A GTC study of the afterglow and host galaxy of the short-duration GRB 100816A
We present the results from an optical monitoring campaign aimed at studying the afterglow properties of the short GRB 100816A. We implemented a new way of...
The Owl Nebula (NGC 3587) is a double shell nebula. An additional faint halo is recently found in interference filter CCD images (Kwitter, Chu, & Downes 1992...
A high spectral resolution catalog of emission lines in the visible spectrum of comet C/2020 F3 (NEOWISE)
Comets are primitive bodies left over from the formation of the Solar System. Formed at large distance from the Sun, comets have been preserved at low...
A high-resolution spectrograph for the solar telescope GREGOR
This communication shows the design, layout, mounting and start-up of a high-resolution grating spectrograph for VIS-NIR at GREGOR 1.5m Solar Telescope...
A High-Resolution Spectroscopic Survey of β Cephei Pulsations in Bright Stars
We present preliminary results of our high-resolution (R≥50000) spectroscopic survey of line-profile variations in stars with spectral types similar to β Cephei...