spectro-aras.com

Pete, I don't exactly know what the total angle is for the LISA, or the spacing from the grating to imaging lens. Based on the LISA Prototype info: 33.7 deg and 35.6mm. Collimator 130mm Imaging 88mm 300 l/mm grating (assumed to be 30x30mm) The choice of camera and slit gap (15/19/23/35, 4mm height) ...

Ulisse,
You have designed and built an very nice instrument!
I'm sure the results will reward your efforts.

Ulisse,
A very impressive construction! Looks like CNC machined blocks
Look forward to seeing your results.
Do you intend to fir a reference lamp?

Well done!

Sabastien,
Which collimator, slit gap, grating, imaging lens and camera (pixel size) did you use?
The SimSpec results are usually pretty accurate

Robin,
Well done!
Congratulations.

https://en.jeulin.fr/double-radial-slits-212075.html
Ken

Robin, et al,
My contact was fanny.georget@jeulin.fr she was very helpful......

Ken

Sebastien,
The multiple reflective slit plates used in the Spectra-L200 ( and the current 3D printed LowSpec) are available from Jeulin at a reasonable price.

Sebastien,
The original design was without an entrance slit. I'm sure it will work well.
The resolution will be limited by the size of the star image at the telescope focus. SimSpec for a 3 arcsec seeing on your scope gives a FWHM size of 11 micron and an estimated R= 3100