I am redesigning the DH4 V4a because I am having major problems with the ELP cmos camera module for the DAV5 V2, I will be incorperating many aspects into the DH4 V4a that are from the DAV5 spectrometer, mainly because the JDEPC-ov05 camera has proved to be far more reliable than I expected.

It also works just fine with the new upgrade of spekwin32 processing software (which is now SpectraGryph 1.0.) This design lets the camera module nestle snugly in the inlay of the holder and allows a 3mm distance between the DVD diffraction grating and camera eye lens.

This design will be far more sophisticated than anything I have built so far, because this will be a truer spectrometer in the sense that it will have a reflective mirror and concave focusing mirror that will direct the diffracted spectrum to the detector for a sharper and higher resolution spectrum.

The new cost contraints will be under 150.00 US dollars, still well under anything out there with this kind of performance. The materials will be sourced from mostly local hardware stores when possible.