13 Sep, 2021 | News, Technics
UVEX : extreme spectra By Olivier Garde Introduction Through this article, I will show we can do extreme spectra in the near UV and the near IR with a UVEX equipped with the standard 600 gr/mm grating. This allows to obtain resolutions from R = 820 @ 350nm up to R...
3 Sep, 2021 | News, Technics
RS Oph : the contribution of Shelyak spectrographs By Olivier Garde Introduction A Nova is a “new star” that appears in the sky. In fact, this star existed long before it was suddenly accessible to our instruments (even in a few rare cases to our eyes),...
6 Apr, 2021 | News, Technics
UVEX, to write a new page in astronomy by François Cochard We are happy to announce the arrival of a new instrument in the Shelyak range. This event is important for several reasons. It’s a sign of the dynamism of the astronomical community, which always pushes...
5 Jan, 2021 | News, Projects, Technics
Spectroscopic observations on Beta Persei (Algol) By Jörg Schirmer I had my first contact with astronomy when I was 10 years old when my grandfather gave me the book “AUS FERNEN WELTEN” by Bruno H. Bürgel from 1920. That probably fascinated me so much that...
13 Nov, 2020 | News, Projects, Technics
Creating an image via spectral scans By Lionel Mulato Lionel Mulato is an astrophotographer and spectroscopist, his observatory is based near Avignon. He studied physics at university and has been practicing astronomy as an amateur for many years. He discovered...
10 Feb, 2020 | News, Technics
TimeBox : to accurately measure an occultation By César VALENCIA-GALLARDO, February 2020 Timing of astronomical occultations and other astronomical phenomena need to be done in an absolute time scale with a precision of a few milliseconds in order to pull and compare...
24 Jan, 2020 | News, Technics
How to choose your autoguiding camera in 2020 ? By Olivier Garde & François Cochard In astronomical spectroscopy, guiding camera is an important element, since it’s what makes it possible to point the right target (star, nebula, etc.), then to ensure precise...
14 Jan, 2019 | News, Projects, Technics
The Whoppshel, a high resolution echelle spectroscopeBy Olivier Garde The Whoppshel was born from the demand of our customers to have a higher resolution echelle spectroscope than the eShel for telescopes of one meter class. The whoppshel, with a resolution R = 30000,...
19 Nov, 2018 | News, Technics
Nowadays, it is more and more frequent to remote control our telescopes. It brings some comfort but also a better quality of observation – because the less we touch the instrument, the less we risk to break the tuning. It is particularly true in spectroscopy....
