<p>The whole SETI project started by making observations on this frequency, using the Big Ear telescope.</p>
<p>My recommendation is go to the wikipedia page about the <a href="https://en.wikipedia.org/wiki/Wow!_signal" rel="nofollow noreferrer">Wow! Signal</a> and follow the links from there.</p>
<p>If I find anything that may be more specifically useful, I will add it here:</p>
<p><a href="https://seti.berkeley.edu/wow/" rel="nofollow noreferrer">Breakthrough Listen Search for the WOW! Signal</a>.
<em>This article includes links to <a href="https://bldata.berkeley.edu/6EQUJ5/" rel="nofollow noreferrer">raw data</a>.</em></p>
<p><a href="https://arxiv.org/abs/1906.07391" rel="nofollow noreferrer">The Breakthrough Listen Search for Intelligent Life: Public Data, Formats, Reduction and Archiving</a>
Matthew Lebofsky, et al.</p>
<p><em>Not sure how much of this is on hydrogen line.</em></p>

CC BY-SA 4.0
2023-10-21T09:33:05.843Z
2023-10-21T10:25:05.057Z
2023-10-21T10:25:05.057Z
David
<p>I am looking for an open source that contain <strong>historical raw data</strong> or (meta)data about historical observations of the 21 cm line hydrogen made via radio telescopes.</p>

CC BY-SA 4.0
2023-10-09T22:41:37.033Z
Your [tag:resource-request] question is certainly on-topic here. If you have no luck with answers here after a while (but I think you will) you could then consider having this migrated to [History of Science and Mathematics Stack Exchange](https://hsm.stackexchange.com/) (HSM SE). But that site is more about the history while you are really asking for sources for historical data or records thereof.
uhoh
<observational-astronomy><radio-astronomy><history><radio-telescope><resource-request>
is there any site with historical radiotelescope data about observations 21 cm line Hydrogen (1.42 GHz)?
Rad
# is there any site with historical radiotelescope data about observations 21 cm line Hydrogen (1.42 GHz)?

(Asked by: username_0 on 2023-10-08)

I am looking for an open source that contain **historical raw data** or (meta)data about historical observations of the 21 cm line hydrogen made via radio telescopes.

**Tags:** observational-astronomy, radio-astronomy, history, radio-telescope, resource-request

> **Comments:**
> **username_1**: Your [tag:resource-request] question is certainly on-topic here. If you have no luck with answers here after a while (but I think you will) you could then consider having this migrated to [History of Science and Mathematics Stack Exchange](https://hsm.stackexchange.com/) (HSM SE). But that site is more about the history while you are really asking for sources for historical data or records thereof.  

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## 1 answers

### Answer by username_2 on 2023-10-21. Score: 1

The whole SETI project started by making observations on this frequency, using the Big Ear telescope.

My recommendation is go to the wikipedia page about the [Wow! Signal](https://en.wikipedia.org/wiki/Wow!_signal) and follow the links from there.

If I find anything that may be more specifically useful, I will add it here:

[Breakthrough Listen Search for the WOW! Signal](https://seti.berkeley.edu/wow/).
*This article includes links to [raw data](https://bldata.berkeley.edu/6EQUJ5/).*

[The Breakthrough Listen Search for Intelligent Life: Public Data, Formats, Reduction and Archiving](https://arxiv.org/abs/1906.07391)
Matthew Lebofsky, et al.

*Not sure how much of this is on hydrogen line.*


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