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, P/2019 LD2 (not detected). simultanously, i could obtain some high resolution spectra of several Be-stars: 11 Cam, HD22780, HD 24479, PZ Gem, V422 And.
spectroscopic observations on 9 dec.
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.
comet and spectroscopic observations on 25 nov.
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 of Be-stars in high resolution (R ~15000) of the H-alpha region. unfortunately, i had to struggle with some technical problems. Apparently the sensor of my CCD camera was suffering from dew formation. the high relative humidity of 89% will also be involved. However, after 2 hours, problem was partially solved and I could finally start observing comets. comets that could be observed are: 22P, 29P, 44P, 61P, 127P, 196P, C/2020 F5, C/2020 U5, C/2021 T4, C/2021 Y1, C/2022 L2. Spectra could be obtained of Be-stars: zet Tau, V581 Per, V442 And, PZ Gem, Pleione, HD 18552.
new comet P/2022 V1 (WISE-Lemmon) on 13 nov.
I observed an object, mentioned on the PCCP with my 0.4-m f/3.8 telescope and could detect and confirm the cometary activity of this object. Later was this object assigned as comet P/2022 V1 (WISE-Lemmon) via CBET 5193, issued on 2022 nov. 23
comet and spectroscopic observations on 13 nov.
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, 44P, 61P, 196P, C/2020 F5 (not detected), C/2020 H6, C/2020 U5, C/2022 E3, C/2022 L2 and an object mentioned on the PCCP. With the second setup, C11-cassegrain + LHiRess-III spectrograph, i could obtain several spectra in H-alpha region in high resolution (R~15000): PZ Gem, pi Aqr, bet Psc, 16 Peg and 8 Lac-B.
comet and spectroscopic observations on 18 oct.
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, C/2020 U5, C/2022 E3 and C/2022 L2. With my second setup of C11-cassegrain + LHiRess III spectrograph (2400 l/mm grating) i could obtaine a spectra of H-alpha region of Be-stars: V442 And, omi And , 14 Lac.
spectroscopic observations on 11 oct.
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.
spectroscopic observations on 10 oct.
Several high resolution spectra of the H-alpha region could be obtained from Be-stars: gam Cas, HD 6343, phi Per, V764 Cas.
spectroscopic observation on 9 oct.
with full moon and clear sky, i could obtain a spectra of CT Cam.
comet and spectroscopic observations on 2 oct. 2022
it was a nice clear evening after the clouds cleared. The moon phase was 0.49 but quite low on the horizon. I noticed on the SQM meter reading 19.45, normally i can get about 19.3. I have never seen this here in my backyard. Could the energy crisis be in between for something that lights get extinguished more ? Anyway… i started with some comets including: 22P, 61P, 285P, 286P, 395P, C/2019 O3, C/2020 H6, C/2020 F5, C/2022 E3, C/2022 L2. With my 2-nd setup C11-telescope and the LHiRess high-resolution spectrograph, I was able to record some Be stars a spectra. These are: V378 And, HD21620, 16 Peg and 31 Peg.
