100mm Ha Etalon Filter with B1800 for 2" Focuser - LS100FHa2/B1800 8X Binoculars Cleaning is much easier

Cleaning is much easier

doubling the equivalent exposure at f/10

but the air pressure in the filter system is in fact adapted by 100 percent to the real external air pressure

Threaded for standard 1

100mm Ha Etalon Filter with B1800 for 2" Focuser - LS100FHa2/B1800 8X Binoculars Cleaning is much easierAbout the Lunt 100mm Ha Etalon Filter w B1800 for 2" Focuser This product number is for the Lunt H alpha Single Pass Front Mount Etalon System for telescopes with 2" focuser and up to 1620mm focal length. Introducing the Lunt LS100 Hydrogen alpha System a 100mm aperture integrally tuned etalon for use on any customer supplied refractor. System includes the B1800 blocking filter which provides full disk images on telescopes up to 1620mm focal length.