"My experiences with the 7nm Baader filter have been fantastic. The filter is of very high quality, as are all the Baader filters and accessories. The ST-8 came with the 3nm CS filter which I used for a few months with good results. I started using the 7nm Baader after a friend of mine recommended I give it a try. He has been using one with his ST-10. The coatings appear to be quite good. I've experienced minimal reflections on brighter stars. The price is also very reasonable."
Fotografische Anwendung von Baader - Schmalband Filtern:
Bildautor: Johannes Schedler, © 2008 by Panther Observatory.
NGC7000+Pelican Mosaic with Baader NarrowbandCCD-filters. Note tight stars and absence of halos.