C. M. Kosemen

C. M. Kosemen

Artist and Researcher




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Moth-attracting LED lamp


This is the DIY
moth-lamp that I have constructed for the express purpose of attracting and photographing nocturnal insects. The device was inspired by, and modeled on the excellent LepiLED lamp by Dr. Gunnar Brehm.


The lamp is based on 9 powerful LEDs mounted on a PCB board.


Below is the list of the models and wavelengths of the LEDs that I used.
2x Cree 3W blue power LED ≈ 450nm
1x Cree 3W green power LED ≈ 530nm
1x Pro-Light 3W warm white power LED ≈ 500-600nm
5x Edison UV power LED ≈ 370-400nm


The LEDs are individually equipped with 5-degree single-led projector lenses for increased light focus.
This may actually have had an adverse effect on the performance of the lamp by filtering out certain wavelengths.


The system is powered by a Turkish-made Mervesan MSD-20-350 20W 3-48Vdc/350mA constant current IP67 LED driver set at 27W.


There is a passive cooling system, based on a 90mm. x 50mm. generic aluminium LED heat sink.


Finally, the system is attached to aswitch connected to a 6-metre length of rugged, waterproof power cable.
The system is powered by plug-in power, but it can also be attached to a small generator or car battery for extra portability.

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