comet and spectroscopic observations on 4 april 2020

more or less a clear night with moonphase 85% and SQM in zenit of 17.9, o observed 2 coemts: C/2019 Y4 (ATLAS) and C/2017 T2 (PANSTARRS), also simultanously i observed 3 Be-stars for obtaining High-resolution spectra in H-alpha region with LHiResIII with 2400 l/mm grating

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