Celestron Mirror Diagonal
Best reliable upgrade for amateur astronomers seeking clearer nighttime views.
This high-performance diagonal unlocks the potential of larger eyepieces, providing a wider, brighter field of view. With precision-tested optics and a robust build, it is an essential upgrade for serious observers looking to maximize light transmission and clarity.
$184.00
at
eBay
Who it's for
- Stargazers seeking relief from neck strain during long observation sessions
- Beginner astronomers looking for a reliable, multi-purpose optical accessory
- Practical observers who value long-lasting equipment for frequent outdoor use
Who should skip it
- Terrestrial observers who require a correctly oriented upright view
- Deep-sky enthusiasts searching for the absolute maximum light throughput
- Experienced collectors who prefer heavy-duty, all-metal construction
Performance breakdown
Optical Clarity
StarBright XLT coatings deliver exceptionally bright, high-contrast views of deep-sky objects.
Surface Precision
Interferometer-tested 10th wave flatness ensures minimal distortion for critical planetary observation.
Build Integrity
Machined housing provides a rigid, secure fit that maintains critical optical alignment.
Field of View
The 2-inch barrel design unlocks wider, more immersive vistas for large eyepieces.
Portability
Included aluminum case offers robust protection for transport and safe storage.
System Compatibility
Optimized specifically for Schmidt-Cassegrain systems, limiting versatility for other telescope types.
Key Specs
Barrel Diameter
2 inches
Angle
90 degrees
Coating
StarBright XLT
Compatibility
Schmidt-Cassegrain telescopes
Reflectivity
>96%
Mirror Precision
10th wave flat
Included Items
Aluminum carrying case
Know before you buy
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