Quote:
Originally Posted by sheeny
I think I remember a post on the Staranalyser Yahoo group about some doppler shift measurments made with an SA! It can be done, but you need a big doppler shift.
Al.
|
http://www.threehillsobservatory.co..../spectra_3.htm
http://www.threehillsobservatory.co....spectra_22.htm
http://www.threehillsobservatory.co..../spectra_6.htm
redshifts of stars in our galaxy and binary orbit redshifts are smaller though and need high resolution spectrographs. It can be done by amateurs though eg here is a paper published on a pro am collaboration I was involved in recently measuring the orbital parameters of WR140
http://www.stsci.de/pdf/liege_wr140.pdf
and of course Tom Kaye's and Christian Buil's remarkable exoplanet detections
http://www.spectrashift.com/
http://www.astrosurf.com/~buil/extrasolar/obs.htm
Robin
www.threehillsobservatory.co.uk