Founder Optics 1.25" Dielectric Diagonal Mirror - DIA1.25-M (Pre-owned) Counterweight Shafts & Bars Altair 4nm Ha Oiii DualBand

Altair 4nm Ha Oiii DualBand ULTRA Filter Technical Specifications:

it will be way easier to find focus between your guide camera and imaging camera at the same time

This uniform pressure creates a stable base for an imaging setup and prevents flex

celestial events and more so you can take full advantage of good opportunities for stargazing

Limiting Stellar Magnitude: 11

Founder Optics 1.25" Dielectric Diagonal Mirror - DIA1.25-M (Pre-owned) Counterweight Shafts & Bars Altair 4nm Ha Oiii DualBandUsed diagonal, in excellent condition! If you're looking for a nice 1. 25" diagonal for your refractor, this model from Founder Optics will do the trick. The compression ring twists to lock in 1. 25" barreled accessories without marring and fiddling with small screws in the dark. The telescope side slides into 1. 25" focusers. This Founder Optics 90 degree mirror diagonal has a dielectric coating with over 99. 99% reflectivity for bright images.