again a clear night. i could start around 23h local time in evening twilight with capturing a spectrum of alpha Draconis (spectroscopic double starsystem) in h-alpha region in high resolution (R~15000) with LHiRess and C11 setup, exposuretime was 6 x 600 sec (STAROS-project – This database concerns the star alpha Draconis (Thuban, HD123299), a relatively bright spectroscopic binary of type A0III (V=3.68), with an orbital period of 51 days.). After this star, i observed Be-star 10 Cas and exposuretime was 2 x 1200 sec. data for the BeSS database.
spectroscopi observation on 13 june
still very clear night with good transparancy. I took a spectrum in high resolution of H-alpha region of alpha Draconis in participating of the STAROS project.
spectroscopic observation on 10 june
a clear grey night (sun hole not lower than 18° below the horizon) again a high-resolution spectrum in H-alpha region of Alpha Draconis for STAROS project
spectroscopic observation on june 8.
It gets dark later and later each time and last night started high resolution spectrum of Alpha Dra for HR spectrum in H-lapha region. data can be found in the STAROS database .
spectroscopic and comet observations on 4 june
a clear night but cocktail of low transparancy, wind gusts and almost full monn (99%) disturbing ths observations/ comet that where observed are: 12P, 80P (not found), 103P (not found), C/2019 T4, C/2020 R7, C/2020 S4, C/2022 L2, C/2022 Q2 (uncertain), C/2022 V2, C/2022 U4, C/2023 E1. Spectroscopic observation for H-alpha region in high resolution (R > 15.000) of Alpha Draconis for STAROS project.
comet observations on 17 may
spectroscopic and comet observations on 25 april
a clear night as start was perfect to start with some observations. Comets that could be observed are: 65P, 118P, 119P, 180P, C/2019 U5. after the last comet, i must close the observatory due incoming clouds. With the C11 + LHiRess spectrograph i could obtaihne 2 spectra of the H-alpha region in high resolution of Be-stars: HD 175863, teta CRB.
spectroscopic and comet observations on 18 april
Comet and spectroscopic observations on 2-3 april
a very clear night but with moonphase of 0.91 we had disturbing moonlight. SQM @ zenit was 18.9. I could observe some comets: 29P, 364P, C/2019 U5, C/2020 R7, C/2022 L2 and object C8AY5Y2 mentioned on the PCCP. Spectroscopic observations in high resolution (R = ca. 15000) were made from emission B-stars: 53 Boötis, kappa Draconis and CQ Ursa Major with my C11 + LHiRess III spectrograph with 2400 l/mm grating.