Antlia 4.5nm H-Alpha Edge Series Filter - 1.25" - HA-EDGE-4.5NM-125 Dovetail Brackets Peak Transmission: ＞85%

Peak Transmission: ＞85%

Black anodized finish Laser engraving

Aluminum Hard Carrying Case

etc…) Belt RA Gear Ratio 81 x 4 Dec gear ratio 81 x 4 Clutch type Strain-Wave Tracking Modes Sideral

Resolution: 1936 x 1216

Antlia 4.5nm H-Alpha Edge Series Filter - 1.25" - HA-EDGE-4.5NM-125 Dovetail Brackets Peak Transmission: ＞85%This narrowband 4. 5 nm H alpha filter from Antlia is part of their Edge series and comes in a 1. 25" threaded filter cell that is designed to be screwed on to the 1. 25" receptacle of your astrophotography accessory, including a 1. 25" filter wheel. Important! Not for use when viewing or imaging the Sun! Antlia 4. 5nm Edge Series H Alpha Filter 1. 25" Mounted Antlia H alpha Edge narrowband filters optimize the FWHM (full width half maximum) to a 4.