry Garrel [ 06. August 2013, 23:56:29 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi from the Teide, Telescope is still broken and in repair. Problems came from Dec motors and encoders. From our first week we had partial nights, with random breakdown and no Fovia. We got Fovia back at the beginning of the Calima and have the possibility to use it for two nights until telescope downed. We got only 7 nights of data on 12 nights, from two to four series of WR spectra, total 68 gathered. It last three nights, with no assurance of observations parts of the telescope are still missing. So time is long, witing for some miracles; Thierry

Autor:

Berthold Stober [ 07. August 2013, 09:37:59 AM ]

Betreff des Beitrags:

Teide 2013 WR campaign

Hi Thierry,

yes , time will become rather long on Teide and you loose a lot of money if alwyas the telescope brake down. I am rather astonished, that this happened again and again. . Perhaps it is so because so many people do use this instrument,, but I really I don?t understand this as I don?t understand a lot of other things

cheers berthold

Dateianhänge:

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Autor:	thierry Garrel [ 08. August 2013, 15:31:52 PM ]
Betreff des Beitrags:	Teide 2013 WR campaign
Hi Berthold,Telescope has restarted yesterday. I have to say that it was Team 2, Everberg/Knund, who has pushed twice telescope out of limit and that was the beginning of all the problems. We had discovered it in the log book. I don't know if you will be back here but i recommend you to check this journal and you will understand a lot of things. From IAC technical support i had this answer "I want to stress the fact that IAC80 is operating under a minimal maintenance", so problems are not solved, but i cannot blamed IAC as accident came from our campaign leader and i have the feeling that it was kept under silence. So i hope that the campaign will successfully ending, but the truth have to be known after. Cheers Thierry 2013/8/7 Berthold Stober <fg-spek-convento@vds-astro.de (fg-spek-convento@vds-astro.de)> Zitat: Hi Thierry,Jorge Garcia Rojas yes , time will become rather long on Teide and you loose a lot of money if alwyas the telescope brake down. I am rather astonished, that this happened again and again. . Perhaps it is so because so many people do use this instrument,, but I really I don?t understand this as I don?t understand a lot of other things cheers berthold

Autor:	Thomas Eversberg [ 09. August 2013, 23:35:50 PM ]
Betreff des Beitrags:
Hi all! Team 7 took over at Teide for transfer night. I just skyped them and they are optimistic to bring the setup and the telescope back into order again. Team 6 already left the summit to the beach. I and the IAC people in charge thank them for their efforts, bon voyage and we wish good luck for the future. Thomas

Autor:	Thomas Eversberg [ 11. August 2013, 14:12:24 PM ]
Betreff des Beitrags:
Hi all! Team 7 already took a number of spectra of all our target stars. It seems that we are back to regular operation again. No technical trouble so far. Cheers, Thomas

Autor:	Thomas Eversberg [ 11. August 2013, 18:12:10 PM ]
Betreff des Beitrags:
Me again! I just skyped with team 7. They acquired the full program for all three target stars. Since the last two nights the telescope is running smoothly without any problems again and data are fine. Even the number of read-out failures is reduced to two in one night. They now rename the files as done by most of our teams. They have no ftp account in Montreal, yet, but already sent a respective mail to Montreal. As soon as the data are there our colleagues Martin Dubs and Noel Richardson will check them for their quality and can, hence, support our observers. Cheers, Thomas

Autor:	Daniel Sablowski [ 12. August 2013, 19:50:45 PM ]
Betreff des Beitrags:
Folks, as you may know, Ted an I have arrived at Teide at Friday. We got a very good briefing from the very friendly night assistant Lana and started observing. The telescope works very well and the spectra look pretty good. I can not understand what problems people had before us and I don´t want to say more about that. We are very happy about the technique (FOVIA is a well working autoguiding system - I would like to take it with me ) and also about the friendly people from IAC here on the mountain. Yesterday the weather was not very good. Some clouds disturbed FOVIA but we were able to take three rounds of WR spectra and the standard stars. There are more clouds on the sky today. Nevertheless, we hope that we can take some spectra. We don´t get enough from working with that realy good telescope. It is a pleasure to work here and be a part of this campaign! At the moment we are taking some darks. Well, not we but the camrea does and later or tomorror we plan to send the first data to montreal! Well, we will keep you informed about our observations! Cheers, Ted and Daniel

Autor:	Daniel Sablowski [ 12. August 2013, 22:41:02 PM ]
Betreff des Beitrags:
Friends, it is very cloudy over el Teide. Additional observations are highly welcome! chiao, Ted & Daniel

Autor:

Berthold Stober [ 13. August 2013, 11:30:21 AM ]

Betreff des Beitrags:

Hello,

in the last two clear nights I got these spectra. I took them the first time for me at 5400 A. I don't realy believe, that the visible variations are real, but I have no other results so far. I think I can start a new attempt to get further spectra from these star in these wavelength area.

cheers berthold

Dateianhänge:

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Autor:

Martin Dubs [ 13. August 2013, 15:33:47 PM ]

Betreff des Beitrags:

Hello Ted and Daniel,

I had a look at the last spectra you have taken. They look very good, apparently little has changed in the echelle during the last weeks. I analyzed them with ISIS and put the results (spectra, configuration files and an updated manual) on the Montreal server (20130811). Here some results:

Regards, Martin

Dateianhänge:

Dateikommentar: WR137

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Dateikommentar: WR135

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Dateikommentar: WR134

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Autor:	Daniel Sablowski [ 13. August 2013, 15:58:07 PM ]
Betreff des Beitrags:
Hi all, yesterday it was to cloudy here. However, I tried to improve the readout problem. I changed the data cable from CCD to converter (no improvement) and the CCD could be rotated now a little bit (it is not well srewed to the lens). But I tried to get the former orientation again. I also tried all USB connections at the laptop and spatialy isolated the converter from other electronics. Also the USB cable from the converter to the laptop. Now we had 2 disturbed images out of 25. It seems to me, that some other electronics disturb the readout process, may be the high voltage hallow cathode lamp power supply... Today the sun is back and we are lucky to get some spectra! Regards, Ted & Daniel

Autor:	Berthold Stober [ 13. August 2013, 16:09:55 PM ]
Betreff des Beitrags:
Hi Martin, Ted and Daniel, splendid work and splendid reduction results from Martin. So far I can see, the profile at ~5400 A at WR134 I demonstrated could be right.. cheers berthold

Autor:	Thomas Eversberg [ 13. August 2013, 16:15:08 PM ]
Betreff des Beitrags:
Zitat: It seems to me, that some other electronics disturb the readout process, may be the high voltage hallow cathode lamp power supply... That has already been the assumption by Knud and me in team 2. We unsuccessfully re-arranged the cables. The problem is the number os possible reasons and it might even be a combination. But again, because the pros are fine with the data I would not introduce too much work on it. Cheers, Thomas

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