Expert choice for erecting prism diagonal

When you want to find erecting prism diagonal, you may need to consider between many choices. Finding the best erecting prism diagonal is not an easy task. In this post, we create a very short list about top 10 the best erecting prism diagonal for you. You can check detail product features, product specifications and also our voting for each product. Let’s start with following top 10 erecting prism diagonal:

Best erecting prism diagonal

Product Features Editor's score Go to site
Cassini 1.25 Inch Erecting Prism Diagonal Cassini 1.25 Inch Erecting Prism Diagonal
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Astromania 2 Astromania 2" 45-Degree Erecting Prism Diagonal for Telescope
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SVBONY 1.25 SVBONY 1.25" 45 Degree Erecting Image Diagonal Prism Zenith Mirror for Refractor Catadioptric Telescope and Astronomical Telescope Eyepiece
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Orion 7216 1.25-Inch 45-degree Correct Image Prism Telescope Diagonal Orion 7216 1.25-Inch 45-degree Correct Image Prism Telescope Diagonal
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Meade Instruments 07217 No.928 45-Degree Erecting Image Diagonal Prism Telescope Eyepiece, 1.25-Inch (Black) Meade Instruments 07217 No.928 45-Degree Erecting Image Diagonal Prism Telescope Eyepiece, 1.25-Inch (Black)
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Meade Instruments 07210 No.932 45-Degree Erecting Image Prism Telescope Eyepiece, 1.25-Inch (Black) Meade Instruments 07210 No.932 45-Degree Erecting Image Prism Telescope Eyepiece, 1.25-Inch (Black)
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William Optics 1.25 William Optics 1.25" 45-deg Erecting Prism Diagonal D-EP125
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Alstar 1.25 Alstar 1.25" 90-degree Erecting Prism optical Prism inside rather than a mirror which makes your image clear and sharp
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Orion 8754 1.25-Inch Deluxe 45-degree Correct-Image Prism Diagonal Orion 8754 1.25-Inch Deluxe 45-degree Correct-Image Prism Diagonal
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SM SunniMix 2 SM SunniMix 2" Telescope Eyepiece Barlow Lens 2X Fully Coated Optical Glass & Diagonal Prism Mirror 90 Degree Clear Image
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1. Cassini 1.25 Inch Erecting Prism Diagonal

Feature

Format: 1.25 Inch
Turns the image in your telescope right side up
Design: Prism
Prism type: 20mm, 45 degree Schmidt

Description

The Cassini Erecting Prism Diagonal increases the viewing comfort and usability of Refractor Telescopes. True astronomical telescopes will produce an upside down image. No erecting lenses, mirrors, or prisms are added. Having these elements in the telescope can cause images to be dim and or distorted making terrestrial viewing (land viewing) difficult. The Cassini Erecting Prism Diagonal will turn the image in your telescope right side up to enable easy, comfortable terrestrial viewing. Cassini Prism diagonals consist of a 45 degree prism and are available in 1.25 inch format.

2. Astromania 2" 45-Degree Erecting Prism Diagonal for Telescope

Feature

Image erecting BAK4 prism with anti-reflection coating.
High accuracy and high light reflection prism.
Internally matte blackened and threaded for no internal stray light reflection.
1.25" adapter with brass compression ring included.
Entirely aluminum, black anodized, smooth finish. If there is any problem of focusing due to the light path for a few telescopes, please feel free to contact us for help.

Description

Precision Prism - Image erecting BAK4 prism with anti-reflection coating. - High accuracy and high light reflection prism. - Brass compression ring. Superior Craftsmanship - Internally matte blackened and threaded for no internal stray light reflection. - Threaded for 2" filters. Ready to Go - 1.25" adapter with brass compression ring included. - Large, chromed thumbscrews. Beautiful Finish - Entirely aluminum, black anodized. - Smooth finish. Features: - Prism: High quality BAK4 with anti-reflection coating - Materials: Entirely machined aluminum - Angle: 45 degree - Prism clear aperture: 31mm - 2"-1.25" adapter with brass compression rings. If there is any problem of focusing due to the light path for a few telescopes, please feel free to contact us for help.

3. SVBONY 1.25" 45 Degree Erecting Image Diagonal Prism Zenith Mirror for Refractor Catadioptric Telescope and Astronomical Telescope Eyepiece

Feature

High-quality prism diagonal provides a comfortable and sharp 45 degree viewing orientation for great daytime terrestrial views and night time astronomy applications for telescopes or spotting scopes
High optical lens transparency;the large quality prism allows more light transmission;so that delievers a clear image
Standard 1.25 " diameter for filter thread for any 1.25" filter;fits for the standard 1.25" telescope eyepiece
Semi-metallic zenith mirror has dust cover keeping the lens clean,so that provides clear and sharp images and extends the service life
Lifetime warranty;we confidently promise lifetime warranty for each one from us

Description

SVBONY 45 degree erecting image diagonal prism for telescope and any standard 1.25" eyepiece

It's easily correct upside down and left right reversed image;makes it easier to navigate the day and night skies with telescope in correct position

You can insert it into the 1.25 " telescope silver terminal;the other end with a screw fixed 1.25" eyepiece;it can also be used to observe astronomy;nebula;cluster;nebula scattered with high brightness and excellent optical properties

Main Features:
Semi-metallic material;45 degrees prism
High optical lens transparency provides clear and sharp images
Standard 1.25 "diameter fits for 1.25" eyepiece and telescope
The dust cover keeps the lens clean to extend the service life
Type: zenith mirror
Observation angle: 45 degrees
Colorblack and silver
Net weight: 75.50g
Gross weight96.90g
Material:metal and plastic

Package includes:
1 x 1.25" 45 degree zenith mirror

Lifetime warranty;we confidently promise lifetime warranty for each one from us

4. Orion 7216 1.25-Inch 45-degree Correct Image Prism Telescope Diagonal

Feature

For terrestrial or astronomical use, this diagonal produces a right-side-up, non-reversed image with correct daytime orientation
Fully coated prisms for superior image fidelity and maximum light throughput
Accepts 1.25" eyepieces, fits in 1.25" focusers
Not recommended for use in Newtonian reflector or Dobsonian reflector telescopes
Requires 5/8" more focus travel than typical star diagonals

Description

For terrestrial viewing with a refractor or Cassegrain telescope, use of a correct-image (or image erecting) prism diagonal may be desirable. The image through the eyepiece image will appear upright and non-reversed, matching the naked-eye orientation. So a correct-image diagonal is essential for terrestrial viewing with the above telescope types and is useful for astronomical viewing for those that prefer to have the view through the telescope match the naked-eye orientation. Note that the 45-deg correct-image diagonal requires 5/8" more focus travel than typical diagonals. Diagonals are not recommended for use in reflector telescopes.

5. Meade Instruments 07217 No.928 45-Degree Erecting Image Diagonal Prism Telescope Eyepiece, 1.25-Inch (Black)

Feature

Ideal for all Meade ETX models except ETX-60, 70 and 80AT
Creates images that are upright and laterally correct
Comes with a built-in magnification factor of 1.08-times
Weighs 0.20-pounds
Comes with a 1-year limited warranty

Description

The Meade 07217 No.928 45-Degree Erecting Image Diagonal Prism Telescope Eyepiece is ideal for all Meade ETX models except ETX-60, 70 and 80AT. This prism creates images ideal for terrestrial observing that are upright and laterally correct and comes with a built-in magnification factor of 1.08-times. This erecting prism with a 45-degree observing angle attaches easily and provides images that are great for daytime work as well. This item weighs .20-pounds. The Meade 07217 No.928 45-Degree Erecting Image Diagonal Prism Telescope Eyepiece comes with a 1-year limited warranty. Meade has everything you need to capture the night sky for experienced star-shooters, serious researchers and beginners alike. Serious astronomers for years have flocked to Meade telescopes for their quality optical systems and patented technology. Consumers know that "Meade Optics Inside" means that what they see through our telescopes will be views that are detailed, crisp and full of contrast. Look through a Meade this evening and see what you've been missing.

6. Meade Instruments 07210 No.932 45-Degree Erecting Image Prism Telescope Eyepiece, 1.25-Inch (Black)

Feature

Ideal for all Meade ETX models except etx-60, 70 and 80at
Creates images that are upright and laterally correct
Comes with a built-in magnification Factor of 1.08-Times
Weighs 0.Pounds
Comes with a 1-year limited
Use for high-quality, crystal-clear terrestrial viewing
45-degree angle creates normal, not reversed object image
Provides better viewing position than normal 90-degree position
Attaches to rear of telescope with set-screw
Compatible with Meade ETX 90, 105, and 125

Description

The Meade 07210 No.932 45-Degree Erecting Image Prism Telescope Eyepiece is ideal for all Meade ETX models except ETX-60, 70 and 80AT. This prism creates images ideal for terrestrial observing that are upright and laterally correct and comes with a built-in magnification factor of 1.08-times. This erecting prism with a 45-degree observing angle attaches easily and provides images that are great for daytime work as well. This item weighs .20-pounds. The Meade 07210 No.932 45-Degree Erecting Image Prism Telescope Eyepiece comes with a 1-year limited warranty. Meade has everything you need to capture the night sky for experienced star-shooters, serious researchers and beginners alike. Serious astronomers for years have flocked to Meade telescopes for their quality optical systems and patented technology. Consumers know that "Meade Optics Inside" means that what they see through our telescopes will be views that are detailed, crisp and full of contrast. Look through a Meade this evening and see what you've been missing.

7. William Optics 1.25" 45-deg Erecting Prism Diagonal D-EP125

Feature

William Optics 1.25" 45-deg Erecting Prism Diagonal D-EP125

Description

William Optics new 45 EP will work with any 1.25" eyepieces and most scopes with 1.25" eyepiece holders (Please note that diagonals cannot be used with Newtonian or Dobsonian reflector telescopes). It will turn upside down images right side-up and give correct left-to-right image. This high-quality, low-cost erecting prism will set the standard in erecting prisms! Large Prism Large, high-quality BAK4 erecting prism with anti-reflection coating allows for good contrasted and bright images. Brass compression ring. Great Price 1.25" eyepiece holder comes with anti-marring brass compression ring. Extremely competitive price/quality ratio. Innovative Shape Entirely aluminum, black anodized eyepiece holder. Large, chromed thumbscrews. Advanced Craftsmanship Internally matte blackened and threaded for no internal stray light reflection. Features: Prism: High quality BAK4 with anti-reflection coating Materials: Entirely machined aluminum Angle: 45 degree Prism clear aperture: 25mm; 1.25" with brass compression rings Weight: 6 oz

8. Alstar 1.25" 90-degree Erecting Prism optical Prism inside rather than a mirror which makes your image clear and sharp

Feature

With this diagonal you can match the orientation of the star field with "correct" star maps and charts. It produces an image that is oriented properly, which means that the image is upright but reversed left to right.
This is a great diagonal for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes.
More comfortable viewing orientation as you observe from above, filter thread for any 1.25" filter. Accepts standard 1.25" eyepieces.
High quality optical Prism inside rather than a mirror which makes your image clear and sharp.
Economical 1.25" 90-deg prism diagonal for astronomical telescopes and spotting scopes.

Description

1.25" 90-degree diagonal features an image erecting prism that allows you to look into a telescope at a 90 degree angle. It produces an image that is oriented properly, which means that the image is upright and correct from left to right (i.e., a correct, non-inverted, non-reversed image).This is a great diagonal for daytime terrestrial use with small telescopes or spotting scopes. It can also be used for astronomy applications, especially when you would like to match the orientation of the star field with "correct" star maps and charts. The prism housing is made of precision molded ABS plastic and the two end barrels are precision machined from aluminum. The 1.25" nosepiece is threaded to accept standard 1.25" astronomy filters. Please Note: This diagonal can only be used with refractor telescopes and some catadioptric telescopes like Schmidt-Cassegrain, Maksutov-Cassegrain, etc. It not meant for use with Newtonian / Dobsonian reflector telescopes or other variants of Newtonian telescopes.

9. Orion 8754 1.25-Inch Deluxe 45-degree Correct-Image Prism Diagonal

Feature

Turn any refractor or Cassegrain telescope into a high-performance daytime spotting scope with our Deluxe 45 Degree Correct-Image Diagonal
High-quality prism diagonal provides a comfortable, 45 Degree viewing orientation for great daytime terrestrial views
Sporting a 27mm clear aperture, multi-coated prism, Deluxe 45 Degree Correct-Image Diagonal provides sharp views
3 arc second tolerance prism is 35% larger than prisms used in other models

Description

Turn any refractor or Maksutov-Cassegrain telescope into a high-performance terrestrial spotting scope! Our new Deluxe 45-deg Correct-Image Prism Diagonal features a highly accurate, multi-coated image-erecting prism with a tight 3-arcsecond tolerance and a 27mm clear diameter. Views through the diagonal appear right-side-up and correct left-to-right, making it ideal for for daytime use with a high-power Maksutov-Cassegrain or versatile refractor telescope. Not recommended for use with Newtonian reflector telescopes.

10. SM SunniMix 2" Telescope Eyepiece Barlow Lens 2X Fully Coated Optical Glass & Diagonal Prism Mirror 90 Degree Clear Image

Feature

* 1.25" and 2" Connectors2" eyepiece attachment and 1.25" telescope.
* Fully Multi-coated Purple Film: high transmittance to improve image brightness.
* 2X Magnification: to observe more detail at the deep sky, star, moon and other planets.
* 2" Barlow Lens 2X Eyepiece & Astronomy Telescope Erecting Prism Diagonal 90 Degree.
* High Reflectivitybuilt-in high-definition reflective prism, reflectivity up to 95%.

Description

Description:

- 2" Barlow Lens 2X Eyepiece & Astronomy Telescope Erecting Prism Diagonal 90 Degree.
- 2X Magnification: to observe more detail at the deep sky, star, moon and other planets.
- Fully Multi-coated Purple Film: high transmittance to improve image brightness.
- High Reflectivitybuilt-in high-definition reflective prism, reflectivity up to 95%.
- 1.25" and 2" Connectors2" eyepiece attachment and 1.25" telescope.

Specification:

- Material: Metal + Optical Glass
- Mirror Size: 14x6 cm/5.51x2.36 inch
- Eyepiece Size: 12x7.3 cm/5x3 inch
- Magnification: 2X
- Coating: Multilayer HD Broadband Purple Film

Package Includes:

1x Telescope Diagonal Prism
1x Barlow Lens
1x Eyeshade
2x Cover


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Conclusion

By our suggestions above, we hope that you can found the best erecting prism diagonal for you. Please don't forget to share your experience by comment in this post. Thank you!

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