Observe the sun with different filters on different telescopes, compare and test

Product Description
We offer the opportunity to observe, compare, and test the sun with various filters on different telescopes.

In white light or H-Alpha. With a refractor or Maksutov. With the Baader Astrosolar filter foil, a glass solar filter, or a Lunt or Coronado PST.

http://www.teleskop-spezialisten.de/shop/Filter-Adapter-Buecher-sonstiges-Zubehoer/Sonnenbeobachtung:::22_117.html