Sn 1181, an unusual story …

Sn 1181, an unusual story …

Sn 1181, an unusual story … By Pascal Le Dû   Pascal Le Dû is an amateur astronomer who observes the sky from Brittany point in France. It analyzes and lists the candidate planetary nebulae spotted by amateurs. He maintains the basis of French discoveries...
UVEX :  Extreme spectra

UVEX : Extreme spectra

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...
RS Oph : the contribution of Shelyak spectrographs

RS Oph : the contribution of Shelyak spectrographs

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),...
UVEX, to write a new page in astronomy

UVEX, to write a new page in astronomy

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...
Spectroscopic Observations on Beta Persei (Algol)

Spectroscopic Observations on Beta Persei (Algol)

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...
Creating an image via spectral scans

Creating an image via spectral scans

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...
UVEX by Shelyak : first light

UVEX by Shelyak : first light

The UVEX by Shelyak : first light By Olivier Garde I had the opportunity to test one of the two prototypes of the UVEX version made by Shelyak Instruments. This version of UVEX differs from the “3D printing” versions already produced by several teams with...
OHP Spectro Star Party 2020

OHP Spectro Star Party 2020

OHP Spectro Star Party 2020 Every year, Association Aude and Shelyak Instruments organize the Spectro Star Party at the Observatoire de Haute Provence, in St Michel l’Observatoire, near Manosque in southern France. The event is canceled for health organization...
TimeBox : to accurately measure an occultation

TimeBox : to accurately measure an occultation

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...
Demetra 5.1 : A major development

Demetra 5.1 : A major development

Demetra 5.1 for Alpy 600 Spectroscopy has never been so simple! By François Cochard, février 2020. Demetra is the software developed by Shelyak Instruments to facilitate the implementation of Alpy 600 spectrograph, from image acquisitions to data reduction. Convinced...
How to choose your autoguiding camera in 2020 ?

How to choose your autoguiding camera in 2020 ?

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...
The Whoppshel in action on a 60 cm telescope

The Whoppshel in action on a 60 cm telescope

The Whoppshel in action on a 60 cm telescope By Olivier Garde The Hubert Reeves observatory in Mars (Ardèche – south of France)(Copyright photo : Olivier Garde) The Whoppshel spectrograph has been designed for telescopes of 0.6 to 1m in diameter class (or even...
Demetra 5.1 : A major development

Demetra : a new version is available

Demetra : a new version is available By François Cochard and Olivier Garde During the last spectro party at OHP this summer (August 2019), Many of you used Demetra software with your Alpy 600 spectrograph. You gave us some suggestions on this occasion (you also...
Spectro Party OHP 2019 : retrospective

Spectro Party OHP 2019 : retrospective

Spectro Party OHP 2019 : retrospective by Olivier Garde The Spectro Star Party at Observatoire de Haute Provence in France took place from August 2sd to 7th, 2019 and hosted more than 50 attendes from very different levels. The weather allowed us to enjoy the 5 nights...