| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| stoft | "Also would be nice ..... while you have the Ocean Optics spectrometer available, capture the best resolution spectra you can of a 2700K CFL as that..." | Read more » | almost 9 years ago | |||
| stoft | "I bought mine from a Solux distributor, but I assume ones like this: http://www.amazon.com/18003-Daylight-Halogen-Degree-Kelvin/dp/B0002GS4OG are p..." | Read more » | almost 9 years ago | |||
| stoft | "While there will be some variation between individual lamps, even the spectra of one sample, taken with a commercial spectrometer, would be useful;..." | Read more » | almost 9 years ago | |||
| stoft | "Understood; though independent checks and tests are still the best method to find hidden anomalies and overlooked issues. When you fix the glitch, ..." | Read more » | almost 9 years ago | |||
| stoft | "Just extracted the Slux4700K original data w/rgb and your gain-corr curve data from above, scaled the curves to eliminate that factor and plotted. ..." | Read more » | almost 9 years ago | |||
| stoft | "The CSV data files have poorly formatted data. The text of the files often looks like this: 206.809,2.55,2.5500000000000003,7.6499999999999995,2.55..." | Read more » | almost 9 years ago | |||
| stoft | "Ok, I got a fresh copy of Chrome to work so here's a Solux 4700K spectrum which was callibrated with a 'CFL2700K' new cal data. https://spectralwor..." | Read more » | almost 9 years ago | |||
| stoft | "Ok, just took a look, replied no, still broken. I cleared cache with no effect. I filed another bug report as I cannot even use the switch to a 'ne..." | Read more » | almost 9 years ago | |||
| stoft | "Jeff, I was going to provide you with a fresh plot but unfortunately SWB still fails on Firefox -- same "left half only" spectrum with no visible d..." | Read more » | almost 9 years ago | |||
| stoft | "Since you appear to have verified all the individual elements, the solution must be that your overhead "fluorescent" ceiling lights are not the typ..." | Read more » | almost 9 years ago | |||
| stoft | "Ok, still a mystery; but I'll bet it's something simple that's overlooked. Let's double-check the obvious. In room light, the webcam by itself shou..." | Read more » | almost 9 years ago | |||
| stoft | "Ok, it was just a reflection in the earlier photo. Just good to check. Could there be any issue with the DVD as a diffraction grating having been a..." | Read more » | almost 9 years ago | |||
| stoft | "Quick question .... in your photo above (of the 0.4mm slit) it looks like there is a gap between the slit film and the paper holder for that film. ..." | Read more » | almost 9 years ago | |||
| stoft | "Yes, the flexibility is good and yes, that plot is better because it doesn't alter what is real and clearly shows the effect of just cutting off th..." | Read more » | almost 9 years ago | |||
| stoft | "Ah yes, the new plots are there. However, the entire shape of the spectra has been shifted so the ratios between peaks are thus different from the ..." | Read more » | almost 9 years ago | |||
| stoft | "I'm confused by the two plots. The 'noisy' plot doesn't have the signal so I'm guessing it's an average of what is left after chopping off anything..." | Read more » | almost 9 years ago | |||
| stoft | "Glad this note is helpful. Between using a "clean" CFL spectrum for wavelength calibration, a sharp narrow slit, performing a gain-correction and b..." | Read more » | almost 9 years ago | |||
| stoft | "Hmmm. Well, I'd agree the above image seems "fuzzy" but I'm also not clear as to what light the spectrum is representing. It also looks very over-e..." | Read more » | almost 9 years ago | |||
| stoft | "Jeff, I did a few quick tests and added an "Opacity" section above. While more observations are needed, these limited results are interesting. " | Read more » | almost 9 years ago | |||
| stoft | "Thanks; good comments. 1 - Dilution: I updated the note to clarify that the larger signals were only attenuated to better match the range of the w..." | Read more » | almost 9 years ago | |||
| stoft | "Gretchen, thanks for the insight. I'd read that the generally broad fluorescence spectrum is, as would be expected, a combination of many spectral..." | Read more » | almost 9 years ago | |||
| stoft | "I just ran some new calculations looking at the curves from my existing data and found a possible correlation between oil density and the centroid ..." | Read more » | almost 9 years ago | |||
| stoft | "Jeff, thanks. 1 - Yes, you are right, there is a "glow" from EVO. However, that peak is small and out at 650nm past where it has little effect. I ..." | Read more » | almost 9 years ago | |||
| stoft | "Jeff, pretty close. I'll try again, in case I'm not reading your code accurately.... 1 - Solux4700K_spec([nm(300:800),val(300:800)]) = the Mfg's s..." | Read more » | almost 9 years ago |