ANTLIA Ha 2.5nm ULTRA NARROWBAND FILTER 2" QHY15 2 x bolts for dovetail-tube

2 x bolts for dovetail-tube rings connection

which allows you to mount it to the bottom of any standard Vixen or Losmandy-style dovetail bar

SKU M42 adapter

& Z126 telescopes which have an M92 x 1 thread

adjustable horizon height limit

ANTLIA Ha 2.5nm ULTRA NARROWBAND FILTER 2" QHY15 2 x bolts for dovetail-tubeThe Antlia H Alpha 2. 5nm Ultra narrowband 2" filter has a FWHM (full width half maximum) of an incredible 2. 5nm +0. 3 0. 1nm and a high transmission efficiency of > 95% at the central wavelength. These filters are made from quartz glass which has an ultra low thermal expansion coefficient and outstanding thermal and mechanical properties. Utilizing Antlia's precisely controlled advanced coating process, these filters are exceptionally durable and