CelestronFocal Reducer & Field Corrector Imaging Accessory – Reduces Focal Length & Ratio 37% – f/10 to f/6.3 – Ideal for Deep-Sky Observing & Astroimaging – Works w/Schmidt-Cassegrain Telescopes

Great product from Celestron and an imoirtant part of the image train on the Celestron 8SE AVX.

Mejora significativamente un Nexstar reduciendo su larga focal, haciéndolo más rápido en la captación de luz. Me gustó la calidad de su óptica. Me ha permitido mejorar las tomas y observación de objetos celestes de cielo profundo. La foto de la Nebulosa de Tarántula no es de gran calidad pero no es culpa del reductor focal. Ya sido una toma una toma con cámara planetaria. Aún lo estoy probando

This focal reducer turns my slow f/10 Celestron C-8 into a much faster f/6.3 telescope! It brightens and flattens the field significantly rendering stars sharp in the corners of my micro four thirds images. Highly recommended!

I am sorry that I did not buy this accessory two years ago. It all began with a used Celestron C5. Then I bought a very nice used Nexstar 8SE and thought wow, I should have done this go-to thing sooner. After a year or so, I moved up to a new Celestron CPC925 and decided to explore video astronomy with an inexpensive Samsung SBC-2000 security cam. Most SCTs have a focal ratio of about f/10 (focal length divided by aperture) but a camera works better with a faster (shorter focal length) scope. The usual way to do that with a video camera is to screw on a small .5x reducer. So I bought on of those for $35 and was just amazed at the detail and colors in the Dumbbell Nebula. Then someone over at Cloudynights.com suggested that try adding a f/6.3 reducer (stacking reducers). So I bought the f/6.3, screwed in on the back of the CPC925, replaced the visual back and diagonal, mounted the camera (without the .5x) and stayed up until 2AM looking at the Orion Nebula. Before heading for bed, I pulled the camera, put in a 20MM 68 degree APOV eyepiece, and had another "Wow!" moment.The Celestron f/6.3 reducer-corrector really brightens the image, widens the field of view, improves contrast and detail, and flattens the image improving the look of stars near the edge of the field of view. Many people leave them on all of the time except when looking at the moon and planets or other high magnification situation.There are other and cheaper reducers on the market and they do work. However not all of them offer the same degree of improvement at the edge of the field of view. Rod Mollise writes "...6.3 r/cs are one of the best--if not the best--SCT accessories to ever come down the pike" and "I'll put it this way...the 6.3 rarely comes off the rear cell of the C8."

Typical Celestron quality. For the money, a decent reducer but only used it for a short period of time as I got rid of the telescope it was used for so it went with it.There was some issues with the outer edges of the images when I used this with a camera.

cumple con lo ofrecido

No compensation whatsoever for this review. I am nobody. Honestly just dipping my big toe in the astrophotography pool with the upcoming eclipse. The reducer is exactly what was needed to allow the sun to fit in the field of view. Simple backfocus with the adapter and ring . I have had several Celestron telescope purchases and they are Double and triple boxed. Solar filter and all components needed available.

I purchased this focal reducer a couple of months ago but had not had the chance to use it until this past Sunday May 15th 2022 when I went to the University of Arizona and setup my scope with others who were there. I was using my Celestron Nexstar 8se and Star Sense to get it aligned with and a 40mm eye piece. I had noticed others were using their phones to get pictures and getting some decent ones at that so I thought I would give it a try and the pics aren't bad even if I do say so myself. I can see I'm going to be using this reducer a lot especially with the 8Se. My next step is to try and get images of the Sun as soon as I am able to.