There has been a bit of internet discussion on this portable LED light for moths that is lightweight and can run from powerpacks normally used to charge mobile phones when away from power points (e.g.for camping). Thought it may be of interest to moth hunters who read this blog. The supplier is German so the price is in Euros. The main downside to the light I can see is the cost – at 400 Euros it is very expensive!
Follow the link below to find out more.
http://www.gunnarbrehm.de/en/contact.html
Neil
There was a paper on the trials of this during its development that was shown on a moths facebook page by Les Evans-Hill. I can’t remember which Facebook page, sorry. Whilst the image shows lots of moths, the paper shows results that are a far cry from the numbers caught by a 125W MV light. This is a start though. It seems it is basically all about the wavelength but not as simple as finding a particular wavelength. Moths of different species see different wavelengths and have at least 3 different receptors detecting different wavelengths. LEDs emit a narrow wavelength band of light. Thus this developed light brings several colours together. This is a start but there is a long way to go. I have been experimenting. With a single colour ‘cool white’ LED it attracted good numbers of Flounced Rustic and Pyrausta despicata plus flies and bugs but little else. I then tried something described as ‘full spectrum’ That gave a light in which the human eye could detect 4 colours. It was totally ineffective despite being very bright. There is a lot of research needed!
Link to research paper https://doi.org/10.3897/nl.40.11887