Affiliation
American Association of Variable Star Observers (AAVSO)
Fri, 01/31/2020 - 20:31

AAVSO Alert Notice 694 announces a spectroscopy observing campaign on the very bright Be star gamma Cas. Please see the notice for details and observing instructions.

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

Affiliation
American Association of Variable Star Observers (AAVSO)

In a note I added to Alert Notice 694 on gamma Cas on May 21, I said that Principal Investigator Ernst Pollmann was particularly requesting higher-resolution spectra of gam Cas. However I said the requested resolution was 1000 or higher, when I should have said 10000 or higher. My apologies for this error.

Good observing,

Elizabeth

Affiliation
American Association of Variable Star Observers (AAVSO)

AAVSO Alert Notice 707 contains an update of Ernst Pollmann's spectroscopy campaign on gamma Cas and gives the science behind his request and also shows some spectra of the line he is studying. Please see the notice for details and observing instructions.

DISCUSSION OF THIS CAMPAIGN MOVES TO THE THREADS FOR ALERT NOTICE 707 - please post your comments and questions there.   (Please do not use this link from from Alert Notice 694 any longer.)

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ