Quote:
Originally Posted by Merlin66
Jeff,
I ran your flouro spectrum though VSpec and got FWHM of 7 pixel, a dispersion of 2.8655 A/ pixel giving a resolution of 20A, equivalent to R=220... a good start!!
I think the slit width needs to be reduced: looking at a VERY bright light a 20micron slit looks like very very thin line of light between the blades...
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Thanks Ken.
Could the slit width problem also be that the slit is out of focus(in the colimating lens), slightly?
I have tried to focus the camera better but can't get the lines any narrower. Also I just relied on a projected solar image to find the F.L. of the colimating lens, here I may be out by several mm's.
Next move is to remove the slit and lens and try exact measures on a table.
Also I have to work on a flip mirror system for aligning the slit on starlight.
