Open Stoft1 opened 9 years ago
Starting to explore pseudocode or stepwise procedure for ths sort of correction here: http://publiclab.org/notes/stoft/03-06-2015/plab-3-gain-correction#c11453
Going to use $.get(url, function() { });
using https://i.publiclab.org/system/images/photos/000/013/573/original/GCalPLab3Solux4700K_400-650nm.txt from https://publiclab.org/notes/stoft/03-06-2015/plab-3-gain-correction
This can now be run in v2.1.7; using:
SpectralWorkbench.API.Core.useReference(false, spectrum);
graph.reload_and_refresh();
default is "/references/solux-4700K-stoft.csv" and there's also "/references/solux-4700K-rolloff-stoft.csv"
This is now working basically in v2.1.9 -- however we need a better UI.
Hi, Dave - sorry, i've been busy. Just wanted to get your input on "gain calibration" as terminology. Would "exposure calibration" be an equivalent term?
After some experimentation ( http://publiclab.org/notes/stoft/02-25-2015/plab-spectrometer-gain-correction ) it looks possible that a default gain-correction curve could be included as part of SWB at least as an option. While there are significant limits to the PLab devices from the intensity vs. wavelength calibration, as a true calibration, a first-order approximation seems like a major improvement in the direction of providing users with more meaningful spectral results. As an adjunct to this, it might be helpful to add graphical markers at the wavelength limits -- i.e. ~400nm and ~700nm as beyond these limits the noise takes over as the camera has virtually no relative sensitivity.