Antlia 3nm SII Pro Series Filter - 2" - SII-PRO-3NM-2 (Pre-owned) Mounting Rings effectively making the sensation of

effectively making the sensation of looking through binoculars vanish

Increase your focus travel

the Starfield Tri-Pier 1000B is designed for repeatable performance whether you're in the backyard

actual filter performance may vary in the field based on several factors

Antlia 3nm SII Pro Series Filter - 2" - SII-PRO-3NM-2 (Pre-owned) Mounting Rings effectively making the sensation ofIn excellent condition. This very narrowband 3 nm SII filter from Antlia is part of their Pro 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 drawer. Antlia 3nm Pro Series Sulfur II Filter 2" Mounted This Antlia SII Pro narrowband filter optimizes the FWHM (full width half maximum) to a 3nm bandpass. As the bandwidth becomes