Instrument Response In a previous blog I have described a Python script with a GUI for calibrating and processing meteor spectra. The spectrum calibrated in wavelength is still not the final result of the processing. One would like to have a plot of energy against wavelength. Unfortunately the measured intensity is influenced by detector sensitivity, … Continue reading Update for meteor spectra processing with Python
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Perseid meteor spectrum at OHP
Spectroscopy workshop at OHP Every year, a spectroscopy workshop is held at the site of the Observatoire de Haute Provence, where around 50 spectroscopists, beginners and experts, meet for a workshop with lectures during th day and observing during the night (www.shelyak.com/ohp-spectro-star-party-2019). I used this opportunity to record meteor spectra in a clear sky and … Continue reading Perseid meteor spectrum at OHP
Meteor spectra analysed with Python
Summary This manual explains the use of a Python script for the analysis of video meteor spectra. The theory behind it has been described in (Dubs and Schlatter, 2015): meteor_spectroscopy_wgn43-4_2015.pdf). Until now, the method had been applied successfully to analyse meteor spectra obtained with high sensitive video cams such as the Watec 902 H2 ultimate … Continue reading Meteor spectra analysed with Python
M20171209 spectrum by Koji Maeda analysed
Meteor Spectrum Calibration Example Introduction Meteor spectra can give a lot of information about the meteor, such as composition and temperature. However, for amateurs the calibration of the spectra is not easy. Here a method is given for grating spectra recorded with a video camera, which produces linear spectra with constant dispersion. The method uses … Continue reading M20171209 spectrum by Koji Maeda analysed
Meteor spectra 2022
Another year has passed with many meteor spectra. As in the last year (2021), here is the report of these spectra, recorded at Maienfeld during the year 2022 Meteor spectra 2022 The spectra were recorded with a DMK 33GX249 camera from The Imaging Source (thanks to Roger Spinner for giving me this camera), equipped with … Continue reading Meteor spectra 2022
Synthetic meteor spectra
For the analysis of meteor spectra it is useful to generate synthetic meteor spectra and compare these with observed meteor spectra. By adjusting the intensities of different atomic species of the meteor and atmospheric oxigen and nitrogen, it is possible to disentangle the complex meteor spectra with overlapping lines. The meteor spectra also contain a … Continue reading Synthetic meteor spectra
Meteor spectra 2021
Another year has passed with many meteor spectra. As in the last year (2020), here is the report of these spectra, recorded at Maienfeld during the year 2021 meteor-spectra-2021Download The spectra were recorded with a DMK 33GX249 camera from The Imaging Source (thanks to Roger Spinner for giving me this camera), equipped with a Kowa … Continue reading Meteor spectra 2021
Creation and use of flat field for meteor spectroscopy
In astro photography and spectroscopy a flat field is often used to correct for variations of sensitivity over the image sensor. It is applied by dividing the original image by a suitable flat field image, thereby reducing or eliminating these sensitivity errors. The flat image is obtained with the same optics by taking a short … Continue reading Creation and use of flat field for meteor spectroscopy
Atmospheric extinction, Python processing
In a previous blog I have described the use of instrument response for the flux calibration of meteor spectra. One would like to have a plot of energy against wavelength. Unfortunately the measured intensity is influenced by detector sensitivity, grating efficiency, transmission of optics (window, lens, filters) and atmospheric transmittance (all wavelength dependent). The basics … Continue reading Atmospheric extinction, Python processing
Spectroscopy 