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...
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...
Spectro Party OHP 2018 : retrospective

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...
AG Draconis, Shelyak Spectros in the spotlight

AG Draconis, Shelyak Spectros in the spotlight

AG Draconis, Shelyak Spectros in the spotlight !By Olivier Garde AG Draconis is one of the most fascinating stars to observe, particularly through spectroscopy. This binary system consists of a red giant star and a white dwarf star. Every ten to fifteen years, it...
Planetary nebulae confirmation

Planetary nebulae confirmation

Planetary nebulae confirmationBy Olivier Garde Recommanded equipment : Alpy, Lisa Time :  about 4 h For several years, amateur astronomers have been discovering probable planetary nebula candidates thanks to their own images or by scrutinizing professional surveys...
The french magazine “L’Astronomie” #91

The french magazine “L’Astronomie” #91

The french magazine “L’Astronomie” #91   A french magazine publishes a long series of article on planetary nebulae and one in particular on the use of our spectrograph(s) to confirm the nature of newly discovered nebulaes… How amateur...
One week-end dedicated to Spectroscopy, organised by BAA

One week-end dedicated to Spectroscopy, organised by BAA

One week-end dedicated to Spectroscopy, organised by BAA Attendees at the Spectroscopy Workshop, from left to right : David Salmon, George Faillace, Gareth, Cottrell, Ann Davies, Richard Green, Alain Barthez, Francois Cochard, David Boyd, Steve Cuthbert, Nick...
Scientific papers, radial velocities and eShel

Scientific papers, radial velocities and eShel

Scientific papers, radial velocities and eShel   SHELYAK Instruments has sold many eShel to professional observatories around the world. The results enable our clients to advance science with paperss. We do not systematically refer to these papers because there...
Making Science with an Alpy

Making Science with an Alpy

Making Science with an Alpy The last paper in Astronomy & Astrophysics magazine (A&A) “New outburst of the symbiotic nova AG Peg after 165 years “ is based on spectra collected by observers from all around the world (12 nations represented) with Hubble,...
Spectro Star Party OHP 2017

Spectro Star Party OHP 2017

Spectro Star Party OHP 2017 Like every year for more that 10 years, we actively participated to the OHP 2017 spectro star party. This meeting takes place in the wonderful site of Observatoire de Haute Provence (http://www.obs-hp.fr/welcome.shtml). This year, it was...
Spectroscopy : practical guide

Spectroscopy : practical guide

Spectroscopy : practical guide The french version of the book is now a reference in the Astronomical community. It has been rewarded by a lot of great comments from readers, and papers in magazines. It is now available in english : Successfully Starting in...