Celestron offers a standard 2" 90°Mirror Diagonal to thread on Schmidt- Cassegrain telescopes. This improved version of our 2" Diagonal includes an adapter to accept 1¼" eyepieces. It has a multicoated mirror and smooth mechanics that are preci... [more]

Enhanced Aluminum Coating provides 96% reflectivity with protective overcoat.

 

The model DPS-2004 Everbrite diagonal for 2" eyepieces matches the model ACS-0004 SCT adapter -- which is 0.7" shorter than previous models -- to maximize SCT fork arm, swing-through clearance on such telescopes as the LX90.   With the Cele... [more]

2" Enhanced dielectric coated diagonal mirror with 99% reflectivity. It will include a 1.25” adapter

2" Dielectric Mirror Star Diagonal       * Features sophisticated, lab-tested dielectric coatings that boast an astounding 99% reflectivity     * Its dielectric coatings are more durable than enhanced aluminu... [more]

Introducing Celestron's new 2" XLT Diagonal. This high quality multi-coated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces. Featuring our premier StarBright XLT coatings, this unit has an interferome... [more]

Antares' 2" SCT diagonal features dielectric coatings with 99% reflectivity across the visible spectrum and a 1/12 wave BK7 mirror. The all metal diagonal body is CNC machined. The combined result is a superb diagonal offering excellent mechanical a... [more]