Antlia 4.5nm H-Alpha Edge Series Filter - 2" - HA-EDGE-4.5NM-2 60 mm Spotting Scopes 2A Internal Battery Pack No

2A Internal Battery Pack No Mount power port size and style 2

8 6 STOPS 1

Just rotate the handle to adjust the tilt angle for added convenience

Suitable for lighter-weight iOptron computerized telescope systems such as the SmartStart series AKA "The Cube

Best for lighter telescopes

Antlia 4.5nm H-Alpha Edge Series Filter - 2" - HA-EDGE-4.5NM-2 60 mm Spotting Scopes 2A Internal Battery Pack NoThis narrowband 4. 5nm H alpha filter from Antlia is part of their Edge series and comes in a 2" threaded filter cell that is designed to be screwed on to the 2" receptacle of your astrophotography accessory, including a 2" filter wheel or filter holder. Important! Not for use when viewing or imaging the Sun! Antlia 4. 5nm Edge Series H Alpha Filter 2" Mounted Antlia H alpha Edge narrowband filters optimize the FWHM (full width half maximum) to a 4.