This June I took the spectrometer for a weekend trip to my summer cottage and did some outdoor testing. I did most of the testing during late evenings when there was no direct sun light but sky was still relatively bright, enough to read a book. So much fun working on damp patio under the… Continue reading Field day
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Intensity Calibration, part 1
The intensity response of the spectrometer depends heavily on a wavelength in question. If we are using this device just to measure locations of spectrum peaks it does not matter much. But if we are interested in wider spectral bands or continuums and their detailed shape we need to consider the intensity calibration (term intensity… Continue reading Intensity Calibration, part 1
My proto mechanics, part 2
I decided to have the prototype of the frame block 3D-printed in a company near me. It cost about 80 euros, pretty expensive but I was busy and just wanted the project to move forward. The material is nylon, PA. By default color would be whitish, but I wanted the frame block to be black… Continue reading My proto mechanics, part 2
My proto mechanics
My friend used to say "Good optics equals good mechanics!" I don't think he was wrong so let's be careful here 😉 The task here is to position the front lens in a correct place in front of the sensor and to keep it there securely. And also to provide options for all sorts of… Continue reading My proto mechanics
Choosing the front lens
It's time to add some optics to the mini-spectrometer project. This post covers basics for choosing a front lens. Purpose of the front lens is to collect light into the spectrometer entrance slit. Since the sensor of the mini-spectrometer has already proven to be very sensitive and I want to keep the whole system mini-size… Continue reading Choosing the front lens
Experimental Photonics 