| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | ":+1: " | Read more » | over 6 years ago | |||
| CBradley | "@warren hey, thanks for the reply. I haven't really finished tinkering with the spectrometer yet but I will try to make some simple slits with tape..." | Read more » | over 6 years ago | |||
| warren | "Hi @CBradley - i think it's a good idea, yes! If you have a specific beginning and end size and are willing to share your work, we can probably get..." | Read more » | over 6 years ago | |||
| CBradley | "@warren Hi, I wanted to ask if you have encountered collimation slits that were not perfectly parallel (i.e. in a slight V shape tapering to close)..." | Read more » | over 6 years ago | |||
| asnow | "Thank you @warren ! " | Read more » | over 6 years ago | |||
| warren | "@asnow - here's some for 0.09mm ! spectrometer-slits-letter-0.09.pdf spectrometer-slits-letter-0.09.svg " | Read more » | over 6 years ago | |||
| warren | "And here are the ones we've reformatted for efficient printing at letter size! spectrometer-slits-letter-0.18.pdf spectrometer-slits-letter-0.18..." | Read more » | over 6 years ago | |||
| warren | "I believe this is the 2016 full PDF we printed from -- i did a new layout more recently that was just for one size, but this is the full-sized shee..." | Read more » | almost 7 years ago | |||
| warren | "Some good notes on this over the years: https://publiclab.org/notes/cfastie/1-21-2013/spectrometer-image-quality https://publiclab.org/notes/warr..." | Read more » | almost 7 years ago | |||
| warren | "We currently sell this pack: https://publiclab.myshopify.com/collections/spectrometry/products/acetate-slit-bundle With 0.09mm, 0.12mm. 0.15mm, an..." | Read more » | almost 7 years ago | |||
| warren | "Narrowed inserts, adjusted base tongue/slit, lowered windows in inserts: slit-holder-0.0.3.zip " | Read more » | almost 9 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 » | almost 9 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 » | almost 9 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 » | about 9 years ago | |||
| cfastie | "Guillaume, Moving the entrance slit farther from the grating might help. I found that the grating does not have to be angled so sharply when the gr..." | Read more » | almost 10 years ago | |||
| Guillaume123 | "To Chris It will be relatively easy for me to take out the slit adjusting mechanism and move it further from the diffraction grating adjustment by..." | Read more » | almost 10 years ago | |||
| warren | "Wow, the printed scales are super useful! " | Read more » | almost 10 years ago | |||
| cfastie | "Guillaume, That was a great idea to allow adjustments to the angle of the slit and grating. You should be able to find positions that produce very..." | Read more » | almost 10 years ago | |||
| Guillaume123 | "Thanks idahoboy1941! I have looked at the Google entries. Many of them require payment, but one by WG Fastie is immediately interesting. I can eas..." | Read more » | almost 10 years ago | |||
| idahoboy1941 | "Markdown I have observed similar effects in the past and found the difficulty to be the orientation of the "Grating Lies" in respect to the inlet s..." | Read more » | almost 10 years ago | |||
| mathew | "i like your re-adjustable grating angle setup. real nice. " | Read more » | almost 10 years ago | |||
| warren | "Hi, Guillaume - my understanding is that curved lines can result both from curved diffraction gratings (which you've avoided) and from the lens in ..." | Read more » | almost 10 years ago | |||
| Guillaume123 | "Markdown " | Read more » | almost 10 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 » | over 10 years ago |