DYI spectrometer

Here is my attempt to make a cheap DIY spectrometer. Using a usb camera and a jewelry spectroscope. The white line on the right should not be there. I think there is a slit between the grating plate and the housing of the spectroscope. It is a cheap scope.
I bought it here.
usb_spectroscope_small CG bulb spectra CFL_bulb LCD screen spectra monitor Outside light spectra outside_light