[BK613]

Timo wrote:

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...Or the normal BRIGHT spots to mark portholes.

In that violation of a screencap, e.g. the blue shuttlebay doors have lost their telltale hue, too. Were they absent from the Stargazer until she turned her flank toward the camera?

This is our absolute best view of the ship's bow, and the top torp deck area is in such shadow that darker central rectangles may be present just as well as absent:

http://tng.trekcore.com/hd/albums/1x...tle_hd_149.jpg

Timo Saloniemi

this is a better-lit image

http://tng.trekcore.com/hd/albums/1x...tle_hd_429.jpg
Doesn't look like there is any photon hardware but as blssdwlf said, could be doors. Could be that Constellations had them when they were new but the launcher guts were removed as the tech obsolesced and the space repurposed.