| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Huh, did your diffuser make it easier to get bright spectra? Why did you choose to use one? The red light bulb is an experimental "fluorescent lig..." | Read more » | over 8 years ago | |||
| warren | "Hi, Cindy - wow, you had spectacularly well-lit scans! Your laser must be quite powerful, or your camera especially sensitive. I wonder what accoun..." | Read more » | over 8 years ago | |||
| cindy_excites | "Ah, yes, that makes a lot of sense, thank you Ethan! I used the part which seemed to have the least purple residue - leftover from the disc separat..." | Read more » | over 8 years ago | |||
| ethanbass | "Hi, in regards to your question about the placement of the DVD fragment, I think the idea is to align your camera so that it is pointed as close to..." | Read more » | over 8 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 » | over 9 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 » | over 9 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 » | over 9 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 » | over 9 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 » | over 9 years ago | |||
| mathew | "i like your re-adjustable grating angle setup. real nice. " | Read more » | over 9 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 » | over 9 years ago | |||
| Guillaume123 | "Markdown " | Read more » | over 9 years ago | |||
| warren | "Exciting! " | Read more » | about 10 years ago | |||
| sekjal | "Can't wait to get my hands on the updated version and build some sweet Lego cases/containers/contraptions! " | Read more » | about 10 years ago | |||
| donblair | "And here's a nice way of doing color mixing using a ping pong ball as a diffuser: https://teachers.web.cern.ch/teachers/archiv/hst2005/part_sessio..." | Read more » | about 10 years ago | |||
| sonofaquark | "Hi, When speaking of "calibrating wavelength", what Wiebew is referring to is the mapping of the colors of the rainbow onto the horizontal axis of..." | Read more » | about 11 years ago | |||
| itdaniher | "I wonder if it would be possible to calibrate wavelength against the sensor's own sensitivity to R/G/B light of different spectrums? If you provide..." | Read more » | over 11 years ago |