Astronomical Ring for Access to Spectroscopy

Discover ARAS!...
 

BeSS data base
The database of Be stars spectra. GEPI (Observatoire de Paris-Meudon).

ArasBeAm
ArasBeAm is the website dedicated to Be stars amateur observers. Its goal is to organize the spectroscopic observations of Be stars by amateurs from all over the world. 

Collaborative surveys
CI Cyg
Find Be stars targets for the night
HD57682 flares
V407 Cyg
Nova Vul 2007

Spectrograph conception
Parameters for design of a spectrograph
LHIRES project
Barèges, a ready-to-build spectrograph
A Barèges type spectrograph
SBIG SGS Spectrograph Review

Some astrophysics
Spectral types
Diagram HR
Be stars
S & C stars 
Wolf-Rayet stars 
Carbon Stars
Supernovae
Planetary Nebulae
Quasars

Softwares
VisualSpec
SpIRIS
SpcAudace
PRiSM
Astro-Linux

CI Cyg

V407 Cyg outburst

HD57682 flares

OHP 2008 spectroscopic school: the movie! 

 
Use LHIRES III with a digital SRL

Technical note: Processing of DSLR RAW images

Technical note: Intermediate resolution with LHIRES 

Technical notes

List of test stars for LHIRES III spectrograph
Definition of LHIRES III data products
LHIRES III - SpIris processing tutorial
LHIRES III project - Description
Working session with the 1200 g/mm grating 
Adjustment of the "Exposure Time Calculator" parameters
Extraction of the spectral response
How to take a flat-field? 
Accomodation of LHIRES III on the 0.6 m telescope of Pic du Midi observatory
LHIRES III on a Takahashi FS128 refractor
Image quality of LHIRES III
Focusing stars methods on the entrance slit of Lhires III
COROT Be stars survey project
OHP 2007 spectroscopic school
OHP 2008 spectroscopic school  
Interference fringings analysis by Peter Schlatter    
Atmospheric extinction and faint Be stars
Some advices about the use of Star Analyser spectrograph
Economic spectral calibration lamps  NEW !