I installed a new slit (second generation) in my Sol'Ex Pro version. This slit has two positions, 7 and 10micron.The 7 micron position was used. The slit support was 3D printed by a Johan (Helios colleague) and all fit well. Some advantages using the new 7 micron slit results in increasing
- the resolving power R of the SOl'Ex from 36.000 to 46.000, an increase of 27% (using ZWO678MM camera)
- the spectral resolution from 0,18 to 0,14 angstrom for H-alpha; an increase of 22%
The "height" of the slit is now 6mm (before 4,5mm) which makes it possible to image the Sundisk using both my TLAPO80/480 f/6 with ZWO678MM camera.
All information of the second generation slit can be found in the following document from Christian Buil (https://buil.astrosurf.com/starex/slit_solex_gen2.pdf)
See specifications of the 7 micron slit: https://www.shelyak.com/produit/fente-solex-sunscan-2-positions/
