Astro Essentials 0.5x 1.25'' Focal Reducer

Astro Essentials 0.5x 1.25" Focal Reducer

  (4 Reviews)
✓ 2 year warranty


39x in stock shipped 1-2 working days

About this product

Model:  ae_0.5x_focal_reducer

This useful 0.5x focal reducer can be used with a wide range of modern CCD cameras and eyepieces. 

The doublet optical system features fully multicoated glass elements for enhanced contrast. 

The 1.25" filter-thread screws into regular 1.25" eyepieces, cameras and other photographic accessories to achieve a 40% increase in field of view. 

Effectively reduces the focal telescope's length by 50%. 

NOTE 1: The exact focal reduction varies slightly depending on the position of the Focal Reducer relative to the eyepiece' optics or, when imaging, to the camera's imaging sensor. 

NOTE 2: Not recommended for short focal ratio systems. 


Customer reviews

Average Rating (4 Reviews):  
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Rating (max 5):  
Astro Essentials 0.5x 1.25" Focal Reducer
Monday, 11 April 2022  | 

Does what it says!

Rating (max 5):  
Great product - with practical limitations
Saturday, 20 February 2021  | 

I got this reducer for my 127MAK Scope. FLO service was second to none, as always. I got my shipment (international) in just 2 days.

Now for the product - Below will be relevant for anyone owning a 127 or so MAK (or anything close)

Lightweight, Well built and it does work well as a reducer - with limitations.

Using this with an astro camera. It more than doubled the field of view of my MAK and reduced the exposure times by a huge amount. I now almost have the best of both worlds - excellent optics and portability of MAK - that I can also make 'Fast' with this item.

There's definitely a catch though. If you try to bring out more details in your images, a lot of vignetting and rings will come up. With average processing/stacking, the outer 50% of image will be almost useless (even flats won't repair it). The central 50% of the image will be completely clean. You crop remaining 50% out and you'll be left again with the original Field of View of the scope. This still isn't a problem, because you end up with the same FOV and less image resolution, but with considerably less exposure time for a slow scope.

In the end, its a compromise that I'm happy with. 5 Stars for making this option available.

Rating (max 5):  
Astro Essentials 0.5x 1.25" Focal Reducer
Thursday, 18 February 2021  | 

A good piece of kit. Small, robust and lightweight. Very pleased with it's performance. Thanks.

Rating (max 5):  
Astro Essentials 0.5x 1.25" Focal Reducer
Friday, 4 December 2020  | 

Another excellent product by Astro Essentials. Great quality and works well.


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