Baade’s Window
Baade's Window is a small clearing in the dust clouds of Sagittarius,
near the globular cluster NGC 6522, through which it is possible to
see stars within 1,800 light-years of the galactic centre..
http://www.martin-nicholson.info/infrared/ngc6522.htm
Martin Nicholson, Daventry, England.
My website is at
http://www.martin-nicholson.info/1/1a.htm
My informal Astronomical Blog is at
http://ukastronomy.livejournal.com/