Andrew,
Your camera would work with the grating.
Remember without a slit, the grating resolution is only as good as the size of the target, smaller the target, better the results i.e. stellar images.
Check out our webpage for details:
http://www.astronomicalspectroscopy.com/gratings.html
and
http://www.astronomicalspectroscopy.com/objects.html (down the page for Planets)