Vega with spectral analysis (Johannes D. Clausen)

Celestial hemisphere: Northern · Constellation: Lyra (Lyr) · Contains: 3 alf Lyr · HD172167 · HD172741 · The star Vega (αLyr) · Vega

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Vega with spectral analysis

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Vega with spectral analysis

Spectrum of Vega captured using the Star Analyser 100 grated filter and analyzed with RSpec.

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B

Description: Comparison of the spectra of Vega and Deneb.

Vega and Deneb are both blue-white A-class stars of similar apparent magnitude. However, Vega is a main sequence dwarf star, whereas Deneb is a supergiant. The hydrogen Balmer lines are much narrower in giant stars compared with main sequence stars, because of the lower surface gravity, which means that the gas where the lines form is much less dense, so they don't show up so well at the limited resolution of the SA100 filter used here. Furthermore, the H-alpha of Deneb also has an emission component, which is blended in with the absorption component making the line even weaker.

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Schmidt-Cassegrain Telescope (SCT) Imagers
"Nordish by nature"

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Status	Advanced success
Started	...
Astrometry.net job	3340635
PixInsight job	CJ3QVEUMAYBF8403EMMLERCDPL98BYZ0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h38m32s.706
RA (top/left)	18h35m26s.162
RA (top/right)	18h35m07s.983
RA (bottom/right)	18h41m36s.288
RA (bottom/left)	18h41m59s.999

Dec (center)	+38°45′50″.70
Dec (top/left)	+39°16′56″.34
Dec (top/right)	+38°19′53″.21
Dec (bottom/right)	+38°14′26″.52
Dec (bottom/left)	+39°11′22″.31

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Vega with spectral analysis

Vega with spectral analysis

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Vega with spectral analysis

Vega with spectral analysis

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