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Interstellar Medium

Image
About this observation
Observer
Andrew Smith
Time of observation
28/11/2017 - 21:24
Object
V373 Cas
Observing location
Delamere
Equipment
ODK 16
MRes specrograph
SXVR -H694
Exposure
12 x 600s
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V373 Cas is a B0.5 II-II hot star and this spectral class does not show absorption at the Na D doublet. The absorption here is due to the interstellar medium. I took this spectra to confirm it was the cause of the absorption in my spectra of the yellow hypergiants in Cassiopeia .

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