Lunt - 50mm Ha Etalon-Filter-System with B600 blocking filter for 2 "

Introducing the LS50 Hydrogen-alpha system. To kick off the new company we are offering the 50mm aperture (no central obstruction) integrally tuned etalon for use on any customer supplied refractor. System includes the B600 blocking filter standard which provides full disk images on telescopes up to 540mm focal length. Larger blocking filters suitable for longer focal length telescopes are also available options. Because the LS50 has an estimated bandpass of <0.75 Angstroms it is capable to providing high contrast views of both surface and edge detail. Adding an additional etalon system will reduce the bandpass to ~<0.55 (dependant upon scope) allowing for higher resolution viewing and/or imaging. Delivered with order: • Main Filter • Blocking Filter (for 2 inch eyepiece-holder) • Transport case