SVBONY SV188P 1.25" 90° Dielectric Mirror Diagonal

See brighter, clearer detail through your telescope with a diagonal built for comfortable viewing.

The SVBONY SV188P Dielectric Mirror Diagonal uses a 90° viewing angle so you can observe without the awkward neck strain that comes from looking straight through the scope.

Clear views with more comfort at the eyepiece

✅ Enjoy brighter views with 99% reflectivity that keeps more light in your image

✅ Reduce neck strain during long observing sessions with a 90° viewing angle

✅ Fit standard 1.25" telescope setups for a simple upgrade to your observing routine

✅ Attach 1.25" filters directly with the 28.5x0.6 threaded connection

✅ Keep accessories secure with the brass compression ring and locking screw

✅ Protect your gear from wear with a machined and anodized aluminum alloy body

✅ Balance your setup more easily with the 125 g build and 54mm optical path length

This diagonal is made for real observing sessions, not just spec sheets. The dielectric coating is made to preserve brightness and detail, so the Moon, planets, and deep-sky targets stay easier to study at the eyepiece.

Its 1.25" size fits a wide range of telescope focusers and common eyepieces, barlow lenses, and filters. That makes it a practical upgrade when you want a cleaner setup without extra hassle.

The secure fit matters when you swap accessories often. The brass compression ring keeps barrels protected, while the threaded filter connection gives you a straightforward way to build the viewing setup you want.

Whether you are observing from the yard or spending a full night at the telescope, this diagonal adds comfort, control, and steady performance to your routine.

Bring sharper, more comfortable viewing to every session with the SV188P Dielectric Mirror Diagonal.

Keep your telescope setup focused on clearer views.

Observe more comfortably during long sessions.

Preserve brightness and detail where it matters.

Keep your filters and eyepieces working together easily.

Make overhead viewing feel less tiring.

Add filters without complicating your setup.

Hold accessories securely while protecting their barrels.

Stay balanced with a lighter piece in your setup.

Rely on a body made for regular observing use.