Long Perng 1.25" Half Pentaprism 45-deg Diagonal
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Long Perng 1.25" 45-deg pentaprism diagonal for use with Long Perng 1.25" Erect Image Divergent Binoviewer # K1.25N-E.
Features:
- Ideal for use with Long Perng 1.25" Erect Image Divergent Binoviewer* to provide a "correct" image (upright and correct from left to right, i.e., a correct, non-inverted, non-reversed image); especially useful for terrestrial viewing.
- Uses a high quality, dielectric multicoated, BK-7 glass pentaprism to change the viewing angle by 45-deg.
- 1.25" eyepiece holder features a non-marring brass-compression ring.
- 1.25" nosepiece is threaded to accept standard 1.25" astronomy filters and features a safety groove.
Additional Information:
- When used by itself with a refractor or catadioptric telescope and eyepiece, this diagonal provides an image that is inverted (upside down) from top to bottom but correct (not reveresed) from left to right.
- Not for use with Newtonian/Dobsonian reflectors.
- If used with other binoviewers, it will present an image that is oriented differently (i.e., not a correct image) than when used with the Long Perng divergent binoviewer. That is becuase the Long Perng binoviewer incorporates an image-erecting lens assembly that other binoviewers do not have.
- 1.25" eyepiece holder and nosepiece cannot be unscrewed from the diagonal body.
Specifications
- Barrel Size: 1.25"
- Viewing Angle: 45°
- Optical path length: 82mm
- Clear aperture: 25mm
- Eyepiece insertion depth: 34mm
- Materials: BK7
- Coating: Multi-Coated
- Housing material & finish: Aluminum & Anodizing
- Weight: 7.4oz (210g)
- Includes 1 end cap and 1 dust plug
| Product Banner Type | new |
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| Hide Found a better Shipped Price on Frontend? | No |
Long Perng 1.25" 45-deg pentaprism diagonal for use with Long Perng 1.25" Erect Image Divergent Binoviewer # K1.25N-E.
Features:
- Ideal for use with Long Perng 1.25" Erect Image Divergent Binoviewer* to provide a "correct" image (upright and correct from left to right, i.e., a correct, non-inverted, non-reversed image); especially useful for terrestrial viewing.
- Uses a high quality, dielectric multicoated, BK-7 glass pentaprism to change the viewing angle by 45-deg.
- 1.25" eyepiece holder features a non-marring brass-compression ring.
- 1.25" nosepiece is threaded to accept standard 1.25" astronomy filters and features a safety groove.
Additional Information:
- When used by itself with a refractor or catadioptric telescope and eyepiece, this diagonal provides an image that is inverted (upside down) from top to bottom but correct (not reveresed) from left to right.
- Not for use with Newtonian/Dobsonian reflectors.
- If used with other binoviewers, it will present an image that is oriented differently (i.e., not a correct image) than when used with the Long Perng divergent binoviewer. That is becuase the Long Perng binoviewer incorporates an image-erecting lens assembly that other binoviewers do not have.
- 1.25" eyepiece holder and nosepiece cannot be unscrewed from the diagonal body.
Specifications
- Barrel Size: 1.25"
- Viewing Angle: 45°
- Optical path length: 82mm
- Clear aperture: 25mm
- Eyepiece insertion depth: 34mm
- Materials: BK7
- Coating: Multi-Coated
- Housing material & finish: Aluminum & Anodizing
- Weight: 7.4oz (210g)
- Includes 1 end cap and 1 dust plug
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |