| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| smurpau | "Thanks for your reply @stoft. The light source is a fluorescent tube (there aren't any CFLs available here). I also have a green flashlight and my ..." | Read more » | about 8 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 » | about 8 years ago | |||
| smurpau | "I have the v3.0 kit but can't get a focused spectrum no matter how far I turn the focus ring clockwise or counter clockwise. The diffraction gratin..." | Read more » | about 8 years ago | |||
| warren | "Narrowed inserts, adjusted base tongue/slit, lowered windows in inserts: slit-holder-0.0.3.zip " | Read more » | over 8 years ago | |||
| warren | " slit-holder-0.0.2.zip Here is a Silhouette Studio (for the Cameo or Curio) .studio3 file which I cleaned up, and a DXF which properly imported in..." | Read more » | over 8 years ago | |||
| warren | "OK, revisions: thinner shorter (but short enough?) on a millimeter grid curved tabs for easy insertion all around side flaps designed to fold bac..." | Read more » | over 8 years ago | |||
| mathew | "one of the challenges of the slit holder is getting it out towards the edge of the spectrometer-- we need it very close to a cuvette to pick up flu..." | Read more » | over 8 years ago | |||
| HalLasell | "This is an old thread, and this has probably been resolved. However, Matlab has tools which enable which support conversion of Matlab code to C co..." | Read more » | over 8 years ago | |||
| warren | "Wow, the printed scales are super useful! " | Read more » | over 9 years ago | |||
| mathew | "have you tried switching your camera to "macro" mode? I don't remember having any such low-light problems with the smartphone spec. haven't tried ..." | Read more » | almost 10 years ago | |||
| GreenLeaves | "Hi warren, we have a problem. We wanted to edit our picture, but it didn't work, because the photo doesn't appear on the screen... " | Read more » | almost 10 years ago | |||
| stoft | "Jeff, Yes, you could double the slit width and double the exposure but you also significantly decrease the resolution. That said, I've noticed that..." | Read more » | almost 10 years ago | |||
| amysoyka | "Ta Da! " | Read more » | almost 10 years ago | |||
| amysoyka | "Slit vs Cone ](https://i.publiclab.org/system/images/photos/000/005/151/original/IMG_20140705_212034.jpg) " | Read more » | almost 10 years ago | |||
| tmoravec | "the reason for the fast fallof at 600+ nm is IR filter on the CCD/CMOS chip of the camera. I am currently working on similar problem. I need to cal..." | Read more » | over 10 years ago | |||
| mathew | "Object interference update: http://publiclab.org/notes/mathew/09-26-2013/telephone-poles-streetlights-at-sunset " | Read more » | over 10 years ago | |||
| mathew | "Through a somewhat dirty window. Yeah, wierd, right? its so striated. " | Read more » | over 10 years ago | |||
| warren | "Whoa - how is that sky spectrum so varied? Was it pointed through a screen or something? " | Read more » | over 10 years ago | |||
| mathew | "I don't think diffusion gets the stepped result expected. Here is a spectra of a very overcast sky: https://spectralworkbench.org/spectra/embed/13..." | Read more » | over 10 years ago | |||
| warren | "Super. I hope we can get the stepping to work, though most of all for the desktop kits -- imagine not doing any more lasercutting! And while some p..." | Read more » | over 10 years ago | |||
| mathew | "Yes, the photoprinting gets excellent results. I'm consistently impressed by it, and the lack of internal reflection and aberrations that appear. ..." | Read more » | over 10 years ago | |||
| warren | "Hi, Mathew - just posted an update on the stepped slit tests here: http://publiclab.org/notes/warren/09-25-2013/stepped-slit-tests BTW, your links..." | Read more » | over 10 years ago | |||
| warren | "I think if we do something with a few more lines, as you say, we can try it out. Say, 75-50-25-0-25-50-75, each band being about a 1/4" wide. If yo..." | 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 |