Looking for some of the best Best Star Diagonal? As you may know, there are dozens of brands available in the market such as SVBONY,Celestron and some come with vastly different price tags. Let us help you out here – we have handpicked the Best Star Diagonal for you.
To compile our list, we’ve researched and evaluated a range of the best-selling products on the market. We recommend SVBONY Best Star Diagonal as our top pick because of its exceptional overall performance. Want to explore more options? Read on! There’s also a buying guide to help you make a wise shopping decision.
Editor's Choice
SVBONY SV188P Dielectric Mirror Star Diagonal, 90 Degree Mirror Diagonal, 99% Reflectivity
Premium Pick
SVBONY SV188P Dielectric Mirror Star Diagonal, 90 Degree Mirror Diagonal, 99% Reflectivity
Top 10 Best Star Diagonal
We researched and compared the top products in the Best Star Diagonal category to provide you with these recommendations.
1. SVBONY SV188P Dielectric Mirror Star Diagonal, 90 Degree Mirror Diagonal, 99% Reflectivity
- Dielectric coatings; super flat mirror with dielectric coatings to reduce reflected light loss; provide an over 99% reflective surface; good for astronomical viewing
- 1.25 inches nosepiece fits 1.25 inches telescopes; accepts standard 1.25in filters; eyepieces; Barlow lenses and other accessories with a 1.25in insert barrel
- 90 degree viewing angle; diagonal reflects the telescopes light path 90 degree to provide a more comfortable viewing angle; best for observing objects overhead
- Correct upside down and left right reversed image; the view image is upright; but left and right reversed if use the 90 degrees to your telescope
- Brass compression ring; Built in brass ring and thumbscrew accessories avoid eyepiece to rotate during adjustments; effortless fixes more firmly and will not scratch your eyepieces barrels
2. SVBONY SV188P Dielectric Mirror Star Diagonal, 90 Degree Mirror Diagonal, 99% Reflectivity
- SV188P diagonal uses a high-reflective dielectric coating; more durable and more reflective than enhanced aluminum coating; reflectivity is up to 99%; for maximum field of view brightness and clarity
- 2-inch dielectric mirror diagonal; suitable for 2-inch telescopes and eyepieces; supports 2-inch filter installation; comes with a 2-inch to 1.25-inch converter; can be connected to 1.25-inch eyepieces; barlow and other telescope accessories
- 90 degree viewing angle; provides a more comfortable viewing angle to observe the starry sky above; provides an upright image; comfortable observation; reducing the steps of post-image processing
- Star diagonal adopts a side screw locking design; there is a brass pressure ring inside the barrel; so that the eyepiece surface will not be damaged when locking the eyepiece; it has an eyepiece anti-contact block design; better protect your eyepiece from damage
- The interior of the SV188P has been specially treated to eliminate stray light; spray matte paint; the side burgundy cover is made of aluminum plate; and matte velvet is attached; it can effectively eliminate stray light; get a bright image
- The diagonal is made of aluminum alloy; the lens uses a high-precision plane mirror with a 1/4 wavelength error; and the surface is coated with a dielectric film with a reflectivity of up to 99% to improve the performance of the reflector; the surface of the lens barrel is treated with black bright oxidation; beautiful and generous
3. CELESTRON Dielectric Star Diagonal 1.25" with Twist Lock
- Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings
- Provides a 90 viewing angle, perfect for more comfortable viewing through refractor and cassegrain-type telescopes
- 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece
- Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment
- Accepts standard eyepieces, Barlow lenses, threaded filters, and other accessories with a 1. 25 Barrel
4. SVBONY SV221 90 Degree Diagonal Mirror, Telescope Diagonal 1.25 inches with Brass Compression Rings,
- Enhanced Aluminum Die; the SV221 diagonal mirror is designed with enhanced aluminum mold; which has higher light transmittance and clearer vision.
- 1.25 inches diameter; the SV221 diagonal mirror has a diameter of 1.25 inches; which can be applied to a 1.25 inches telescope and a 1.25 inches eyepiece.The image effect of this zenith mirror is positive up and down, and negative left and right.
- With a brass pressure ring; the SV221 diagonal mirror has a brass pressure ring; which can prevent surface damage and scratch marks when the eyepiece is used with the SV221
- Supports 1.25-inch filters features internal extinction treatment and supports the connection of 1.25-inch filters; Offering versatility for various observations
- With filter thread; the SV221 diagonal mirror has M28.5x0.6mm filter thread; which supports the connection of 1.25 inches filter
- 90 degrees design; the SV221 diagonal mirror 90 degrees deflection angle design; you don't have to bend over when performing visual observation; and the observation experience is more comfortable
- Internal extinction design; the SV221 diagonal mirror has internal extinction treatment; and the acquired image is clearer and brighter
5. Celestron 94115-A 1.25 inch Star Diagonal, Black
- Fits Telescopes With 1.25 Focusers Or Visual Backs, 90 Viewing Angle, Best For Observing Objects Overhead
- Item Package Dimensions:4.5"L X2.25"W X3"H
- Country Of Origin: China
- Product Type: Binocular
6. Celestron 93573 Dielectric Star Diagonal 2" with Twist Lock
- Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings
- Provides a 90 viewing angle, perfect for more comfortable viewing through refractor and cass grain-type telescopes
- 58 layers of dielectric coatings provide an over 99% reflective surface, ensuring the maximum amount of light collected by the telescope reaches the eyepiece
- Twist-lock keeps the eyepiece centered in the diagonal to provide better optical alignment
- Includes a Stepdown adapter, so the diagonal accepts eyepieces, Barlow lenses, threaded filters, and other accessories in both 2 and 1. 25 sizes
7. SVBONY SV223 1.25 Inch 90 Degree Dielectric Mirror, 99% Reflective Dielectric Coating Star Diagonal,
- 1.25" diameter; SV223 diagonal adapter can be combined with 1.25" eyepieces and barlow lens; suitable for any 1.25" telescope accessories
- Stable installation; the SV223 dielectric mirror has a clicklock locking mechanism; which can realize ultra-fast clamping action and ensure the stable installation and use of the eyepiece; SV223 star diagonal not easy to fall off
- Image is clear and bright; the SV223 dielectric mirror is equipped with a thick precision optical flat mirror with an enhanced 99% reflective dielectric coating; which has a large amount of light transmission and a good imaging effect
- High-quality aluminum material; internal antireflection baffling for highest contrast; which is light and stable; ensuring that the star diagonal is durable and can reduce the weight of the equipment without affecting the balance of the equipment
- 90 degrees design; the star diagonal of SV223 adopts a 90 degrees design; which can provide you with a better observation experience during visual observation
8. Astromania 1.25 Inch Telescope Diagonal with Amici Erecting Prism - 90° Fully-Coated Star Diagonal
- 90 Telescope Diagonal for Comfortable Viewing: Experience effortless astronomical observation with Telescope Diagonal Mirror featuring 90 angle design; Maintain an upright & comfortable posture, whether observing planets or terrestrial landscapes
- Erect Image Diagonal with Amici Prism Technology: The integrated Amici Prism Diagonal BK7 optical glass corrects image orientation; delivering upright & non-reversed viewsperfect for birdwatching and deep-sky exploration
- Premium Fully-Coated Diagonal for Optimal Clarity: Multi-layer dielectric coatings on prisms and lenses ensure 89% reflection for a bright image; surpassing standard mirrors in brightness and sharpness for Star Diagonal applications
- Resitant 1.25 Inch Telescope Diagonal Build: Combining an premium-grade aluminum barrel and impact-resistant ABS housing, this diagonal withstands extreme temperatures from -20C to 60C while fitting all 1.25" focusers
- Enhanced Compatibility & Versatility: Utilize the M28.50.6mm filter thread to attach 1.25 inch moon filters or nebula filters, expanding your telescope diagonals functionality across celestial and terrestrial targets
- Control Engineering for Crisp Imagery: Internal glare-eliminating threads and dual rubber dust caps minimize glare and debris; ensuring to improve brightness of image and reduce dark edge formed
- Sophisticated Aesthetics & Ergonomics: The high-gloss finish resists fingerprints and scratches, while the compact lightweight design ensures portability for field astronomy
9. Alstar Diagonal Mirror 90 Degree, Telescope Diagonal 1.25 inches with Fixing Eyepiece Thumbscrew,
- 90-Degree Viewing Angle: Features 90 degree observing design more comfortable viewing orientation as you observe from above;reducing unnecessary postural strain
- Multiple Lense Optical: Premium lenses are engineered to maximize light transmission; delivering clear vision with enhanced optical clarity
- Quick Installation:Dual installation design with meticulous craftsmanship facilitates safer and more efficient installation of 1.25 inch telescope accessories
- Upright Image and Lateral Inversion: 1.25 inch 90 degree zenith mirror provide stable observation; obtaining vertically erect with lateral inversion
- Double Installation Options: Dual design includes threaded and 1.25 inch barrels for different mounting needs; but not recommended for Newtonians
10. SVBONY SV223 90 Degree Diagonal Mirror, 99% Reflective Dielectric Coating Erect Image Star Diagonal
- Firm locking; SV223 diagonal mirror has a clicklock locking mechanism; just turn the clicklock to securely fix the accessory; ensuring the eyepiece is installed and used stably; not easy to fall off
- Coating: 99% Reflectivity SV223 diagonal mirror has metal high reflective dielectric coating
- Surface accuracy: 1/10
- High-quality machining out of the aluminum; SV223 star diagonal is composed of High-quality aluminum elements; chic; light and stable; internal antireflection baffling for highest contrast
- 90 degrees design; SV223 star diagonal has a 90 degrees refraction angle; providing a better observation experience when visually observing
Michel
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