The 4 Best telescope diagonals (2023 reviews)

Are you planning to buy telescope diagonals, and are you confused about the options ? You have landed on the right page.

Our review process: Show/Hide

Our Top Picks:

Serounder telescope Diagonal Buy: READ REVIEW

a Alstar telescope Diagonal Buy: READ REVIEW

Astromania telescope Diagonal Buy: READ REVIEW

Explore Scientific telescope Diagonal Buy: READ REVIEW

Serounder telescope Diagonal

Buy on Amazon

It is a very good diagonal with a clear image. It is constructed with aluminum alloy housing and stainless steel cover plate, available for long lifespan. The image is inverted (upside down) as these diagonals usually do and it is clear, in focus. It is used for 1.25 inch focus seat and 1.25inch eyepiece.

• Delivers what they promise
• Good brand reputation

a Alstar telescope Diagonal

Buy on Amazon

This Alstar star diagonal has a 1.25" metal barrel. The clamping screws lock the barrel firmly in place without scoring the nosepiece, as is the case with many cheaper products. It is made with machined metal and a quality mirror. The chrome finish not only looks good, but is also practical, as the star diagonal always remains firmly attached to the focuser. This barrel will keep your star diagonal in condition for virtually forever.

• Protective coating on the mirror to ensure a long life, metal barrel
• Useful for refractor and cassegrain telescopes
• Delivers what they promise

Astromania telescope Diagonal

Buy on Amazon

The astromania telescope diagonal is specially designed for your daily usage and has all useful features. The diagonal mirror is designed for use with telescopes that have a 1.25 inch diameter optical path. It has a very solid feel. It is threaded for filters. The two mirror tubes are made of metal to make the structure stronger and more durable. It provides a comfortable 90 degree view from your refractor.

The image is sharper, cleaner, and brighter. It is fits for a 1.25" eyepiece and telescope. This barrel will keep your star diagonal in condition for virtually forever.

• Useful for refractor and cassegrain telescopes
• Protective coating on the mirror to ensure a long life, metal barrel
• Gets the job done with smaller budget telescopes

Explore Scientific telescope Diagonal

Buy on Amazon

Solid construction and light weight, this first surface coated diagonal mirror reflects 99% of the light to help maintain the brightest possible image from your telescope. The Explore Scientific 2-inch Dielectric-Coated Diagonal Mirror comes complete with. The eyepieces are secured in the diagonal with a compression ring lock on both the two-inch eyepiece holder and the.

The coated diagonal mirror comes complete with 2 inch adapter and dust covers. The wide part of the taper prevents the diagonal from accidentally falling out of the focuser if the set screw loosens up. It is a double taper, so it can be smoothly inserted or withdrawn from the focuser.

• Good investment for long term
• Lot of satisfied buyers