What is the bluest narrow band filter mounted on ground based telescopes? If we want to check a QSO's lyman alpha narrow band image, could a ground based telescope do that?

I mean under the circumstance that its lyman alpha shifts to 3300A.
You probably will have difficulty imaging Ly$\alpha$ from a z=1.7 quasar at 330nm. 

Says P. Veron: The lower limit [z=1.8] is set by the ultraviolet transmission of the atmosphere... between 3300 and 3600Å.