As a B7 class star toward the cooler end of that class, Elnath shares similar spectral features to a slightly cooler A class star like Vega (A0V) - primarily the deep Hydrogen Balmer absorption lines. The main visible difference with Elnath vs Vega is that the peak of the spectrum shifts farther left here into near UV beyond the blue edge of the spectrum, while Vega's peak is closer to 4000 Angstroms.
Spectrum of the B7III class blue giant star Elnath (Beta Tauri) taken last night. Shelyak Alpy 600 spectrograph and @celestronuniverse.bsky.social EdgeHD 800 on an AVX mount.
#celestron #spectrum #starrysky #spectroscopy #taurus #shelyak #winterstars
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