CHARA/VEGA observations at Mt Wilson

Some complementary Halpha spectra requested !

Saturday 21 November 2009 by Philippe Stee

Dear Friends,

we are currently observing Gamma Cas and 48 And and AB Aur (an Herbig Ae star), HD 43445 (Theta Ori) from November 17 to 22, 2009 with the CHARA interferometer ( ) and the VEGA instrument (

We are working on some calibration issues regarding our spectroscopic data, especially on Gamma Cas.

Thus, if someone can take a few spectra on gamma Cas centred on Halpha it would be very helpful.

Thank you very much for your help,

With my best regards,

Philippe Stee

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