Thanks for this video. I made one following your video. But I am not able to see ANY spectrum on the top side. The lower spectrum is indeed visible. I have made a grating from burnt CD disk. The angle is like 40 degrees.
Hi, glad you liked the video. You might try using a DVD instead of a CD. It has more fine lines. And use an unused ( unburned) DVD. Also, by varying the focus of the webcam, and rotating the diffraction grating, you should be able to fine tune it for the best results. The angle the camera makes relative to the aperture along with the slit size will vary the resolution . Hope that is of some help.
I was thinking using an old laptop CD/DVD drive sled to control the slit width. Finding the time to assemble with a MCU and program is another situation. 🙂I was also wondering about using a HD Actuator to sweep back and forth to find the best frequency to possibly use a finer line diffraction grating, so as to sweep a persistent stable image with higher resolution spectra. Seemed there was something limiting at one time and I forget offhand, of course besides the powers that be. @@toddanonymous5295
Neat to see new builds and details! Thanks for sharing!
Thanks for this video. I made one following your video. But I am not able to see ANY spectrum on the top side. The lower spectrum is indeed visible. I have made a grating from burnt CD disk. The angle is like 40 degrees.
Hi, glad you liked the video. You might try using a DVD instead of a CD. It has more fine lines. And use an unused ( unburned) DVD. Also, by varying the focus of the webcam, and rotating the diffraction grating, you should be able to fine tune it for the best results. The angle the camera makes relative to the aperture along with the slit size will vary the resolution . Hope that is of some help.
hi, grating glass is highly affordable. so its better to use that than using used CD
I was thinking using an old laptop CD/DVD drive sled to control the slit width. Finding the time to assemble with a MCU and program is another situation. 🙂I was also wondering about using a HD Actuator to sweep back and forth to find the best frequency to possibly use a finer line diffraction grating, so as to sweep a persistent stable image with higher resolution spectra. Seemed there was something limiting at one time and I forget offhand, of course besides the powers that be. @@toddanonymous5295