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Old 16-08-2012, 06:16 PM
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pvelez (Pete)
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Join Date: Aug 2006
Location: Sydney
Posts: 1,250
You're right there Rick.

Its not a test of the lightbox as they work a treat.

I initially set out to look at the filters and was surprised by the drop off in B. I did a paper for my SAO course a couple of years back on flats and recall the importance for photometry of having a light source that matched the SED (spectral energy density from memory) ie it was flat across all the relevant wavelengths. But I suspect that was for serious science for very high precision work.

Perhaps the more relevant point to make is that the range of wavelengths is so even across most of the visible spectrum.

I have an electro-thingy panel too. If i have the time, I might do a comparison.

Pete
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