cloud-free sky but with high humidity, low transparency and a bit of fogging, I still opened the observatories for comet observations and capture spectra in High resolution. Comets that were observed are: 43P, 130P, 190P, 338P, 487P, 493P, C/2021 S3, C/2022 N2, C/2023 A3, C/2023 N3 and C/2024 J2. spectra obtained are: gam Cas for H-alpha and HeI @ 6678 Angstr., Electra, Pleione, CT Cam . After midnight I closed the observatories due to fog rising too strongly
comet and spectroscopic observations on 10 oct 2024
a rare clear night was the trigger to make comets and spectroscopic observations once again. I was able to observe 7 comets including: 54P, 493P, C/2021 S3, C/2022 N2, C/2022 U1, C/2023 R1, C/2023 V1. Using the 2nd observatory for high-resolution spectroscopy, 2 spectra were recorded of Be stars QR-Vul (in outburst) and pi Aqr.
spectroscopic observations on 3 oct.
for a observing project, i could obtain 2 sepctra of Be-stars: QR Vul and V442 And.
spectroscopic observations on 1 oct.
To prepare for participation for an observing project, I observed gam Cas with the high-resolution spectroscope for both H-alpha line and the HeI line (@6678Á). (project starts on 1 November)
spectroscopic observations on 19 sept.
i could obtain 2 spectra of Be-sterren in hoge resolutie voor H-alpha gebied: EW Lac en 12 Vul
comet and spectroscopic observations on 27 august
It promises clear skies for the whole night and the moon phase is now about 0.35, so also less disturbing. I had prepared the observatory and set up a whole programme of observations. However, around 1 a.m. the focuser refused service and further observations stopped. The following comets could still be observed: 13P, 125P, C/2019 T4, C/2021 S3, C/2021 X1, C/2022 U1, C/2023 V4. In the evening i could simultaneous obtain 2 spectra in high resolution in the H-alpha area of Be-stars: 28 Cyg ( 4 x 1200 sec exposures) en pi Aqr ( 3 x 1200 s. exposures) (observations made with C11 + LHIRESS III spectrograph with 2400 l/mm grating)
spectroscopic observations on 14 july
During this clear night, i obtained High Resolution ( R~15.000) spectra of Be-stars for the H-alpha region: V1339 Aql, V1466 Aql.
comet and spectroscopic observations on 10 july
spectroscopic observations on 7 july
During a short period of clear sky, i could obtain a high resolution spectra for H-alpha region of Be-star QR Vul.
comet and spectroscopic observations on 19 june.
the nights are now about the shortest of the year. It only gets really dark around 0:30UT. It was pretty much clear, with a cloud here and there. The 95% moon was interfering though, resulting in only an SQM in the zenith of 18.8. 2 comets: C/2019 T4 and C/2021 S3 were observed. 2 spectra of H-alpha region in high resolution, of Be stars: 58 Cyg and HD 208682 could be obtained.
