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SVBONY SV221 Diagonal Mirror 1.25 inches, 45-Degree Correct-Image Prism Diagonal Provides Sharp Views That are Right-Side-Up and Correct Left-to-Right for Refractor Telescope

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$21.59

$ 9 .99 $9.99

In Stock

1.Size:45 Degree


  • Clear views; 45-degree correct-image prism diagonal provides sharp views
  • Innovative design; the main mirror housing is made of precision molded ABS plastic; and the two end barrels are precision machined from aluminum
  • Brass lock screw and compression rings; equipped with brass lock screw and compression rings for precise connection and protection against scratches and damages
  • Supports 1.25-inch filters; featuring multi-coated (MC) surfaces; and supports the connection of 1.25-inch filters for versatile observations
  • Erect Image observation; provides erect image observation without image inversion
  • Full field coating; features multi-coating for comfortable viewing experience
  • Clear Aperture; offers a clear aperture of 19mm; ensuring clear observation results
  • Dustproof design; comes with a dustproof cover to keep the lens clean
  • Screw clamping system; features a screw clamping system for secure and easy usage
  • Wide compatibility; designed for refractor telescopes and some catadioptric telescopes like schmidt-cassegrain and maksutov-cassegrain; not compatible with newtonian/dob reflector telescopes



4.4 out of 5 stars Best Sellers Rank
  • #4 in Telescope Diagonals
Date First Available July 5, 2023 Manufacturer SVBONY Country of Origin China

Product Description

SV221 diagonal mirror

SV221 diagonal mirror reflects the telescope’s light path 45 degree to provide a more comfortable viewing angle, suitable for observing objects overhead. Correct upside down and left right reversed image, the view image is upright.

brass pressure ring
Protect eyepieces

Brass pressure ring

SV221 diagonal mirror have brass compression ring design, provides a uniform pressure receiving area when holding the eyepiece, fingertip screw clamps accessories effortless fixes more firmly and will not damage your eyepieces

Convenient to use

Large thumb screws

SV221 diagonal mirror have large thumb screws allow you to twist more conveniently during use, the operation is more portable, and it can be easily fixed even if wearing gloves in winter.

large thumb screws
applicable scene

You can use SV221 diagonal mirror to observe the moon and planets, suitable for a variety of scenarios

Specification:

Inner Connection (Lens Sided) Thread M28.5x0.6
Outer Connection (Lens Sided) Barrel 1.25inch
Inner Connection Clamp 1.25inch
Coating Multi-Coated (MC)
Image Orientation Erect image, non-reversed
Optical Length appr. 86mm
Clamping System Screw clamps
Deflection Angle 45°
Clear Aperture 19mm
Material Plastic & metal
Net Weight 79g/2.78oz

Customer
Reviewed in the United States on February 17, 2025
Works swell with our telescope!
Lara E. Bee
Reviewed in the United States on January 22, 2025
I love the 90 degree angle! Since I have neck problems, this makes it much easier to use the telescope than a 45 degree piece. I would strongly recommend this one. It has a great image quality, better than expected and awesome for the price.
Hrant M.
Reviewed in the United States on January 1, 2025
for most of observations 90 degrees is not convenient, for the rest I cannot say anything bad about this
mack
Reviewed in the United States on July 16, 2024
There is no screw for the compression ring.
MetroGnome
Reviewed in the United States on December 4, 2024
Works great for daytime terrestrial viewing and did not cost near what the "name brands" do.
Customer
Reviewed in the United States on December 31, 2024
So a number of things, one I received this as a Christmas gift from family, two I'm very new to the hobby of telescopes and the accessories for them and three I just didn't know these do not work with Reflector telescopes but only Refractor, with all that being said, the piece looks and feels well made, looks clear and came with all parts needed and as far as that goes I am happy, just an error on the part of me not knowing and family didn't know either so it is sadly completely useless and way outside of the return date. All in all again I think overall it would be great for the price, the fit, weight, and as far as I could tell color and brightness looked good, just could not get it to work on my Reflector scope, but with my eyepiece and the 45 it looked good lol. Again no one's fault really, again I'm new and had no idea so now I know. Still would recommend for anyone starting out with a Refractor scope, because I believe it would work great.
Customer
Reviewed in the United States on November 18, 2024
Another well-made product from SVBony. Works well in my small mak.
John of all trades
Reviewed in the United States on April 2, 2024
Bought this so I could use my Astro telescope for terrestrial viewing instead of buying a separate scope. Like most of the SVbony stuff I've tried it's made pretty well for the price point and works well. At less than $25 it's much cheaper than buying a separate scope and I don't have to store another scope so it's a win-win in my book.
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