Hi Richard, it's very hard to use flash lighting when making panos. The two times I have seen it kind of work were:

1. A guy took 6 shots around and had an assistant behind him with a 3x4 foot softbox. The light direction has to be straight ahead from the axis of rotation, no side lighting.

2. Similarly, the expensive panoscan camera, was used by another guy, and he used a constant hot light with a bounce back umbrella, directly mounted to the camera, and was giving that straight ahead from the axis light. The Panoscan captures, I believe, one degree field of view at a time, so the light was plenty broad.

Hi,

I recently took a panorama in a very dark place. The only lighting came from small luminarias and the stained glass windows near the roof.

http://www.360cities.net/image/memorial-of-la-citadelle-de-quebec#0.00,0.00,70.0

This panorama comprises 28 photos. I used full flash for most of the photos, except those near the door where I reduced it to 2/3 of its force. The result is quite good, I think :-)

Maybe it worked because it was a small place and the walls did not reflect the flash too much. I dont know if it would have been as good in a much bigger place.

The bottom line is: what have you got to lose to try it !

Vincent Royer