comet and spectroscopic observations on 21 july.

looks e very clear night and i could observe several comets with the 0.4-m f/3.8 Newton telescope: 115P, 257P, C/2016 Q2, C/2017 K2, C/2017 T2, C/2018 U1, C/2020 F3. With the C11 and LHiResIII i could obtain several spectra of Be-stars: 31 Peg, 25 Cyg, 28 Cyg, QR Vul.

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Vivaldi