Spectrometer I
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3rd part from the left had a mistake from the CAM software
This is a very rough test of the grating placing the grating, slit and camera in rough locations. A neon lamp was used as the test source. Slit was open fairly wide, since the room was not dark.
Aberration-corrected concave holographic grating
Small chip on the top surface which will be irrelevant to the final image across the center of the grating. 200mm focal length f/4.2 45 x 45 mm 1200l/mm dispersion 4nm/mm Bandpass : 0.5 mm slit = 2nm 1.0mm slit = 4nm 2.0mm slit = 8nm
Will need to be calibrated (laser/diffraction technique)
The LHS will hold a bayonet mount for my Canon cameras
The ball slots were not machined in the proper location, likely due to a mistake setting the 0,0 point on the second operation, on the back side.
The Red arrows indicate the issue
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