The Pulsar Engineering Community Board

Which camera model of the ProSilica are you using exactly? Exposure time is typically around ~10 seconds on the Starter Edition for precision measurement to fully expose the sensor and get the highest dynamic range but it's still possible to recognize spectra with lower exposure time, down to 100 ms...

Hi, It is possible to use the camera software directly for the alignment. At which stage of the alignment process are you stuck ? Also, but that's more of a general remark, it is not recommended to use a color camera sensor because you are throwing away more than 75% of the signal when using a green...

I don't have any names on the top of my head but there are surely some. At the very least, you can use the Matlab code that I gave here : http://www.open-raman.org/build/breadboard/assembly/ The process of converting an image to a spectra is not very complicated and can be split into two steps: (1) ...

Hello, It's possible to add support for other camera brands but you need to make a program to "bridge" the functions from the SpectrumAnalyzer software to the camera own functions. I did it for Daheng cameras and it's a couple of days of work when you know what you're doing. It however req...

Hello rama, That's a lot of questions -- I will try to answer them one by one. No questions are stupid btw and we're all here to help :) Generally speaking, professional Raman spectrometers are indeed expensive -- reason for which I started the OpenRAMAN project. On the other hand, you should not ne...

The idea of using a reference value was to compensate for small drifts in the amplitude of the applied sine wave.

I haven't test without it but when I designed the circuit I wanted to be safe and included as baseline.

The people from Strathclyde were kind enough to make a text version of the list at the bottom of the page here:

https://focalplane.biologists.com/2022/ ... f-systems/

The generic background correction method is not ideal for quantitative work.

The easiest is to export the raw spectrum in csv and, using Matlab or excel, remove a slanted line at the base of the peak. It works very well for isolated sharp peaks but it's more tricky for broader peaks.

There are two variables that can be used to define the noise of a spectrograph which are often mixed up. Here is a bit of clarity in that mix: Signal to Noise Ratio (SNR) which is technically how much noise is contained in every pixel of your data. To obtain it you typically take at least 10 spectra...

The issue with single mode fiber is that it's very difficult to couple the signal into it. And the big disadvantage of the larger core fiber is that you loose a lot of light. I remember that my boss tried to make an OpenRAMAN reproduction at the office except he decided to change the design to use a...