Peter
I hadn't thought about the diffuser material. I also didn't rig this up to my scope, just had it sitting neatly underneath.
Looking at other artificial lights, the LEDs work a treat. Looking at standard neon lights for example, all the LISA reveals is a series of emission lines.
I'm very happy with my box. It's the one constant in all my fiddling with calibration. I recently had a play with dusk flats - both regular and with a tshirt and the results weren't up to your light box. Frankly, you are doing us all a service turning these out at a very reasonable price.
I agree with you - I can't see how LRGB imaging is adversely affected if the light is not flat across all wavelengths.
Pete
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