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Focal Reducers & Correctors

Items 1 - 25 of 73
Celestron f/6.3 Focal Reducer/Corrector

Celestron f/6.3 Focal Reducer & Corrector - 94175

SKU: CEL-94175
  • For all Schmidt-Cassegrain telescopes; not for EdgeHD models
  • This focal reducer from Celestron reduces the effective focal length by 0.63X
  • Enjoy the wider field of view & faster exposure times at f/6.3 with f/10 telescopes
  • f/11 telescopes, such as the C14 will perform at f/7
  • The Celestron f/6.3 Reducer has four fully-multicoated elements
  • Reduce your exposure times by a factor of 3!
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$154.95

Celestron 0.7X Reducer Lens for 1400 EdgeHD - 94240

SKU: CEL-94240
  • Reducer for Celestron 14" EdgeHD telescopes
  • Shortens inherent focal length from f/11 to f/7.7
  • This reducer cuts your exposure times in half & increases field of view by 43%!
  • Threads directly onto 3.25" rear cell threads
  • Five-element design preserves EdgeHD flat field performance
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$692.95
Celestron 0.7x Reducer Lens for EdgeHD 1100

Celestron Reducer Lens .7x EdgeHD 1100 94241

SKU: CEL-94241
  • Reducer for Celestron 11" EdgeHD telescopes
  • Shortens inherent focal length from f/10 to f/7
  • This reducer cuts your exposure times in half & increases field of view by 43%!
  • Threads directly onto 3.25" rear cell threads
  • Five-element design preserves EdgeHD flat field performance
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$692.95
Celestron 0.7x Focal Reducer for EdgeHD 800

Celestron .7x Focal Reducer For 8 Edge HD - 94242

SKU: CEL-94242
  • Reducer for Celestron 8" EdgeHD telescopes
  • Shortens inherent focal length from f/10 to f/7
  • This reducer cuts your exposure times in half & increases FOV by 43%!
  • Threads directly onto the rear cell of the 8" HD
  • 105 mm of back focus & optimized for APS-C sensors
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$351.95
Baader Planetarium Alan Gee Mark II Telecompressor

Baader Planetarium Alan Gee Mark II Telecompressor - AGII

SKU: BAD-AGII
  • Reduces f/10 SCT's to f/5.9 and produces a sharp, wide, flat field!
  • 35 mm clear optical aperture
  • Designed by Astro-Physics' Roland Christen
  • Air-spaced doublet with 7-layer anti-reflection multi-coatings
  • Four pieces consist of lens cell, two 19 mm spacers (removable) & flanged end ring
  • For f/10 & slower Schmidt-Cassegrain's. Will not work with Meade f/6.3 models
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$297.00

Meade Series 4000 f/6.3 Focal Reducer - 07545

SKU: MEA-07545
  • This Meade Series 4000 Focal Reducer cuts telescope focal ratios by a factor of 0.63x, converting f/10 and f/6.3 telescopes into much faster f/6.3 and f/4 instruments respectively.
  • Threads directly onto Schmidt-Cassegrin SCT rear cells.
  • With this Meade Focal Reducer, imaging exposure times are roughly cut in half.
  • Delivers a wider field of view for visual observations.
$82.95

Tele Vue Focal Reducer Body Adapter for 2" Focuser - RAD-1074

SKU: TLV-RAD-1074
  • This adapter makes TeleVue focal reducers compatible with standard 2" focusers.
  • Enables the use of Tele Vue 0.8x Reducers (NPR-1073 or RFL-4087) on NP101, NP127, or TV102 telescopes.
  • Not suitable for use with NP101, NP127, and TV102 "is" models.
$54.95
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$1,195.00
Apertura 1.25" Focal Reducer

Apertura 0.5x Focal Reducer - 1.25" - A-FR1

SKU: APT-A-FR1
  • Inexpensive 1.25" Focal Reducer by Apertura
  • 0.5X reduction
  • Fully multi-coated doublet in black anodized cell
$29.95
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$395.00
Takahashi 0.72x FS-60CB Reducer-C
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$570.00

William Optics 0.8x Reducer/Flattener - P-FLAT7A

SKU: WYO-P-FLAT7A
  • This William Optics 0.8x reducer/flattener is adjustable for optimum back focus.
  • Adjustment depends on the William Optics refractor with which the flattener is used.
  • This flattener is meant to work with the FLT132, FLT156, GT102, GT153, and the Z126.
  • The FLAT7A is compatible with several types of CCD and CMOS cameras.
  • The flattener is produced with Ohara optical glass.
$598.00

Takahashi 0.66X FC-35 Focal Reducer - TKA19580

SKU: TAK-TKA19580
  • Reducer for Takahashi FC-100DZ, FC-100DF, FC-125, FS-102, FS-128, and FS-152 telescope models
  • Shortens focal length by 0.66x
  • Produces a 44 mm image circle
  • Increases the speed of your optical system for optimized astrophotography
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$1,060.00

Apertura 0.5X Focal Reducer - 2" - A-FR2

SKU: APT-A-FR2
  • Decrease the focal length of your telescope by half with this 2" 0.5x Focal Reducer.
  • Provides a wide field while minimizing exposure times for astrophotography.
  • This 2" 0.5x Focal Reducer contains fully multi-coated optics with two-element optical design.
  • Black anodized lens cell curtails reflections from errant light.
  • Offers considerable flexibility for set up modification.
$54.95
Starizona ApexED 0.65x Focal Reducer and Field Flattener - "L" Version

Starizona Apex ED 0.65x Focal Reducer & Field Flattener - Long Version - APEXED-L

SKU: STZ-APEXED-L
  • Reducer/Flattener for 500 mm+ focal length refractor telescopes and all RC and ACF telescopes
  • This Apex ED Focal Reducer from Starizona reduces the effective focal length by 0.65x
  • Shortens f/5.5 apochromatic refractors to f/3.6, and f/9 RC telescopes to f/5.9
  • Provides a 1.5x wider field of view and 2.4x shorter exposure times
  • Five-Element design ensures no compromise in optical performance
  • Corrects for apo refractor field curvature and astigmatism
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$449.00
Starizona ApexED 0.65x Focal Reducer and Field Flattener - "S" Version

Starizona Apex ED 0.65x Focal Reducer & Field Flattener - Short Version - APEXED-S

SKU: STZ-APEXED-S
  • Reducer/Flattener for 300-500 mm focal length telescopes including 60-80 mm aperture apo refractor telescopes
  • This Apex ED Focal Reducer from Starizona reduces the effective focal length by 0.65x
  • Shortens f/5.5 apochromatic refractors to f/3.6, and f/9 RC telescopes to f/5.9
  • Provides a 1.5x wider field of view and 2.4x shorter exposure times
  • Five-Element design ensures no compromise in optical performance
  • Corrects for apo refractor field curvature and astigmatism
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$449.00

Explore Scientific 2" HR Coma Corrector - HRCC02-00 - Used

SKU: UEQ-13813-EXS-HRCC02-00
  • For Newtonian telescopes with 2" focusers
  • Minimize inherent coma in Newtonians with this Coma Corrector from Explore Scientific
  • 2" Barrel slides into focuser on the telescope side
  • For visual use, use 2" eyepieces directly or insert a 2" to 1.25" adapter (sold separately) for 1.25" eyepieces
  • For photography, both a M42 and M48 threaded adapter are included, allowing you to use a standard or wide T-ring
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$329.99 $243.00
Stellarvue 0.74x Focal Reducer and Field Flattener for SVX80T-3SV Telescopes

Stellarvue .74 Focal Reducer/Flattener for SVX080T-3SV Refractor - SFFR80T-3SV

SKU: STV-SFFR80T-3SV
  • Reduce the effective focal length and flatten the field of your Stellarvue 80mm SVX Refractor!
  • Only for SVX080T with 3" Stellarvue focuser
  • Reduction is .74X, taking the focal ratio from f/6 to f/4.5
  • Threads directly into the focuser for stability
  • 48mm male threads on the camera side accept "wide" DSLR T-rings or cameras with 48mm threads
  • 55 mm of back focus
$395.00

Tele Vue 0.8x Focal Reducer Lens Body for Tele Vue NP Scopes - NPR-1073

SKU: TLV-NPR-1073
  • Tele Vue Focal Reducer for NP and NPis series telescopes.
  • Reduces the effective focal length of Nagler-Petzval refractors by a factor of 0.8x.
  • Best suited for typical 55 mm back focal length SLR camera bodies that accept T-rings.
  • DSLR camera use requires a 2.4” adapter, while CCD camera use requires the proper spacing needed to maintain 55 mm of back focus.
$279.95

Tele Vue 0.8x Focal Reducer/Flattener for Tele Vue 102 Scope - RFL-4087

SKU: TLV-RFL-4087
  • TeleVue combination Focal Reducer and Field Flattener for 102 mm telescopes.
  • Provides a 0.8x effective focal length reduction.
  • Flattens the TV102 telescope's image field in order to optimize imaging results.
  • Designed to fit standard 2" focusers as well as threaded TV102iis accessories.
  • For CCD camera use, the CWT-1070, STL-1071, or TRG-1072 adapter is required to enable connection.
$299.95

Tele Vue 0.8x Focal Reducer/Flattener for Tele Vue 85/Pronto - TRF-2008

SKU: TLV-TRF-2008
  • This Tele Vue 0.8x Focal Reducer and Field Flattener works in conjunction with TV-85 and Pronto telescopes.
  • Transforms the TV-85 into a 480 mm f/5.6 system, and the Pronto into a 380 mm f/5.4 system.
  • Flattens the field in addition to reducing the effective focal length for fast, superior quality astro-imaging operations.
  • Fully multi-coated with 3 elements, this unit fits directly into 2” focusers.
  • Accepts standard T-rings for 35 mm cameras.
$281.95

Baader Planetarium 2" Mark III Multi Purpose Coma Corrector - MPCC

SKU: BAD-MPCC
  • Baader MPCC Mark III 2" Coma Corrector for f/4 - f/6 Newtonians
  • This Coma Corrector does not require additional back focus & does not increase magnification
  • Delivers 12 micron stars across a full 35 mm frame size
  • Telescope side is 2" slip-fit, Camera side is 48mm
  • Except a T-ring to match your DSLR, no other accessories are needed
  • Works with Baader Astro T-2 System components for CCD/CMOS cameras
$207.00
Baader Rowe Triplet Coma Corrector for Newtonian Reflectors

Baader Planetarium Rowe Triplet Coma Corrector for Newtonians - RCC-I

SKU: BAD-RCC-I
  • Rowe Coma Corrector for f/3.5 to f/6 Newtonian's with long working distance
  • Image ratio is 1 : 1
  • Focus position is 91.5 mm from T2 thread, 94.5 mm from M48 thread
  • Telescope side is 2" with M48 filter thread
  • Camera side is M42 and M48
  • Triplet design with Baader phantom coatings on each air-to-glass surface
$209.00

Tele Vue Visual Imaging Paracorr Type-2 - VIP-2010

SKU: TLV-VIP-2010
  • This TeleVue Visual Imaging Paracorr removes coma from the resulting image when performing astrophotography with Newtonian reflector or Dobsonian telescopes.
  • Drastically enhances stars at the edge of the field.
  • The TeleVue Paracorr optical assembly separates from the Tunable Top to enable use with SLR and CCD cameras.
  • Optimally suited for APS-sized formats measuring 27 mm in diameter used with extremely fast f/3 optical systems.
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$487.00
Takahashi CR 0.73X Reducer for Mewlon 250 CRS and FSQ-106EDX4

Takahashi CR 0.73X Reducer - TKA82580

SKU: TAK-TKA82580
  • Reducer for Takahashi Mewlon 250 CRS
  • Also works with the FSQ-106EDX4 & FSQ-85EDX
  • Produces 0.73X reduction of telescope's native focal length
  • 44 mm image circle
$580.00

A focal reducer is an excellent tool to help you achieve the magnification you need, and at High Point Scientific, we provide you with the best selection. A focal reducer, also known as a telecompressor, effectively reduces the focal length of your OTA, resulting in a wider field of view. They are also a great addition to any astrophotography set up as it can cut your exposure time down considerably. Enjoy wide views of large objects such as nebulae with a faster lens speed!


We also have a wide variety of correctors designed for flat-field correction or coma correction. A field corrector is vital for astro-imaging with certain telescope designs because it optimizes edge-of-field image quality. When observing with a Newtonian, coma correctors help reduce comatic aberration or coma. Without a coma corrector, Newtonians may show stars with comet-like tails. Add a coma corrector to your set up to make sure you view celestial objects with pinpoint definition. Also, be sure to check out our extension tubes and adapters to make sure you achieve the necessary back focus for your set up.


You will find focal reducers and correctors from all of the latest brands, including Celestron, Tele Vue, Baader, Takahashi, Sky-Watcher, and many more! Our experts have hand-selected each accessory to give you a quality selection of great products. We are ready to help you get the best views out of your telescope!

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