A reasonably clear evening with high humidity, so low transparency of the sky, not recommended for observing comets. I did manage to capture some spectra of Be stars: tet Crb, HD 175863.
comet and spectroscopic observations on 18 april
A clear evening after the clouds disappeared and I had the opportunity to observe some comets, unfortunately with occasional technical problems (cable that got stuck behind an obstacle and stopped the mount): 117P, 409P, 413P, C/2021 A1. With the LHiResIII spectroscope and C11 telescope some spectra of Be stars could be recorded: BK Cam, HD 24479, HD 174237, HD 195554, HD 175863.
spectroscopic observations on 17 april
dureing e short period of clear sky, i could obtain 2 spectra of Be-stars: V787 Cas and HD9612.
comet and spectroscopic observations on 16 april
The forecasts were for a full night of clear weather, so I let the 0.4-m f/3.8 newton observe comets all night and at the same time recorded some spectra of Be stars with the C11 and LHiResIII spectrograph: 7P, 9P (not detected), 99P, 117P, 156P, C/2017 K2, C/2018 N2, C/2020 R4, C/2020 S8, C/2020 T2, C/2020 V2, C/2021A1, C/2021C3, also an object ZTF0Kij was listed on the PCCP and could be detected as a ‘possible’ comet.
spectroscopic observation on 14 april
spectroscopic and comet observations on 12 april
A clear and moonless night promises to be a good night for observing. I started with comet observations, a long list to observe until the morning, unfortunately at 1 am local time clouds came in and I had to stop the observations. Comets that were observed are: 9P (uncertain due near star), 99P, 162P, 409P (clouds), C/2020 T2, C/2021 A1, C/2021 A2. With the C11 and spectrograph I could observe 2 spectra: V801 Cas and gam Cas (HeI detail @ 6678Å), each > 1 hour observation per Be-star.
spectroscopic observation on 11 april
after the clouds are gone, i could obtain spectra of Be-stars: Gam Cas for H-alpha detail @ 6562.8Å.
spectroscopic observations on 4 april 2021
a short period of reasonable brightness had been announced. I took this opportunity to record 2 high resolution spectra of: HD 208682 and Kappa Draconis.
spectroscopic observations on 1 april 2021
spectroscopic observation on march 30
The transparancy was not very well, but i could obtain 1 spectra of HD 112028 for H-alpha @6562.8 Å.
