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Focal Reducers & Correctors

Items 1 - 25 of 79
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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$164.95 $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.
$99.99 $82.95

Tele Vue Large Field Flattener for Tele Vue 101 or 127 IS Telescopes - LCL-1069

SKU: TLV-LCL-1069
  • Tele Vue Large Field Corrector designed specifically for NP101is and NP127is telescopes.
  • Provides a flattened image field for both the 101 mm and 127 mm Nagler-Petzval APO refractors.
  • Enhances edge-of-field quality for imaging use.
  • Optimally suited for use with CCD sensors measuring 35 mm or larger.
$239.95

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 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

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
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$1,195.00
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

Explore Scientific 2" HR Coma Corrector - HRCC02-00 - NEAF Demo

SKU: CNP-EXS-HRCC02-00
  • NEAF Demo with a Full Warranty!
  • 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
$299.99 $238.80

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 $954.00
Takahashi 0.72x FS-60CB Reducer-C
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$570.00
Apertura 0.5x Focal Reducer - 1.25" and Extension Tube

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
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

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

William Optics Adjustable 0.8x Reducer/Flattener for Z61 - P-FLAT61R

SKU: WYO-P-FLAT61R
  • This William Optics 0.8x reducer/flattener is adjustable for optimum back focus.
  • This flattener is meant to work with the Zenithstar 61.
  • The FLAT61R is compatible with several types of CCD and CMOS cameras.
  • The flattener is produced with Ohara optical glass.
$258.00

William Optics Adjustable 0.8x Reducer/Flattener for Z73 - P-FLAT73R

SKU: WYO-P-FLAT73R
  • This William Optics 0.8x reducer/flattener is adjustable for optimum back focus.
  • This flattener is meant to work with the Zenithstar 73.
  • The FLAT73R is compatible with several types of CCD and CMOS cameras.
  • The flattener is produced with Ohara optical glass.
$258.00

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