| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Sunwukong - I would love to see a pic of your setup; is it connected to a telescope? " | Read more » | about 11 years ago | |||
| cfastie | "Sunwukong, You can download the data from any spectrum at SpectralWorkbench.org. So at this page for one of the nicer CFL spectra from Ebert, you c..." | Read more » | about 11 years ago | |||
| sunwukong | "Do you have a data source for the intensity, pixl, wave length for the CFL in this image. Pictures are beautiful. I have a similar setup using so..." | Read more » | about 11 years ago | |||
| warren | "Wait, 200nm? Can you post a spectrum you captured with this new setup? Cool! " | Read more » | almost 12 years ago | |||
| sonofaquark | "thanks, that's where i'll start. you guys are doing great work! " | Read more » | almost 12 years ago | |||
| warren | "You should reach out on the spectrometry list and perhaps form a team for the Spectral Challenge! (http://spectralchallenge.org) " | Read more » | almost 12 years ago | |||
| sonofaquark | "I am interested in roughly the same end, but it is not simple to detect these chemicals optically. It can be done however, by looking at the absor..." | Read more » | almost 12 years ago | |||
| Smokey45 | "Ok, thanks Jan! " | Read more » | almost 12 years ago | |||
| pluharj | "It really depends what you wish to measure. For example some algae change color of water, so you can measure them directly. I would suggest first o..." | Read more » | almost 12 years ago | |||
| warren | "Again, super write-up. Some thoughts that might be helpful: for cfl calibrations without moving the device -- what about putting a small mirror o..." | Read more » | almost 12 years ago | |||
| Smokey45 | "Dear Jan, Thank you for your reply. It is good to know that I need to add an indicator. Now I need to figure out what is possibly in the water that..." | Read more » | almost 12 years ago | |||
| pluharj | "Dear Smokey, as explained earlier, this spectrometer can read light intensity in spectral range 400 - 900 nm which is mostly visible light. So you ..." | Read more » | almost 12 years ago | |||
| cfastie | "Hi Spectralod, Your long tube CFL spectrum is calibrated correctly. I am not sure why you are not getting more distinct peaks with regions between ..." | Read more » | almost 12 years ago | |||
| spectralod | "I should have also said that I don't understand this website. It's all over the place. Is there one of those standardized forums you could use inst..." | Read more » | almost 12 years ago | |||
| spectralod | "How do you calibrate anything? I haven't figured this out yet. I don't have 3 blue wavelengths to choose from...I don't know which other green wave..." | Read more » | almost 12 years ago | |||
| Tom_H | "Chris, I also noticed the 405nm line was all but absent in your spectrum, and that is one reason I brought up my previous experience. I came acros..." | Read more » | almost 12 years ago | |||
| cfastie | "Tom, How did the CFL lines drop off in your earlier spectra? I have noticed that my spectral images taken with P&S and DSLR cameras do not reco..." | Read more » | almost 12 years ago | |||
| Tom_H | "Chris, How did you overlay the spectral image on the Excel graph? There is another way to extract data from the camera image: Use a software that..." | Read more » | almost 12 years ago | |||
| Tom_H | "Good job. I am inspired to work on a similar project. I love the way you recycle what most see as junk! A man after my own heart. I made a spect..." | Read more » | almost 12 years ago | |||
| warren | "Wow, i did not regret that. " | Read more » | almost 12 years ago | |||
| cfastie | "You tell me. " | Read more » | almost 12 years ago | |||
| warren | "If i watch the video, will I know why the post is named "Ebert"? " | Read more » | almost 12 years ago | |||
| straylight | "rather nice. I need to lift my game ! :) " | Read more » | almost 12 years ago | |||
| gonzoearth | "It looks awesome. I look forward to trying lots of these tweaks! " | Read more » | almost 12 years ago |