VV Cep with ESP (R=30000)

VV Cep 2017-2019 Campaign
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Olivier GARDE
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Joined: Thu Sep 29, 2011 6:35 am
Location: Rhône Alpes FRANCE
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VV Cep with ESP (R=30000)

Post by Olivier GARDE »

Here's a spectrum of VV Cep taken with ESP Spectrograp (R=30000). The total bandwidth of ESP is about 3850 to 7600 Å in more than 40 orders.
I didn't have enough flux in the blue to reach the H and K lines of calcium with a good SNR. Next time, I will increase total exposure time.

The full spectrum (orders from 48 to 84)
Image

Comparison with my last spectrum taken in august 2016 with eShel spectrograph (R=11000) corrected from heliocentric velocity
Image
LHIRES III #5, LISA, e-Shel, C14, RC400 Astrosib, AP1600
http://o.garde.free.fr/astro/Spectro1/Bienvenue.html
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