Support Public Lab Today! For the last twelve years, Public Lab has hosted SpectralWorkbench.org so that people everywhere can calibrate and analyze their spectra. Unfortunately, current circumstances have led us to scale back and take certain services offline. SpectralWorkbench.org will go offline as of August 15, 2022. The SpectralWorkbench platform runs on a combination of volunteer and paid labor by the many people that build, maintain, and operate it via Public Lab. This is an effective combination thanks to the culture of Public Lab's Coding Community. Public Lab's web ecosystem, including PublicLab.org, MapKnitter.org, SpectralWorkbench.org, Infragram.org and associated projects, takes 20 hours a week from three Code Coordinators and our sysadmin. While cost effective, it is not free. Web hosting and server costs for SpectralWorkbench are approximately $1000 per month. We are doing our best to sustain programming and support for our community, and we need your help. Thank you for being part of our community. We can't wait to be back online with you. Support Public Lab by making a donation today. ###What is Spectral Workbench? [SpectralWorkbench.org](https://spectralworkbench.org) is a web based application to collect, archive, share, and analyze spectral data, for Public Lab [DIY spectrometers](/wiki/spectrometer) and other spectrometers. With it, you can: * connect your USB [Desktop Spectrometry Kit](/wiki/desktop-spectrometry-kit-3-0) * scan and save samples * wavelength calibrate your spectrometer * plot light intensity as a function of wavelength (average digital consumer cameras have a range of 400 to 700 nm) * create sets of multiple spectra to visually compare and analyze scans * download CSV data for offline analysis * view others' data and discuss * find similar data in [a database of over 60k spectra](https://spectralworkbench.org/stats) No download is required -- just a web connection. The Chrome browser works best, but most standard-compliant browsers are supported. It is possible to use from an Android smartphone, preferably with the Firefox browser which allows you to specify which camera to look through. **** ###Contents * [Learn to use the software](/wiki/spectral-workbench-usage) * Learn about the [available tools](/wiki/spectral-workbench-tools) * Learn about [Calibration](/wiki/spectral-workbench-calibration) * Learn about the [Snapshots system](/wiki/spectral-workbench-snapshots) * Learn about the [Operations system](/wiki/spectral-workbench-operations) * [Spectrometry in general](/wiki/spectrometer) * [Applications & uses](/wiki/spectral-analysis) * [Construction](/wiki/spectrometer-construction) * [Desktop Spectrometry Kit](/wiki/desktop-spectrometry-kit-3-0) * [Foldable Mini-Spectrometer](/wiki/foldable-spec) * [Troubleshooting](/wiki/spectral-workbench-help) * [API Docs](/wiki/spectral-workbench-api) **** ###Intro video ## Browsers Spectral Workbench should work on Chrome (in Windows/Mac/Linux/Android, but not iOS), Firefox (Windows/Mac/Linux/Android), or Opera (Android). It may work on other browsers and we are working on expanding coverage; read more on this page: https://github.com/publiclab/spectral-workbench.js/issues/87 **** ## Development Do you code? The codebase of Spectral Workbench is available at https://github.com/publiclab/spectral-workbench. The server is written in Ruby on Rails, with a lot of client side code in JavaScript. You can read about [the JavaScript API here](/wiki/spectral-workbench-api). We really need more developers, so if you are interested, please get involved! A great place to start is the "plots-dev" mailing list for software developers: http://publiclab.org/wiki/developers **** ## FAQ We're collecting and working our way through a range of questions about Spectral Workbench -- if you can contribute your own questions, or answer others', please do! [questions:spectral-workbench] **** ## Troubleshooting If you feel you've encountered a bug with the software -- very possible! Please look through existing issues listed here, file a new one if you don't see something similar, and help to add any observations to existing issues shown here. Thanks for helping improve this open source software! [questions:spectral-workbench-issues] ...
| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "I do see an error when I try -- checking out on the server now... thanks for your patience! " | Read more » | over 7 years ago | |||
| sarahcm | "Thank you so much for all your work on this site. A couple girls have been working on a Science Fair project and are stuck on this piece. " | Read more » | over 7 years ago | |||
| sarahcm | "ok, I posted the photo. The photo is uploaded, just won't calibrate. I greatly appreciate any suggestions! " | Read more » | over 7 years ago | |||
| warren | "Hi, Sara - can you post the photo you're trying up upload here? You can click here to edit your question and drag the image into the text area to ..." | Read more » | over 7 years ago | |||
| warren | "Hi, do you mean delete them from SpectralWorkbench.org? There is a deletion button on the lower left side of each spectrum page. I hope that helps! " | Read more » | over 7 years ago | |||
| Matej | "Cool! Thanks Jeff! This is helpful. " | Read more » | about 8 years ago | |||
| warren | "What I did to compare is to calibrate on a CFL, then scan a tube fluorescent, so that the methodology for calibration is the same: https://spectra..." | Read more » | about 8 years ago | |||
| Matej | "Interesting. I actually did kind of an "educated guess" calibration but I couldn't find more but one blue peak. I know that in the "usual" CFL ther..." | Read more » | about 8 years ago | |||
| warren | "Actually this looks calibrated, no? " | Read more » | about 8 years ago | |||
| Matej | "@warren: in response to: "Can you try re-calibrating this one, as I think it was calibrated during a brief bug (it shows being calibrated on 1/26/1..." | Read more » | about 8 years ago | |||
| viechdokter | "Here is what happened: The spectrometer slit was not in the center of the light beam but a little off-center. So when it was closer to the light..." | Read more » | about 8 years ago | |||
| Matej | "@ethanbass for calibration I am not smoothing the spectra. I just thought it could be helpful when comparing them and adding them to a set. " | Read more » | about 8 years ago | |||
| Matej | "Hi Jeff, Thanks for the info about the bug! I Will recalibrate right away. I discussed with Gretchen and I think I will keep using this bulb since ..." | Read more » | about 8 years ago | |||
| warren | "Just got this up -- a little late again, as usual. Please leave any feature requests, feedback, ideas or questions you have here in the comments! " | Read more » | over 8 years ago | |||
| dhaffnersr | "Hey Jeff, your right I just thought about it, it will calibrate, it's just you can't get a good fit. " | Read more » | over 8 years ago | |||
| warren | "that continuous band on the blue spectrum gives poor calibration Dave, I don't think it's quite accurate to say that they give poor calibration. T..." | Read more » | over 8 years ago | |||
| warren | "Can you try re-calibrating this one, as I think it was calibrated during a brief bug (it shows being calibrated on 1/26/16) which was since fixed. ..." | Read more » | over 8 years ago | |||
| warren | "Hi, Matej - it also looks like some of your spectra are not calibrated, or perhaps not properly? I'm seeing some not aligned. But all of them seem..." | Read more » | over 8 years ago | |||
| dhaffnersr | "Hello Matej! Those "humps" that you are getting from the daylight bulbs are the very reason I don't use them, that continuous band on the blue spec..." | Read more » | over 8 years ago | |||
| ethanbass | " " | Read more » | over 8 years ago | |||
| ethanbass | "Hey Matej, there's something going wrong with the way your second and third sets are showing up there! They've got all of those squiggles showing u..." | Read more » | over 8 years ago | |||
| warren | "Followup; this is kind of neat; this graph shows the amount of noise removed: " | Read more » | over 8 years ago | |||
| cfastie | "Correction: When I calibrate Corrected Snowy CFL (with itself), I can get a Fit as good as 5. But the two spectral images are not well aligned when..." | Read more » | over 8 years ago | |||
| cfastie | "Ah, set as in SW set! Here is one with CFL spectra from you, me, stoft, and spectra4cps: https://spectralworkbench.org/sets/3165. All of these sho..." | Read more » | over 8 years ago |