OK, as long as they do the job. Ive got 9 evenly spaced pointing straight down with some diffuser material in between running off about 2.8 volts, don't think they can take much more than that. Its the small square ones with 4 studs, although i only need two of the studs.
I looked at the 600sec exposure again and it produced an ADU of 17000 not the original 6000, but still short of where i want to be. Maybe i need to point it at the sky at midday to get some light through
. Ill try that - away from the sun.
Josh