<p>If you know how to reduce raw spectrum data, you may look at the official archives of big observatories (ESO, MAST, CADC). But a quicker and much easier way could be to use the following portal:</p>

<p><a href="http://archive.eso.org/scienceportal/home" rel="nofollow noreferrer">http://archive.eso.org/scienceportal/home</a></p>

<p>Typing the name of some Wolf Rayet stars will lead you to reduced data and thus spectra.</p>

CC BY-SA 4.0
2019-12-21T06:48:40.473Z
Thank you, the eso website is a very nice reference that I did not know!
Laurent Hayez
CC BY-SA 4.0
2019-12-20T10:55:29.700Z
2019-12-20T10:55:29.700Z
onekiloparsec
<p>I'm looking for a way to access the data used to produce <a href="http://www.astronomie-amateur.fr/ProjetsSpectro3_WRAtlas_Lisa.html" rel="nofollow noreferrer">these plots</a> for instance. These plots show the spectrum of various Wolf-Rayet stars. I found a few websites where you have some informations on those stars <a href="http://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&amp;simbo=on&amp;submit=submit+bibcode&amp;bibcode=1987ApJS...65..459T" rel="nofollow noreferrer">here for instance</a>, but I'm not able to find and download a file containing the spectrum data of the stars. </p>

CC BY-SA 4.0
2019-12-20T15:28:53.447Z
Depending on the number of digits precision you need, you could take the graphs and feed them to DataThief   https://datathief.org/
Carl Witthoft
CC BY-SA 4.0
2019-12-21T06:49:07.060Z
Thank you @CarlWitthoft, I did not know this tool. That can be very useful.
Laurent Hayez
<star><spectroscopy><resource-request>
Data for spectrum of Wolf-Rayet stars
Laurent Hayez
# Data for spectrum of Wolf-Rayet stars

(Asked by: username_0 on 2019-12-20)

I'm looking for a way to access the data used to produce [these plots](http://www.astronomie-amateur.fr/ProjetsSpectro3_WRAtlas_Lisa.html) for instance. These plots show the spectrum of various Wolf-Rayet stars. I found a few websites where you have some informations on those stars [here for instance](http://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&simbo=on&submit=submit+bibcode&bibcode=1987ApJS...65..459T), but I'm not able to find and download a file containing the spectrum data of the stars.

**Tags:** star, spectroscopy, resource-request
> **Comments:**
> **username_1**: Depending on the number of digits precision you need, you could take the graphs and feed them to DataThief   https://datathief.org/  
> **username_0**: Thank you @CarlWitthoft, I did not know this tool. That can be very useful.  

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## 1 answers

### Answer by username_2 on 2019-12-20. Score: 4 | Accepted answer

If you know how to reduce raw spectrum data, you may look at the official archives of big observatories (ESO, MAST, CADC). But a quicker and much easier way could be to use the following portal:

<http://archive.eso.org/scienceportal/home>

Typing the name of some Wolf Rayet stars will lead you to reduced data and thus spectra.

> **Comments:**
> **username_0**: Thank you, the eso website is a very nice reference that I did not know!  

---

