Ok I wrote this before I found out about the barlow technique.
http://oortcloud.org/index.php?topic...79090#msg79090
What I do now is similar, only I leave the nose cone off, hold the 2X barlow in front of the chip, slowly pan around a room with a light on (with the camera working & hooked to the laptop of course!) & eventually with the right lighting circumstance, you'll see the motes. Clean & repeat. 10X if U have to lol. If they don't shift...you might have what I had (motes under coverplate) which is bad.
The idea of using the barlow is simple; a bigger magnification makes them way easier to see. The other possibility is motes on the barlow elements but unlikely..The barlow is too far away from the imaging plane..