ZWO Narrowband 7nm OIII,SII & Ha Filter Set - 1.25" - NB7NM1.25 90mm refractor HD optical system Magnification: 10x

HD optical system Magnification: 10x Power Aperture size: 50 mm diameter Field of View (FOV): 6

135 mm (from M54x0

you will always have an optical alignment which is as perfect as it was on the first day you got it

75" diameter rolled steel tripod with a metal accessory tray

37 arcseconds Resolution (Dawes): 1

ZWO Narrowband 7nm OIII,SII & Ha Filter Set - 1.25" - NB7NM1.25 90mm refractor HD optical system Magnification: 10xThis Narrowband Filter Set from ZWO, also known as a SHO Set, is used for tri color astrophotography to give you beautiful "Hubble" type results. The three piece filter set includes a 7 nm OIII, SII & Ha 1. 25" threaded filter. The glass thickness is 2. 0+ 0. 03 mm, and the overall thickness of the filter is 5. 5 mm plus 2. 5 mm for the M28. 5 x 0. 6 male threads. The ZWO 7 nm bandpass is designed for imaging nebulae. H Alpha (Ha) Filter The ZWO H