comet and spectroscopic observations on 6 sept.

several faint comets are observed with the 0.4-m f/3.8 corrected newton (AG16 ORION OPTICS): 257P, C/2017 K2, A/2019 U5, C/2017 Y2, C/2018 N2, C/2019 T2, C/2019 U6, C/2019 LD2. With the C11 + LHiResIII spectrograph several high resolution spectra could be obtained: gam Cas (HeI @ 6678Å detail), tet CrB (H-alpha detail), 28 Cyg and HD 168957.