Antlia 3nm OIII Pro Series Filter - 2" - OIII-PRO-3NM-2 Baader Filters Counterweight and CW shaft

Counterweight and CW shaft

Optical Quality: 1/4 wave

4mm coupler: Compatible with the latest EAFN and EAF Pro models

Focal Length: 30mm

Optionally available 2" Baader Clicklock-clamp w

Antlia 3nm OIII Pro Series Filter - 2" - OIII-PRO-3NM-2 Baader Filters Counterweight and CW shaftThis very narrowband 3 nm OIII 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 Oxygen III Filter 2" Mounted The Antlia OIII Pro narrowband filter optimizes the FWHM (full width half maximum) to 3nm bandpass. As the bandwidth becomes narrower, the 3nm Pro