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Technical response:

Thank you Russell for pointing out the suitability of the precisExcite 
from CoolLED for time lapse work. You are absolutely right!  
Being a fully solid state LED illumination system (no mercury issues) the 
product does not suffer from the many problems of arc lamps. 
For time lapse experiments the precisExcite can be operated through 
software or TTL pulses, to switch on then off only when a picture needs to 
be taken. There is no need to leave the device on constantly like a bulb, 
also no need for shutters. A particular advantage for time lapse work is 
its stability, in intensity and homogeneity over time. 

Commercial response:

PrecisExcite is very cost effective. For cost comparison information 
please visit http://www.coolled.com/precisexcite/precise_cost.html

Please feel free to contact me directly for further information.

Best Regards,

Gerry

Gerard Whoriskey
Development Engineer
COOLLED Ltd
CIL House
Charlton Road
Andover
Hampshire
SP10 3JL
 
Mob: 07789535762
Tel: ++44 (0)1264 321321
Fax: ++44 (0)1264 321329
web site: www.coolled.com