And of course you can also use your DSLR with your Star Analyser to do some simple spectroscopy that you asked about
https://britastro.org/node/16809
There are some tips on how to do this on Christian Buil’s page here
http://www.astrosurf.com/buil/staranalyser/obs.htm
(Don’t worry about the wedge prism or focal reducer he uses there, just screw the Star Analyser on the front of the nosepiece adapter)
Robin