Click on following links to view posts on amateur astronomical spectroscopy on the website of Rosliston Astronomy Group:
All relevant posts:
https://roslistonastronomy.uk/category/spectroscopy
Posts related to the use of the CCDSPEC Spectrometer made by Ken Elliott:
https://roslistonastronomy.uk/category/spectroscopy/ccdspec-spectrometer
Posts related to the use of the Science Surplus DIY Spectrometer:
https://roslistonastronomy.uk/category/spectroscopy/diy-spectrometer