News
Spectro Party OHP 2019 : retrospective
Retrospective of Spectro party 2019 at OHP, photos, spectra and more…
How I go about planning the acquisition and logging of a stellar spectra ?
I use the software package AstroPlanner by iLanga, Inc. for my initial planning. I have added approximately 75 stars which contains all the information I need to plan the acquisition.
Study of a spectroscopic binary with amateur setup
In this article, I will try to show you that amateur astronomers can achieve remarkable results in the astrophysical study of the stellar world.
A compact telescope shelter
Workshop au Nouveau Mexique les 22, 23 et 24 février 2019
Spectroscopy Whorkshop SMSW-2
Spectro Workshop in New Mexico on February 22, 23 and 24, 2019.
Magnitude 17 with a LISA
Using a LISA spectrograph on a large diameter telescope.
The Whoppshel, a high resolution echelle spectroscope
The Whoppshel, a high resolution echelle spectroscope (about R=30000)
Nearby or in thousands of km, take control of your calibration & flat lamps for Alpy, Lhires III and LISA.
SPOX module : to remotely control the flat and calibration lamps for Alpy 600, Lhires III and LISA.
Quasar spectrum with a Lisa or an Alpy
Realize a spectrum of a very weak object with a LIsa or an Alpy, it is possible.
Spectro Party OHP 2018 : retrospective
Retrospective of Spectro star party OHP 2018, photos, spectra and more…
Improved performance of the eShel spectroscope
eShel II: a new optimized doublet “bespoke” for the blue end
AG Draconis, Shelyak Spectros in the spotlight
Spectra made with Shelyak spectroscopes were used in a publication on the symbiotic star AG Draconis.
Planetary nebulae confirmation
How to confirm a planetary nebulae candidate ?
One week-end dedicated to Spectroscopy, organised by BAA
o promote astronomical spectroscopy, British Astronomical Association (BAA) organised last year a program including financial help for buying spectroscopes (Alpy made by SHELYAK Instruments)
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 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...
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...
How to measure the redshift of a galaxy ?
Comment mesurer le redshift d’une galaxie lointaine avec un spectrographe basse résolution.
Symbiotics stars
Symbiotics stars Recommended equipment : Star Analyser, Lhires III, eShel, Alpy, Lisa Time : one night or a life time ! Summary Symbiotic stars are interacting binary red giant & hot stars. The red giant loose material which is accreted by the hot star...
Del Sco : 2011 campaign for periastron
Del Sco : 2011 campaign for periastron Be stars are hot, non supergiants stars whose spectra have shown or still show spectral emission in Balmer line - typically Halpha. Those emissions comes from material around the star - often an equatorial disk or ring. Those...