| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| stoft | "Yes, resolution is affected by slit width; though much less than the intensity change which is related to the square area. I'd had some success in ..." | Read more » | about 10 years ago | |||
| stoft | "Pascal, Thanks. Hope my posted note on HDR2 is readable. Just a thought on the 'stepped-slit'. I constructed a number of them with the idea of for..." | Read more » | about 10 years ago | |||
| stoft | "Agreed, there is more than enough work here for two highly motivated contributors. On your HDR example above, two observations: I think there is s..." | Read more » | about 10 years ago | |||
| stoft | "Sreyanth, Don't give up so easily; I think Pascal has described an enormous amount of work. I'd suggest some collaboration is warranted and everyo..." | Read more » | about 10 years ago | |||
| stoft | "Jeff, Specific to data/analysis, post-processing can only as good as the source data. This is why I'm focused on first getting that data; other thi..." | Read more » | about 10 years ago | |||
| stoft | "Sreyanth - Yes, off-line is a valuable capability as it frees the user from the internet and it allows independent capture and retention of spectra..." | Read more » | about 10 years ago | |||
| stoft | "Chris, I just looked around at some of the posted spectra and I think I see the source of the issue you raised. The posted spectra images are NOT f..." | Read more » | about 10 years ago | |||
| stoft | "Chris, I suspect there is more attenuation gradient to be gleaned from the images than first meets the eye (as there was more than I'd suspected in..." | Read more » | about 10 years ago | |||
| stoft | "Not sure what is mounted to what in the 3D image above, but the two camera mounting methods are different: 1) "in convergent beam" - grating parall..." | Read more » | about 10 years ago | |||
| stoft | "Just a few thoughts, Yes, there may well be some "glowing" (refraction) effect of the substance as the light shines through it, but I think that's ..." | Read more » | over 10 years ago | |||
| stoft | "Jeff, nice experiment. Yes, UV is the right choice -- the shorter the wavelength the better. I'm assuming that the UV-light 'reference' was with wa..." | Read more » | over 10 years ago | |||
| stoft | "Just a suggestion, but research is all about discovery -- I highly recommend that process. A 30-sec Google search found this(below) but in 10 minut..." | Read more » | over 10 years ago | |||
| stoft | "Yes, I could print a couple sheets but it would be best to decide on the best pattern and density if you're looking to send something along the lin..." | Read more » | over 10 years ago | |||
| stoft | "Yes, I ink-jet printed on 'Grafix' transparency film (not the adhesive version)-- it's available on-line via Amazon. It's reasonably stiff in small..." | Read more » | over 10 years ago | |||
| stoft | "I see your point. I just wonder about having only a single attenuation step which could make it difficult to find the best level; a case of too lit..." | Read more » | over 10 years ago | |||
| stoft | "Ok, interesting idea. The extension to this is a continuously variable attenuator and let the detection algorithm pick the line w/max signal but w/..." | Read more » | over 10 years ago | |||
| stoft | "I'd agree that giving more visibility the the clipping issue would be good and this is a simple, cheap tool. However, I don't quite follow your 2-s..." | Read more » | over 10 years ago | |||
| stoft | "Interesting experiments. Just be careful of the word "enhancement" as it is imprecise within this technical realm. Yes, averaging is useful (assumi..." | Read more » | over 10 years ago | |||
| stoft | "No problem; I'm glad you found my observations useful. I look forward to reading your new research note. Dave " | Read more » | over 10 years ago | |||
| stoft | "Sreyanth, Good start at wrapping some descriptive boundaries around a tough project. However, after a bit of googling, it raised some questions I ..." | Read more » | almost 11 years ago | |||
| stoft | "Stu, thanks. Yes, there's still much to be understood about the performance limitations. Jeff, the app is in matlab though it could probably be co..." | Read more » | almost 11 years ago | |||
| stoft | "Jeff, Thanks. I've just posted an addendum at the end of this research note to add some plots specifically looking for linearity. I believe the ima..." | Read more » | almost 11 years ago | |||
| stoft | "Yes, a large DOF can mean a less precise focus adjustment requirement, but near "infinity" the webcam just seemed out of focus over a wide DOF. Tha..." | Read more » | almost 11 years ago |