On 11/06/2010 09:36, Adrian Stott wrote: > AIUI, the bullseye should be installed with the curved (convex) side > *down*. This lights the interior better, by dispersing the light. If > the bullseye is installed the other way up, it concentrates the light > (and heat) on a point in the interior. > > Again AIUI, people tend to install them upside-down because that way > water can't accumulate on top of them and eventually leak into the > interior. > An interesting thought - but mine has the convex side facing downwards ..
Looking at the angles involved, it had to be the evening sun as the plastic drawers unit is fitted fairly high on the fwd bulkhead and 'Wyrd was facing eastwards at the time. When I see the sun shining again I'll have a play around with it in order to see where the focal points end up as the sun moves across the sky (OK - pedants please take note that I *do* know that the sun itself doesn't actually move, relative to the boat that is .... it is the *earth* that moves - or used to when I was a lot younger <g>) Trevor [Non-text portions of this message have been removed]
