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comet observations on 8 april

with the repaired SBIG STL6303 camera I was able to perform a test tonight, unfortunately strongly interfering moon on the high cloud strings. I observed some comets: 29P – unfortunately images unusable due distrubing moonlight in combination with high clouds. comet C/2023 H5, these images were usable for further analysis. The ccd camera did its job flawlessly.

Technical issue on 6 april

When is was imaging i noticed a problem with the filterwheel of my SBIG STL6303 camera. while turning, the filter wheel suddenly jammed. After I disassembled and checked the filter wheel, at first glance there appeared to be no problem. After replacing it, it still worked unsteadily. Next day after further checking, cleaning and checking the motor and cleaning the motor shaft, it came back to life reliably.

comet and spectroscopic observations on 27 march 2025

it was a nice sunny day, towards evening high veil clouds appeared and disappeared late in the evening. However, it remained a low transparent sky. A few comets could be observed, with my 0.4-m f/3.8 newtonion telescope, including: 29P, C/2022 QE78, C/2023 H5 and C/2023 Q1, all images with photometric Bessel-R filter. With the 11″ Cassegrain telescope and LHiReSS III spectrograph I was able to capture spectra of PZ Gem ( 7 x 1200 sec exposure) in high resolution in H-alpha region. All my spectra could be seen and free downloaded in the BeSS-database after they are approved.