during a short period of clear sky i could obtain a spectrum of HD 24479 for H-alpha detail @ 6562.8Å.
comet and spectroscopic observations on 7 may 2021
The weather forecasts foresaw about 2 hours of clear sky, which I used to be able to observe 2 comets after all: C/2020 R4, C/2021 A1. With the C11 telescope + LHiResIII spectrograph, I was able to simultaneously observe 2 Be stars in the spectrum for H-alpha detail (@ 6562.8Å), these were: cx Draconis, theta Corona Borealisae.
new comet C/2021 E3 (ZTF)
This observation was made, while this object was still mentioned on the PCCP of the MPC. Observation in the morning of 17 march @ 2h07m UT with my 0.4-m f/3.8 Orion Optics AG16 telescope with SBIG STL6303E CCD-camera. 30 unfiltered images of 120 sec each were taken and stacked into 2 groups of each 15 images and has magnitude of about 19.5. The object showed a central condensation with a hint of a short tail on both images, which was visible with the ‘blinking’ function in the software. This comet was later on 6 may assigned as comet C/2021 E3 (ZTF).
spectroscopic and comet observations on 2 may
during this clear evening i could observe some comets, I can only start later in the evening because of the sun going down later and later at this time of year. coemts that could be observed are: 117P, C/2017 K2, C/2020 R4, C/2020 T2 . With the LHiResIII high resolution spectrograph, I was able to observe the following stars: Sheliak, HD 112028, HD 50658, 18 Lyr.
spectroscopic and comet observations on 1 may
spectroscopic and comet observations on 30 april
during this clear evening i could observe following comets: C/2020 R4, C/2020 T2, C/2021 A1. With the C11 + LHiResIII spectrograph i could obtain spectra from several stars: HD 112028, kap Dra, FF Cam
spectroscopic and comet observations on 29 april
a clear evening again, i could observe some comets: C/2020 R4, C/2020 T2, C/2021 A1. High-resolution spectra could obtained from following stars: omi Her, gam Cas (H-alpha detail), gam Cas (HeI-detail @ 6678 Å).
spectroscopic observations on 27 april
during a shorter period of clear sky i could observe some stars for high resolution spectr of H-alpha detail: bet Cmi, 5 Crc.
comet and spectroscopic observations on 25 april
during this evening , with disturbing moonlight) i could observe some comets: 168P (not found), C/2010 U3 (not found), C/2020 T2, C/2020 V2, C/2021 A1. With the high resolution spectrograph i could obtain spectra of following stars: gam Cas (H-alpha detail @ 6562.8 Å), gam Cas (HeI detail @ 6678 Å), Alfirk, 53 Boo, 45 Cas.
comet remote observation on 25 april
WIth a Telescope.Live 0.61-m f/6.5 remote telescope from Rio Hurtado, Chile, i could observe comet 67P
