<p>The Lockman hole?</p>

<p><a href="http://en.wikipedia.org/wiki/Lockman_Hole" rel="nofollow">http://en.wikipedia.org/wiki/Lockman_Hole</a></p>

<p>It has a column density of neutral hydrogen of $6\times10^{19}$ cm$^{-2}$, which will correspond to very little dust.</p>

<p>Two others I've heard of towards the Galactic bulge are known as the Sgr I and Sgr II windows.</p>

<p>Finally, I offer "Stanek's window" towards the bulge, which has been referred to in a number of the Chandra Galactic plane X-ray surveys but appears to have no refereed publication associated with its discovery. I found this on arXiv.  <a href="http://arxiv.org/abs/astro-ph/9802307" rel="nofollow">http://arxiv.org/abs/astro-ph/9802307</a>  It is at $l=0.25$, $b=-2.15$ and has $E(B-V) \sim 0.6$.</p>

CC BY-SA 3.0
2014-12-10T01:17:19.903Z
good, this is the one I want to find.
questionhang
CC BY-SA 3.0
2014-12-09T21:48:19.310Z
2014-12-09T21:54:08.680Z
2014-12-09T21:54:08.680Z
ProfRob
<p>Puppis Window?
(<a href="http://adsabs.harvard.edu/full/1982A%26AS...50..377S" rel="nofollow">Neutral hydrogen observations towards the Puppis Window of the Milky Way</a>)</p>

CC BY-SA 3.0
2014-12-09T22:07:09.860Z
2014-12-09T22:07:09.860Z
Tracy Cramer
<p>I think you are talking about <strong>Plaut's window</strong>, which is located at <code>l=0°</code> and <code>b=-8°</code>. It has a reddening of <code>E(B-V)=0.25</code> magnitudes. </p>

<p>HTH,</p>

<p>Germán.</p>

CC BY-SA 3.0
2014-12-08T20:36:57.103Z
not this one. There are other astronomical items called XX window?
questionhang
CC BY-SA 3.0
2014-12-08T21:48:38.680Z
You said with low amount of dust, which means low extinction for me...
skytux
CC BY-SA 3.0
2014-12-09T02:19:29.650Z
my bad. There should be a more famous window.
questionhang
CC BY-SA 3.0
2014-12-08T19:56:48.327Z
2014-12-08T19:56:48.327Z
skytux
<p>There is a region called <a href="http://en.wikipedia.org/wiki/Baade%27s_Window" rel="nofollow">Baade's window</a>.</p>

<p>I remember there is a similar region called "somebody's window", which also has a low amount of dust.</p>

<p>Does anyone know the name?</p>

<dust><extinction>
The name of a particular low extinction region
questionhang
# The name of a particular low extinction region

(Asked by: username_0 on 2014-12-08)

There is a region called [Baade's window](http://en.wikipedia.org/wiki/Baade%27s_Window).

I remember there is a similar region called "somebody's window", which also has a low amount of dust.

Does anyone know the name?

**Tags:** dust, extinction


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## 3 answers

### Answer by username_1 on 2014-12-09. Score: 2 | Accepted answer

The Lockman hole?

<http://en.wikipedia.org/wiki/Lockman_Hole>

It has a column density of neutral hydrogen of $6\times10^{19}$ cm$^{-2}$, which will correspond to very little dust.

Two others I've heard of towards the Galactic bulge are known as the Sgr I and Sgr II windows.

Finally, I offer "Stanek's window" towards the bulge, which has been referred to in a number of the Chandra Galactic plane X-ray surveys but appears to have no refereed publication associated with its discovery. I found this on arXiv. <http://arxiv.org/abs/astro-ph/9802307> It is at $l=0.25$, $b=-2.15$ and has $E(B-V) \sim 0.6$.

> **Comments:**
> **username_0**: good, this is the one I want to find.  

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### Answer by username_2 on 2014-12-09. Score: 2

Puppis Window?
([Neutral hydrogen observations towards the Puppis Window of the Milky Way](http://adsabs.harvard.edu/full/1982A%26AS...50..377S))


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### Answer by username_3 on 2014-12-08. Score: 1

I think you are talking about **Plaut's window**, which is located at `l=0°` and `b=-8°`. It has a reddening of `E(B-V)=0.25` magnitudes.

HTH,

Germán.

> **Comments:**
> **username_0**: not this one. There are other astronomical items called XX window?  
> **username_3**: You said with low amount of dust, which means low extinction for me...  
> **username_0**: my bad. There should be a more famous window.  

---

