questions, questions, questions... if it were possible to benefit from any expertise or experience on the following, that would be much appreciated:
firstly, i'm planning a portable moth trap. (so far i've only ever used a 15w trap, run off the mains.) i'm not sure what wattage of light to go for. i had been considering the circular 22w bulbs but now wonder if that would be a mistake in terms of the battery ampere-hours required. how successful are 8w bulbs at bringing in the moths? (15w bulbs seem problematic as an 18 inch long bulb doesn't seem easy to carry around, or to mount on a portable trap.) if i used a 12 inch 8w bulb, what sort works best, and is it best to mount it vertically or horizontally? has anyone ever used a suspended trap with the light, and trap entrance, underneath? on occasions it would be useful to be able to run the trap for more than one night without having opportunity to recharge the battery in between. is that hoping too much, in terms of a practical power supply? does anyone have experience of how different types of batteries perform/last? are there any easily portable lead acid batteries? are there drawbacks to li-ion batteries in addition to the cost?
secondly, i'm wondering about buying a better camera. i've been using a compact point and shoot camera but the autofocus technology doesn't allow the lens to get close to the moth and it's difficult to avoid chromatic aberration around any edges. for micros, it's all but useless (and it's not great with macros, particularly if the light is anything less than bright). i don't have much technical knowledge of photography. does anyone know if any of the newer compact cameras are up to the job?