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
New publication about meteor spectroscopy
The method of using an orthographic transformation to linearize spectra is getting used more frequently. A research group from the Beijing National Observatory of Space Environment in China has used the method for the analysis of video meteor spectra and is publishing the results now. Sipeng Yang et. al., MIOS optical subsystem for determining physical … Continue reading New publication about meteor spectroscopy
Spectroscopy 