comet and spectroscopic observations on 23 febr.

During this clear night i obtained several comet-images with the AG16 0.4-m f/3.8 telescope : 38P, 46P, 59P, 164P, 171P, 240P, 247P, C/2015 O1, C/2016 A1, C/2018 A3 and C/2018 Y1.

spectroscopic observations are made with the second telescope 0.28-m f/10 with a LHiResIII spectrograph with 2400 l/mm grating: on request for a small project: Menkalinan and after this star i observed Be-stars: Pleione, OT Gemini, HD 9612 and 69 Orionis.

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