February
20
2025

Fetching first spectra of potential upcomming reccurent nova T CrB

T Corona Borealis (T CrB) is a cataclymic binary star classfied as recurrent nova. A first outburst was observed in 1866 by John Birmingham. Potentially earlier outbursts may have been observed in CY 1217 and 1787 as well. In CY 1946 a flare up has been observed which leads to the theory of a period of rougly 80 years in which outburst can be expected. 

Therefore, it was predicted that in CY 2024 a new outburst can be expected. 

 

 

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July
14
2024

Spectra of Be Star 28 Cyg ; 2024 July 04th

This time a spectrum of 28 Cygni.
This star is also known as V1624 Cyg is a binary system with a subdwarf O star detected by interferometry.

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December
15
2023

Spectra of Be Star Psi Persei; December 03rd, 2023

Despite bad waether conditions, I got the chance to take a spectrum one more Be-Star: Psi Per.

 

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July
23
2023

Spectra of Be Star Delta Scor / 7 Sco

A recently performed spectra of Delta Scopii (Dschubba) with a C11 and a high resolution spectrograf.

 

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December
12
2022

Be Star V357 Lacerta

As part of montoring various Be stars, I've took a spectrum of V357 Lacerta in order to check requirements for potential future monitoring.
 

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