Reducer / Corrector f/6.3
$189.95
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Reducer / Corrector f/6.3
$189.95
f/6.3 Focal Reduction
Faster speeds for deep-sky imaging
3x Faster Exposure
Cuts astrophotography exposure time significantly
4-Element Optics
Fully multicoated premium optical glass
Field Corrector Lens
Provides sharp edge to edge
Broad SCT Compatibility
Fits most standard Celestron SCTs
Dual Focal Ratios
Adds versatility without image compromise
In Stock
Transform Your Telescope PerformanceFaster imaging and wider views
The Celestron Reducer/Corrector, f/6.3 is a versatile optical accessory designed to enhance your Schmidt-Cassegrain telescope for both visual observing and astrophotography. By converting your telescope's focal ratio, this system delivers wider fields of view and significantly shorter exposure times. Experience exceptional edge-to-edge sharpness and optical contrast without compromising overall image quality.
Advanced Optical Reduction SystemMaximize astrophotography exposure efficiency today
Engineered with a four-element, fully multicoated glass design, the Celestron Reducer/Corrector, f/6.3 offers an ingenious solution for astronomers seeking dual focal ratio versatility. Standard Schmidt-Cassegrain telescopes operate at a slower f/10 focal ratio, which requires longer exposure times for deep-sky astro-imaging. This precision corrector reduces focal ratios to f/6.3 for 5", 6", 8", 9.25", and 11" optical tubes (and f/7 on 14" models), effectively reducing astrophotography exposure times by a factor of 3. Beyond speeding up exposure times, the lens acts as a field corrector to eliminate field curvature, ensuring pin-point star sharpness across the full field of view for both astrophotographers and visual observers alike.
Technical SpecificationsDetailed optical and hardware specifications
Product Name
Celestron Reducer/Corrector, f/6.3
Part Number
#94175
Focal Reduction Ratio
f/6.3 (C5, C6, C8, C9.25, C11) / f/7 (C14) (aperture)
Lens Design
4-Element
Optical Coating
Fully Multicoated
Telescope Compatibility
Celestron 5", 6", 8", 9.25", 11", and 14" Schmidt-Cassegrain
Incompatibility
Celestron EdgeHD Optical Systems (x)
Primary Application
Astrophotography and Visual Astronomy
Key Optical FeaturesEngineered for maximum optical clarity
Focal ReductionConverts standard f/10 systems to f/6.3 for wider views
Exposure ReductionCuts deep-sky exposure times by a factor of 3
Optical ConstructionPremium 4-element fully multicoated optical glass
Field CorrectionFlattens the field of view for sharp edge-to-edge images
Dual Focal RatiosFlexible focal configuration without changing telescope tubes
Telescope VersatilityDirect thread-on compatibility for standard Schmidt-Cassegrain OTAs
Frequently Asked QuestionsEverything you need to know
What telescopes are compatible with the Celestron Reducer/Corrector, f/6.3?
The Celestron Reducer/Corrector, f/6.3 is compatible with all standard Celestron 5", 6", 8", 9 1/4", 11", and 14" Schmidt-Cassegrain telescopes. It is not compatible with Celestron EdgeHD optical systems.
How does the Celestron Reducer/Corrector, f/6.3 benefit astrophotography?
By lowering the focal ratio to f/6.3, the Celestron Reducer/Corrector, f/6.3 widens the field of view and reduces required astrophotography exposure times by a factor of 3, allowing you to capture brighter deep-sky photos much faster.
Does the Celestron Reducer/Corrector, f/6.3 cause loss of contrast or image quality?
No, the four-element, fully multicoated optical design flattens the optical field and corrects curvature, preserving optimal contrast and edge-to-edge image sharpness for visual observing and photography.