weather conditions during the early evening were selct, cloudy and high overcast. However in the late evening there was a brief period of clearing, albeit with poorer transparency. 3 comets could be observed: 29P, C/2023 H5, P/2023 S1
comet observation on 18 febr.
in the early evening there were disturbing high clouds that interfered too much with observing. Later in the evening there was a brief clearing and I was able to observe comet 29P for an hour.
Comet and spectroscopic observations on 17 febr.
new comet C/2025 B2 (Borisov)
While this object (gb00784) was still mentioned on the PPCP of the minor planet center web page, I was able to detect this object on jan. 30 with my 0.4-m f/3.8 telescope with CCD-camera and clear filter were 40 images of 120sec each are taken. After stacking, I was able to detect the object. It appears to me to be an asteroidal apparition. Unfortunately, conditions were not good to detect any comet features such as coma and whether or not it had a tail. A nearby bright star made this impossible for me. Later this object was assigned as comet C/2025 B2 (Borisov) with CBET 5501 and MPEC 2025-C153.
This comet is also my 600th comet that I have observed
Comet and spectroscopic observations on 4 febr. 2025
the weather reports did not bode well, it was still clear in the early evening with light veil clouds and disturbing moon. I was able to observe 3 comets: C/2022 E2, C/2023 Q1 and C/2024 N4. Then the clouds moved in I had to close the observatoria. Also spectra in H-alpha region could be obtained from Be stars HD 22780 and BN Gem. SQM @ zenit was about 18.3 … 18.5 during the observations.
spectroscopic observations on 3 febr. 2025
the sky is not so transparent because of high veil clouds. I made no comet observations, but was able to obtain some spectra of Be stars until the sky closed completely due to drifting clouds. Be stars I was able to obtain a spectrum from are: gam Cas and PZ Gem
comet observations on 2 febr. 2025
comet and spectroscopic observations on 30 jan. 2025
Finally another clear but cold night. Following comets were observed with my comet setup. 29P , 195P, 472P, C/2022 E2, C/2022 N2, C/2022 QE78, C/2024 M1, P/2015 CD60 and an object listed on the Minor-Planet Centre’s PCCP page could be detected. However, the quality of the image was insufficient to accurately measure any comet features. The astrometric data were, however, transmitted to the MPC. With my 2nd observatory I was able to obtain some high-resolution spectra around H-alpha area of following Be stars: gam Cas, OT Gem, AX Mon and PZ Gem and are freely available there for anyone who wishes to do so on the BeSS database.
comet and spectroscopic observations on 21 jan. 2025
It was cloudy and gray all day and towards evening there were some clearings however with high clouds that brought down the transparency. Still i was able to observe some comets, albeit in very poor conditions. Comets I was able to observe were: 496P, C/2017 K2, C/2022 E2, C/2022 QE87, C/2023 X2 and C/2024 M1, then the clouds became denser and I had to stop the observations. Also with 2nd observatory I was able to obtain some spectra of Be stars: gam Cas (10 x 60sec), PZ Gem (8 x 1200 sec) and HD 22780 (3 x 1200 sec).
comet and spectroscopic observations on 13 jan. 2025
the evening began with high veil clouds, full moon and temperatures below 0°C. The cocktail of veil clouds and full moon made it difficult to observe comets. SQM was about 17.8 in zenith. comets that could be observed with my 0.4-m f/3.8 were: 43P, 333P, 487P, C/2017 K2, C/2021 S3, C/2022 E2, C/2022 N2, C/2023 Q1, C/2023 R1, C/2024 J2, C/2024 M1 and P/2023 S1. With the 2nd observatory – C11 telescope + LHiRes III spectrograph – some spectra around H-alpha region were obtained in high resolution. Be-stars where a spectra was captured were: gam Cas, PZ Gem, zet Tau, 13 Tau, nu Gem.