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 : a new version is available

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...
Study of a spectroscopic binary with amateur setup

Study of a spectroscopic binary with amateur setup

Study of a spectroscopic binary with amateur setup By David Antao David Antao started astronomy in 2001. In 2002 and 2003 he passed the CNED university diplomas, in Astronomy and Astrophysics. Long observer in visual, he begin spectroscopy in 2008, a field he knows...
A compact telescope shelter

A compact telescope shelter

A compact telescope shelterBy Olivier Garde & François Cochard The open shelter (photo : François Cochard) Having a fixed installation is a dream for many astronomers, amateurs as well as professionals. This is particularly the case in spectroscopy, because the...
Spectroscopy Whorkshop SMSW-2

Spectroscopy Whorkshop SMSW-2

Spectroscopy Workshop SMSW-2 By Olivier Garde   The second edition of the spectroscopy workshop SMSW-2 “Sacramento Mountains Spectroscopy Workshop”, was held in Las Cruces, New Mexico, on February 22nd, 23rd et 24th 2019 in the beautiful setting of...
OHP Spectro Star Party 2019

OHP Spectro Star Party 2019

OHP Spectro Star Party 2019 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. This year, the event will take place from 2sd...
Magnitude 17 with a LISA

Magnitude 17 with a LISA

Magnitude 17 with a LISA By Olivier Garde During a planetary nebula confirmation mission, we were able to use a LISA spectrograph on a 1m  telescope, the T1m “Epsilon” of the C2PU. The C2PU has 2 twin telescopes. One is named Omicron (West dome) and the...
Quasar spectrum with a Lisa or an Alpy

Quasar spectrum with a Lisa or an Alpy

Quasar spectrum with a Lisa or an AlpyBy Olivier GardeThe Lisa and Alpy spectrographs are particularly suited to the study weak objects. During the Spectro Party 2018 at OHP, we were able to realize the spectrum of a quasar of magnitude V = 16.52 with a 355mm...
OHP Spectro Star Party 2019

Spectro Party OHP 2018 : retrospective

Spectro Party OHP 2018 : retrospectiveBy Olivier Garde The Spectro Star Party at the Observatoire de Haute Provence took place from July 13th to 18th 2018 and hosted more than 45 participants from very different levels. The weather allowed us to enjoy the 5 nights...
The hunt for Be stars outbursts

The hunt for Be stars outbursts

The hunt for Be stars outburstsBy Olivier GardeBe stars are B type stars, very hot and bright (as can be Rigel in Orion for example), but that sometimes present emission lines in addition, telltale sign of the fact that they are surrounded by a disk of matter.What is...
Improved performance of the eShel spectroscope

Improved performance of the eShel spectroscope

eShel performance improvement : long live eShel II !The Hδ line (4101Å) now accessible!by François Cochard and Olivier Garde Since a few months, we offer optical fibers that have a better performance in the blue part of the spectrum. There is a lot of astrophysical...