A template for linear calibration. Enter the spectrum id, the pixel distance to each peak (zero left), and the known wavelengths for the peaks. Wavelengths for two known peaks for CFL are entered.
A macro for linear calibration based on Chris Fastie's: http://spectralworkbench.org/macro/cfastie/CalibrateTemplate. Enter the pixel distance to each peak (zero left), and the known wavelengths for the 2 peaks.
Smooths in 10 rows of data below your current sample row, and averages them. Saves! No ability yet to choose how many rows to smooth, but not hard to add.
Clip off the top and bottom 2% by area from each end of the data (averaging for multiple graphs) for a better use of graph real-estate on SpectralWorkbench.org
continuous version of https://gist.github.com/jywarren/3791c67384c88d53f155 which draws a vertical line which bisects the area of the graph equally, on SpectralWorkbench.org -- for capture mode
Calculate center of area for a graph -- draws a vertical line which bisects the area of the graph equally, on SpectralWorkbench.org. This variant only counts data between 410-700nm.
The macro publishing and sharing system is under construction. To share your macros, please email the mailing list at plots-spectrometry@googlegroups.com -- ideally with a link to your macro on gist.github.com and it will be added.
You can calibrate with a clear fluorescent spectrum like the one shown here. If the current spectrum is not usable, you can record a new one, and if you do not change your spectrometer, you can use the calibration for subsequent spectra.
First, click on the highest peak of the middle blue band:
Complete your calibration
Now, click at the peak of the green band as shown here:
Choose where to extract data from this image
To generate data, we look at the brightness of one slice of the image. Here, click on the image to choose which row to sample from.
You must be logged in to choose a sample row.
Search and compare your spectrum to others. Be aware that your device is not amplitude calibrated by default (Learn more).
CFL bulb, Air sample, slit, 500 line per mm grating
CFL reflected by 45 degree white cardboard in corner also one layer parchment over light entrance thru Air sample cuvette
Like previous three spectra except have 1 layer parchment between light reflected off corner 45 degrees white cardboard in corner for just outside box CFL
Seem peaks are a little ragged now.
Need more intensity?
Like previous three spectra except have 1 layer parchment between light reflected off corner 45 degrees white cardboard in corner for just outside box CFL Seem peaks are a little ragged now. Need more intensity?