comet and spectroscopic observations on 20 april

a nice clear sky, but unfortunately a lot of wind with gusts up to 60 km/h. I tried to observe some comets, but unfortunately I had to stop at 1 comet because of problems with the mounting/telescope due to the gusts of wind. The mount went into safety because of too much deviation and then stopped. I was only able to observe comet C/2019 Y1 (ATLAS). With the C11 and LHiResIII spectrograph, this is less of a problem because it is mounted in a slit dome. So the wind has less chance to disturb the observations. Two spectra of Be starren were recorded: CQ Uma (HD 119213) and z Her (HD 162732). Each time 1 hour was recorded with 3 x 1200 sec. exposures.

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Vivaldi