Astronomik UHC Filter bought from Telescope Service Germany.
Its still in unopened original box.
Ultra High Contrast Filter for observing and photography of planetary and other emission nebulae.
Made in Germany!!
-Transmits Lines H-beta, [O III] and H-alpha
-Enhances contrast of planetary and oher emission nebulae
-Blocks undesired wavelength ranges
-Scratch- and moisture resistant anti reflex coating
-Excellent carrier material
-Can be screwed into 2" eyepieces or other accessories with equivalent thread
Price for each filter is 129 Euros with included shipping worldwide.
Contact me on denis0007dl(==>)gmail.com
Kind regards and all best
CS
Denis, binoviewers expert