VV Cephei Corrected

[Albert Stiewing]

I have mirrored all my data and reprocessed. Comments welcomed.

[Peter Somogyi]

Hello Albert,

By picture looks ok, however the '3 x 1800 s' is typically '3 x 180 s' with my 12" scope. Was it mistyped?

Cheers,
Peter

[Olivier GARDE]

HI Albert,

Your spectrum look good (I can't check the wavelengh calibration on the graph) except the continuum who should be at one.

And the same question as Peter: if you need to do 3 exposures of 1800s to get this spectrum whose magnitude is about 4.9, there is a problem in your set up.

With an eshel spectrograph I need only about 10 exposures of 120s to get a SNR about 100.