100mm Ha Etalon Filter with B1800 for 2" Focuser - LS100FHa2/B1800 8X Binoculars doubling the equivalent exposure at

doubling the equivalent exposure at f/10

Baader Q-Turret (#BQT)

Explore Scientific 2X Focal Extender - 1

Celestron Carrying Case for NexStar 4/5/6 & 8" OTAs Features

100mm Ha Etalon Filter with B1800 for 2" Focuser - LS100FHa2/B1800 8X Binoculars doubling the equivalent exposure atAbout 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.