Buy the Coronado Double Stacking Narrowband Element Front Unit 40 mm & Tmax for use with a P.S.T. 40 Telescope Please Note: Can not be used witout a seconardy interference filter. on http://www.adorama.com
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Brand:Coronado
Located in:Binoculars & Telescopes, Telescopes and Accessories, Solar Telescopes & H-Alpha Filters
Coronado Double Stacking Narrowband Element Front Unit 40 mm & Tmax for use with a P.S.T. 40 Telescope Please Note: Can not be used witout a seconardy interference filter.
It's worth the cost
By wvearthsky
from Lewisburg, WV on 2/5/2007
from Lewisburg, WV on 2/5/2007
Pros:
Clear Optics, Consistent Effect, More contrasty solar surf
Bottom Line:
Yes, I would recommend this to a friend
when my PST came back from Coronado after rusty objective replacement it was too bright and ghosty. Simplest soution was to add the double stack. Now it shows prom and surface detail w/out being too bright visually.