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Sirius spectrum

Analysis of absorption bands in Sirius spectrum recorded with Star Analyser and processed in VSPEC

Recorded spectrum

Here is a raw spectrum of Sirius recorded with DMK21:
sirius-raw-spec

Analyzed spectrum

Processed in VSPEC and calibrated on hydrogen lines the spectrum looks like this:
sirius-spectrum
Except hydrogen absorption lines there are atmospheric oxygen lines and some unknown bands at 705-715nm.
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Astronomy and Astrophotography, 11 April 2010,

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