# The name of a particular low extinction region

There is a region called Baade's 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?

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 $E(B-V) \sim 0.6$.

• good, this is the one I want to find. – questionhang Dec 10 '14 at 1:17

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.

• not this one. There are other astronomical items called XX window? – questionhang Dec 8 '14 at 20:36
• You said with low amount of dust, which means low extinction for me... – skytux Dec 8 '14 at 21:48
• my bad. There should be a more famous window. – questionhang Dec 9 '14 at 2:19