TeleVue Zenith Mirror 90° 1.25″ – Diagonal Mirror

TeleVue Zenit mirror 90° 1.25″: Diagonal mirror: classic Zenit mirror in 1.25 inch

The TeleVue 90-degree star diagonal is the entry-level model in the diagonal lineup: an aluminum coating with 96 percent reflectivity, mounted in the same sturdy housing as the more expensive models.

For anyone replacing an included standard diagonal, the gain in contrast and star images is immediately visible; the difference with the Everbrite lies in the final percentages of reflection.

Preventing the weakest link

A telescope is only as good as its worst element in the light path. A mediocre star diagonal costs contrast and introduces astigmatism, which is immediately visible at high magnification.

Anyone who invests in eyepieces of this caliber wants the light to reach the eyepiece unaffected. That is what this diagonal is for.

The trade-off with the Everbrite

Ninety-six versus ninety-nine percent reflection seems like little, but on the faintest objects every percent counts. The Everbrite is the mirror for those seeking the maximum; this classic version is the sensible upgrade for any entry-level system.

The housing and the clamping ring are of the same quality, so you do not compromise mechanically.

Featured accessories

The diagonal combines with every eyepiece from the TeleVue lineup; the compression ring also securely holds heavy 2-inch eyepieces. A nebula filter can be screwed directly into the nose of the mirror.

For whom yes and for whom no

• ✓ The first upgrade of an included diagonal
• ✓ Refractors and catadioptric telescopes with 1.25 inch
• ✓ Looking for quality without an Everbrite budget
• ✗ Whoever wants maximum reflection, see the Everbrite
• ✗ Newtons

Specifications

You can find the complete product line for this brand at the TeleVue brand page.