SPECTROSCOPY

INTRODUCTION

EQUIPMENT & TECHNIQUES 

RESULTS

LINKS

 

I HAVE BEEN INVOLVED IN SEVERAL PRO-AM COLLABORATIONS.  

HERE IS A LIST OF RESULTING PUBLICATIONS 

 
 

IF YOU ARE NEW TO SPECTROSCOPY THEN YOU MIGHT FIND THIS PRESENTATION OF INTEREST

It was part of a British Astronomical Association Variable Star Section Workshop and covers the equipment I use for low and high resolution spectroscopy and describes how spectra are converted into scientific data. It also includes some useful links

 

IF YOU HAVE A DIGITAL SLR CAMERA THEN THIS SIMPLE TECHNIQUE USED TO TAKE SPECTRA OF BRIGHT STARS MIGHT BE OF INTEREST

 
 
MY SPECTROGRAPHS 
 

THE STAR ANALYSER - A SIMPLE LOW RESOLUTION SPECTROGRAPH

 I first started experimenting with spectroscopy in late 2002 using a 100 lines/mm transmission grating bought from the educational supplies company Jeulin in France, which I came across on Christain Buil's website here http://astrosurf.com/buil/us/spe1/spectro3.htm It was mounted in a 50x50mm glass slide and, unusually for an inexpensive grating, it was blazed which increased the efficiency (most of the light is diffracted into one of the first order spectra.)

In late 2004, I eventually traced the manufacture of this grating to Paton Hawksley in the UK and after discussions with them, the idea of an affordable filter cell mounted grating, specifically designed to be easy to use with a range of CCD cameras, was born. This became the Star Analyser 100.

In 2013 I developed a low profile 200 line/mm version, the (SA200-F) for use in filter wheels and other situations where it is difficult to find enough space for the SA100

I never cease to be amazed at what can be done with such simple equipment, such as identifying supernovae types, detecting molecules in comets and measuring the redshift of Quasars.

 

THE LHIRES III - A HIGH RESOLUTION SPECTROGRAPH

I also have a high resolution (R=17000) capability for bright objects, thanks to an LHIRES III spectrograph purchased in 2006 as a kit from the French AUDE amateur astronomy group and now available commercially from Shelyak Instruments  See here for more details

 

THE ALPY 600 - A LOW RESOLUTION SLIT SPECTROGRAPH

Purchased in 2013, this  spectrograph covers the full visible spectrum at ~10A resolution. With  mirror slit guiding  and a remotely operated calibration module, no manual adjustments are needed, making this an ideal spectrograph for remote operation

 

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