Baader Planetarium Erecting Prism Diagonal
Best premium diagonal for observers seeking upright and correctly oriented views.
This high-precision erecting prism provides correctly oriented images, making it an ideal choice for terrestrial observation. Unlike standard options, its advanced optical design minimizes aberrations, allowing for clear, high-magnification viewing without the typical image breakdown found in lesser diagonals.
$335.00
at
Telescopes.net
Who it's for
- Birdwatchers and daytime observers seeking natural views through their telescopes
- Visual astronomers using binoviewers who need extra focus travel
- Serious hobbyists looking for a reliable, long-lasting mechanical investment
Who should skip it
- Critical planetary observers who demand perfectly clean star points
- Budget-conscious beginners looking for the most affordable entry-level accessories
- Wide-field enthusiasts using low-magnification eyepieces with large field stops
Performance breakdown
Image Orientation
Perfectly upright and laterally correct views for seamless terrestrial observation.
Optical Clarity
Seven-layer multicoatings deliver exceptional brightness and contrast across the field.
Build Integrity
Precision-machined aluminum housing ensures long-term durability and stress-free mounting.
Versatility
Included adapter allows easy switching between two-inch and 1.25-inch eyepieces.
High-Magnification Performance
Maintains sharp, distortion-free images where standard diagonals often struggle.
Artifact Suppression
Expertly crafted roof edge eliminates common diffraction spikes and astigmatism.
Key Specs
Diagonal Type
90-degree Amici erecting prism
Barrel Size
2 inches
Included Adapter
2-inch to 1.25-inch reducer
Optical Coating
7-layer multicoatings
Material
Aluminum housing
Warranty
2 years
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