LASER experiments and spectral calibration

[Robin Leadbeater]

I just made a few checks indoors using a red LED with my 350D DSLR, 18mm lens with a Star Analyser 200 on the front.  There was a slight reduction in dispersion close in but once beyond 5m the change was very small

Relative to the dispersion at 10m, the dispersion reduced by

5m =0.9%    1m = 3.5%  0.5m = 5.7%

Cheers

Robin

[Derek Robson]

Good to learn of those results Robin. 

[Author]

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