Coronado Double Stacking Narrowband Element Front Unit 40mm & Tmax for use with a P.S.T. 40 Telescope Please Note: Can not be used witout a seconardy interf

Coronado Double Stacking Narrowband Element Front Unit 40mm & Tmax for use with a P.S.T. 40 Telescope Please Note: Can not be used witout a seconardy interf

I remember a couple of days ago. I see Coronado Double Stacking Narrowband Element Front Unit 40mm & Tmax for sale at many of the online store.

This is the only method of double stacking your PST for a more narrow bandpass -0.6 Angstrom - this will dramatically increased the amount of surface detail you can see with your P.S.T. Read more

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