1.25" Dielectric Star Diagonal (D1030)

Name: 1.25" Dielectric Star Diagonal (D1030)
Brand: Stellarvue
SKU: D1030
Price: 59.4 USD
Availability: InStock
Rating: 4.8 (5 reviews)

1.25" Dielectric Star Diagonal (D1030) - Main image

$59.4 ~~$99~~ In stock

Category: Observing Aids

Description

Comes with a thick, precision, optical flat mirror with an enhanced 99% reflective dielectric coating. Compression ring holds eyepieces firmly and the insert tube has the safety groove and filter thread. All aluminum construction. Individually tested here for perfect alignment and freedom from astigmatism.

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Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Chloe ★★★★★ Oct 21, 2026

The compression ring on this star diagonal holds my heaviest eyepieces securely without any slipping, and the safety groove on the insert tube gives me peace of mind when swapping out lenses in the dark.

Riley W. ★★★★★ Oct 20, 2026

The dielectric coating on this diagonal is noticeably brighter than my old prism—that 99% reflectivity really makes a difference on faint nebulae. The compression ring holds my 2" eyepieces securely without any slipping. Very pleased with the build quality for the price.

Joseph N. ★★★★★ Oct 19, 2026

Swapping between eyepieces is effortless thanks to the compression ring, and the 99% reflective coating really delivers crisp, bright views of Jupiter's bands.