This one's debatable, but I think you can see some sort of drapery or perhaps even a reflection of some equipment out the conference room windows. At first I thought it was a reflection in the windows, but it doesn't appear to change with the angle of the camera at all.
http://tng.trekcore.com/hd/albums/1x04/codeofhonor_hd_069.jpg
http://tng.trekcore.com/hd/albums/1x04/codeofhonor_hd_070.jpg
http://tng.trekcore.com/hd/albums/1x04/codeofhonor_hd_048.jpg
http://tng.trekcore.com/hd/albums/1x04/codeofhonor_hd_050.jpg
http://tng.trekcore.com/hd/albums/1x04/codeofhonor_hd_047.jpg
I've always seen those odd things in multiple first season episodes, on both the left and right windows, depending upon the camera angle. It's just more obvious now. I think it's where the curved glass distorts either the starfield behind it, or a reflection in front of it.