This is a naked PST etalon that I used as a contrast booster for imaging with my Quark Chromosphere.
The two diverging lenses have been removed, they can be replaced and the etalon can be used in a PST mod. There are no blocking filters or other parts.
Please note that I am selling these items as project parts only and will not accept any liability for missuse.
If you are not an experienced Solar astronomer I strongly advise that you seek advice from a person
with knowledge in solar imaging.
This etalon can produce some excellent results if the seeing permits.
I am selling it as I'm upgrading to a higher spec Solar filter .
