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Celestron f6.3 Focal Reducer

Celestron f6.3 Focal Reducer

The Reducer/Corrector is f/6.3 for C5, C6, C8, C9¼ and C11 telescopes and f/7 for the C14 telescope. This reducer will also work well with many other instruments that have the standard SCT rear cell including the Meade LS, LX90 and LX200 series.

If offers wide fields of view with any Schmidt-Cassegrain telescope. Used for astro imaging, it reduces exposure time by a factor of 3, only recommended for standard 1.25" eyepieces when used visually.

Celestron doesn’t offer a f/6.3 Schmidt-Cassegrain telescope, because the design is impractical, with a large central obstruction, and resulting loss in contrast. This, added to the inability to utilize longer focal ratios for certain objects, led Celestron to design the four-element, fully multicoated f/6.3 Reducer/Corrector. Results are amazing both visually and photographically.

Please note - this reducer is not suitable for Celestron Edge HD versions which require dedicated reducers.

Customer Reviews

    Great accessory and fast delivery.  (12/07/2019) Bruno - London


  Excellent piece of kit  It does what it says! Initial test results also look promising on my Altair Astro refractor. I should also add that the service from Harrison telescopes was second to none as usual. I ordered it in the afternoon and it arrived the day after, even though I live in the far north of Scotland!   (20/07/2018) Brian Ritchie - Caithness, Scotland


  Celestron f6.3 Focal Reducer  When using my Celestron CPC925 and Nikon D3200 digital SLR, I could not get the whole of the moon included in 1 shot. This focal reducer has completely solved that problem and the results I have achieved are very sharp with good contrast. Delivery was the following day.   (19/10/2017) Jack Hutson - South Ayrshire


  celestron F6.3 reducer  Really useful accessory. With my celestron C8 at F6.3 and 32mm plossl eyepiece, I get 1.2 degree fov, with stars sharp right to the edge! High quality optics from celestron, as you'd expect. First class service from harrison telescopes, with next day delivery, and real time online inventory.   (29/04/2017) matt culver - kent


  Worth the price!  Not a cheap part, but excellent celestron quality, and does a fantastic job if you need a focal reducer that fits straight onto your celestron scope. I used this with my nexstar 8se. Excellent service from Harrison as always, fast delivery.   (13/04/2017) James - Cotswolds, UK


Our standard delivery charge for most of the UK is £2.95. All orders are shipped promptly, lower value items are sent Royal Mail 1st class and higher value or larger goods are shipped via reputable courier. All goods are shipped fully insured with FEDEX, UPS, DPD and Royal Mail, we do not use budget courier services, please note we can only ship to UK mainland addresses. We are not able to ship to forwarding agents or PO boxes.

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Celestron f6.3 Focal Reducer

MPN: 94175





Price: 99.00


The Celestron f/6.3 focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes. This clever accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality.



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