Lighting question (strobe power)
This may be something Genghis knows, but anyone feel free to contribute.
I am experimenting with some lighting for a farmstrip at night. There is no mains, so the sytem will be battery and solar driven. One of the components will be a white strobe for identifying the field at a distance. This will automatically cut when on final approach, so change in accomodation and retinal sensitivity should not be a problem (hopefully).
Xenon strobes seem to be available from 2 joules to 10 joules. We would like to be able to spot the field from a couple of miles. Would 2 joules be adequate? I know it depends on other stuff like surrounding lighting, but a ball park idea would be helpful. What is the power of a wingtip strobe for comparison?