robin_astro

I think to be fair it should be pointed out that the ALPY 600 spectrograph is actually ~1400ukp for the equivalent core and guiding module which is similar to the price of the CCDSpec when it was launched, though it may now be discounted. Robin

Thanks for the "heads up" on this. I pointed my low resolution spectrograph at it last night. The spectrum confirms the z=2.4 redshift https://stargazerslounge.com/topic/300597-11-billion-years-ago/ Robin

Yep, that should work in principle, attached to the telescope in place of the eyepiece, for bright stars. I began my jouney in to astronomical spectroscopy and the development of the Star Analyser http://www.patonhawksley.co.uk/staranalyser.html in much the same way back in 2002 http://www.threehillsobservatory.co.uk/astro/spectra_1.htm (first light) You will need to remove the webcam lens and space the grating around 25-30mm away from the camera sensor to give a decent length spectrum and to explore into the IR, remove the IR block filter Good Luck! Robin www.threehillsobservatory.co.uk