Astromania 1.25" 90-Degree Erecting Prism Optical Prism Inside Rather Than a Mirror which Makes Your Image Clear and Sharp

$ 32.99

Score By Feature

Based on 60 ratings

Delivery

8.73

Satisfaction

9.17

Value for money

8.67

Customer service

8.68

OveReview Final Score

How Our Score Is Calculated

Product Description

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Normally, you'll see the image turned upside down. But what if you want to take in some natural beauty as well? Transform your telescope into a nature observation telescope with an upright and left-right corrected image by adding this 90-degree erecting prism to it. This is an excellent diagonal for terrestrial use during the day and night astronomy applications with telescopes or spotting scopes.

Comfortable 90-degree observation: Look into your eyepiece from above, filter thread for any 1. Filter is 25" in diameter and accepts standard 1. Eyepieces with a diameter of 25" are available.

The prism produces a bright and clear image because it is made of genuine optically processed BK7 glass with a high-quality optical prism inside rather than a mirror, resulting in a clear and sharp image. The Amici prism resembles binoculars in appearance, but the eyepieces allow you to zoom in much further.

Simply put, the erecting prism should be inserted into the 1. Watch birds, deer at the edge of the forest, the summit cross on a mountain, or a cruise ship far out at sea with your 25" focuser and eyepieces.

The prism housing is precision molded ABS plastic, while the two sleeves are metal, ensuring a secure fit and long grip. Clamp your eyepiece in place with an aluminum clamping screw. As a result, you can look through your telescope sideways without having to worry about the eyepiece falling out. Nature, even if it is far away, will now be at your feet.

Questions & Answers

Is it compatible with the Celestron 127eq?

It's made to work with refractors and Cassegrain telescopes. It isn't compatible with reflectors.

Selected User Reviews For Astromania 1.25" 90-Degree Erecting Prism Optical Prism Inside Rather Than a Mirror which Makes Your Image Clear and Sharp

This prism would be ideal as a backup

4/5

The set screws are not smoothly engaged. Even when the set screws are as tight as possible, it wants to tip over on its own depending on the orientation.

Emiliano Wu

| Sep 12, 2021

Correct viewpoints are now available on the cheap

4/5

Despite the fact that the body is made of plastic, it is very sturdy. The strong stay screw will not mar the surface and will hold the item securely in place. The prism arrived in perfect condition, with sharp views up to 120 times magnification.

Junior Mayer

| Feb 16, 2021

This is a significant improvement over any previous versions

5/5

It's a lot clearer than a mirror 1. 25 diagonal The dust was a real pain before, so I'm going to keep it covered now.

Kinslee McCall

| Feb 03, 2021

It's impossible to focus because the light path is too long

3/5

This was purchased to correct the image in my SVBONY SV106 60mm guide scope (which I adore). The scope cannot be focused due to the 90° prism. The focuser and built-in extension tube both require more inward travel, but they are both at their smallest positions. Other than that, it's useless. Still, I'm going to give it a shot on my primary scope for my 1. Digital astronomy camera with a resolution of 25 inches. Very let down.

Cataleya Davis

| Mar 10, 2021

Products that are consistently good

5/5

At 227x magnification, it's the same as a high-quality moon mirror diagonal. However, the image must be correct.

Virginia Ashley

| Dec 15, 2021

This is a great product, and I am very pleased with it

5/5

It's well-made and durable. As advertised, the image is properly oriented. I had returned a different one because the image was still mirrored even though it was right side up. The eyepiece insert is a little shallow, but unlike many other diagonals, it's made of machined metal rather than plastic.

Jazmin Peck

| Jul 11, 2021

It's enough for now

4/5

It functions satisfactorily, but it is not constructed of the most durable materials. It performs as expected in terms of inverting the image and is clear enough for my purposes.

Bria Mora

| Dec 10, 2021

This is ideal for my needs

5/5

This is ideal for my needs. For manual guiding, I'm using it on a 60mm guide scope. To bring it into focus, I needed a 2x Barlow, which I knew going in. For this type of application, you can buy with confidence.