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Baader T-2 BBHS mirror diagonal, metal body, male and female threads

Baader Planetarium

Baader Planetarium T-2 BBHS Mirror Diagonal #2456103

SKU CH-JQZZ-VZNHA

A T-2 mirror diagonal with a hardened silver dielectric overcoat on a Sitall glass-ceramic substrate for high reflectivity and thermal stability

  • Sitall-glass ceramic mirror delivers ultra-low thermal expansion for stable high-fidelity images
  • Hardened silver with dielectric over-coating maximises light throughput and brilliance
  • Solid metal body protects internal optics for long-lasting performance
  • Male and female T-2 threads enable secure versatile connection to many telescopes
  • Same housing as MaxBright 2456100 with upgraded BBHS mirror coating

Sitall Glass Ceramic Mirror Diagonal

The Baader Planetarium T-2 BBHS Mirror Diagonal uses a Sitall glass ceramic mirror with hardened silver and dielectric over-coating. The crystalline ceramic material has ultra-low thermal expansion to maintain figure accuracy during temperature changes. A solid metal body houses the optic and provides male and female T-2 threads for connection.

Astrophotographers needing maximum reflectivity

Observers who prioritise the highest possible light throughput for faint deep-sky targets will benefit from the hard-silver coating. Users who require the proven longevity of a traditional dielectric coating should consider the alternative MaxBright version instead.

Hardened silver coating with dielectric over-coat

This specific mirror coating delivers higher brilliance than standard dielectric layers according to manufacturer testing. The Sitall substrate ensures the coated surface remains stable across a wide temperature range, preserving the diagonal's optical performance.

How it compares

Measured against everything we stock in Binoculars, Scopes & Sights, at today’s prices. Recalculated every night.

Price $248.99
Pricier than about 70% of the 1,401 comparable items (median $93.99).

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the BBHS model 2456103 or the MaxBright model 2456100?

The BBHS 2456103 uses a hardened silver coating with dielectric overcoat on Sitall glass ceramic, tested for higher brilliance than standard dielectric coatings, while the MaxBright 2456100 uses a traditional dielectric coating on the same housing.

What does the hardened silver with dielectric overcoat deliver on my telescope?

It provides higher brilliance than cheap dielectric coatings, maximising light throughput and minimising internal reflections for sharper, higher-contrast views.

How does the T-2 male/female thread affect what I can attach?

The T-2 male/female thread allows direct connection to T-2 accessories and telescopes, giving a secure, adaptable fit for a wide range of setups.

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