spectroscopic observations on jan. 2 2023
during a short period of clear sky, i could obtain spectra of Be-stars: PZ Gem, lam Eri.
during a short period of clear sky, i could obtain spectra of Be-stars: PZ Gem, lam Eri.
a clear day and night after 2 weeks of cloudy and rain. i observed some comets: 29P (in outburst !), 61P, 127P, 179P, 408P, C/2020 V2, C/2021 Y1, C/2022 J2, C/2022 U2, C/2022 U3, P/2022 … Read more
during this clear night and low temperatures (-5 °C) i could obtain several spectra of Be stars: 25 Peg, HD 32188, V357 Lac, V801 Cas.
a very cold night ( temp: – 4°C) but a clear night. some spectra could be obtained of Be-stars: 14 Lac, 16 Peg, HD 22298, PZ Gem.
this evening i could after some technical issues due the very high humidity (> 90% RH) starting with observing comets. Comets wich could be observed are: 22P, 61P, 196P, C/2020 F5, C/2021 T4, C/2021 Y1, … Read more
during this clear night, but low transparancy, i obtained several spectra of Be-stars: ups Cyg, PZ Gem, HD 2012044, HD 201836, HD 23800, 48 Per.
the evening and night looks promising, with a very good transparancy and SQM of 19.2 … 19.5 , which is pretty good for my surrounding, i could observe some comets and could obtain some spectra … Read more
after a very nice day we have a clear night, with some little fog and lower transparancy and SQM about 18.9 in zenit. I could observe several comets with my 0.4-m f/3.8 newton telescope: 22P, … Read more
weatherconditions are a clear night but with low transparancy, SQM in zenit was about 19.0. comet that could be observed with the 0.4-m f/3.8 corrected newton (OO AG16) are: 22P, 61P, C/2020 F5, C/2020 H6, … Read more
with the C11-cassegrain telescope + LHiRess high resolution spectrograph (grating 2400 l/mm) i could obtain some spectra in H-alpha region of Be-stars: HD 21455, omi Cas, psi Per, V2120 Cyg.