DAV5 V2.1 Spectrometer

Well this revised version is certainly doing better than I thought it would, especially since its using a 4.7GB DVD piece as a diffraction grating :)

The Rspec capture program is invaluable, and I will be purchasing it before the trial date expires, I'm sold!

It has features that are easier and better thought out (not to mention a far better user manual,) than Spectragryph 1.2.7 

Below is the raw data capture from Rspec:

This is the actual CFL spectral image from Rspec (cropped):

Above is the calibrated CFL spectrum ( 6500K/23W/120VAC) and below is the FWHM data:

Right now I have a resolution factor of 3.4nm, not too bad but I can get it down a lot more with some fine tuning, hopefully to at least 2nm, this is due in part to limitations of the ELP cmos camera and using a DVD piece as a diffraction grating, (ruled gratings have random imperfections within their spacings.)

I imaged my Solux lamp (4700K/50W) lamp with the DAV5 V2.1 spectrometer to test out the 32mm focusing collimation tube assembly and referenced the results to our own solar spectrum using the G5V solar spectrum calibration from RSpec, the capture software I use for this particular camera.

In the above graph, the purple spectrum is our sun, referenced against my solux lamp.

The above pic shows what the spectral image looks like from my Solux lamp spectrum.

I decided to get back to work on this project since I have a new contributing partner on board. The camera I am using for this is very low resolution I just wanted to utilize a different set up design using the new di-electric coated mirror ( 400-750nm) and Schott  glass filter attached to the focal lens.

Also it's not easy finding a webcam that works well with Spectragryph but this one works fine, so I'll use it for now until I find one that is at least a 5 mega pixel in resolution. The old JDEPC-05 board level camera, doesn't seem to work anymore with the new spectrometer software upgrade.

Well anyway here are some Solux lamp spectral images I captured today, ( 4700K, 50W and 12vdc 1.2A regulated power supply)

Here is the final design assembly for the camera mount for my next project the DAV5 V3 Raman spectrometer, I have been doing these designs on FreeCAD v0.16;

This is the Square mirror mount I designed for the DAV5 V3 spctrometer, I think the ray trace came out pretty good.