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Telescope Accessories & Parts

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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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$149.95 $134.95
 

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
 

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
 

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 flattner 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
 

Sky-Watcher 0.85X Reducer/Corrector for Pro 100ED Telescope - S20201

SKU: SKY-S20201
  • Optimized for Sky-Watcher Pro 100ED apochromatic refractor telescopes, the SkyWatcher 0.85x Focal Reducer/Corrector enables faster optics for improved astrophotography performance.
  • Reduces the focal ratio of 100 mm Pro ED APO refractors from f/9 to f/7.56.
  • In addition to lowering the 100 mm Pro ED's effective focal length, this accessory also improves field-edge correction considerably.
  • Works best in conjunction with Sky-Watcher M48 T-ring adapters.
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$249.00
 

Sky-Watcher 0.85X Reducer/Corrector for Pro 120ED Telescope - S20202

SKU: SKY-S20202
  • This SkyWatcher 0.85x Focal Reducer/Corrector is designed for those who wish to bolster their Sky-Watcher Pro 120ED APO refractor's astro-imaging capabilities.
  • Reduces the focal ratio of 100 mm Pro ED APO refractors from f/7.5 to f/6.3
  • Provides effective focal length reduction by a factor of 0.85x while greatly improving field-edge correction.
  • Works best in conjunction with Sky-Watcher M48 T-ring adapters.
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$249.00
 
Stellarvue 0.72 Focal Reducer & Field Flattener for SVA130T 3" Feather Touch Focuser with 48 mm Camera Adapter

Stellarvue .72 Reducer/Flattener for SVA130T-3FT with 48 mm Camera Adapter - SFFR72-130-3FT-48

SKU: STV-SFFR72-130-3FT-48
  • Stellarvue 0.72x Focal Reducer and Field Flattener expressly designed for Stellarvue SVA130T refractor telescopes with 3" Feather Touch focuser.
  • Converts the Stellarvue 130 mm f/7 refractor into a faster f/5 instrument for wide field imaging.
  • Offers 55 mm of backfocus with 48 mm male camera thread using supplied adapters.
  • Best suited for full frame DSLR camers with larger 48 mm t-rings.
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$695.00
 
Stellarvue 2" Field Flattener Reducer for SV80 with 2.5" Focusers

Stellarvue SV80 2" Flattener 0.8X Reducer for Access 80 - SFFR80-25

SKU: STV-SFFR80-25
  • This Stellarvue 2" Field Flattener and Focal Reducer provides 0.8x reduction for older SV80ED and current 80 mm Access refractor telescopes.
  • Offers a secure connection between the camera with t-ring installed and focuser with no thumbscrews required.
  • Features 55 mm of backfocus to match that of a DSLR camera with appropriate t-ring.
  • Not suitable for use with SV80 triplet refractors made from 2018 to the present.
$189.00
 
Stellarvue 2" Field Flattener Reducer for SV102 with 2" Focusers

Stellarvue SV102 2" Flattener 0.8X Reducer for 2" Focusers - SFFR102-2

SKU: STV-SFFR102-2
  • Combining a 2" Field Flattener and 0.8x Focal Reducer, the Stellarvue SFFR102-2 is optimally suited for use with Stellarvue SV102T triplet refractor telescopes.
  • Enables faster optics by allowing f/7 telescopes to operate at a f/5.6 focal ratio.
  • Fits the Stellarvue 102 mm f/7 Triplet's 2" focuser.
  • The SFFR102-2 has 55 mm of back focus, identical to that of a DSLR camera with appropriate t-ring.
$195.00
 

Stellarvue SV102 2" Flattener 0.8X Reducer for 2.5" Focusers - SFFR102-25

SKU: STV-SFFR102-25
  • The Stellarvue SFFR102-25 is a combination 2" Field Flattener and 0.8x Focal Redcuer optimized for use with Stellarvue SVR102T refractor telescopes.
  • Converts the f/7 SVR102T with 714 mm focal length into a faster f/5.6 instrument with 571 mm focal length.
  • Compatible with the 2.5" Stellarvue or Feather Touch focuser featured on the Stellarvue SVR102T.
  • The SFFR102-25 has 55 mm of back focus, identical to that of a DSLR camera with appropriate t-ring.
$199.00
 
Stellarvue 2" Field Flattener Reducer for SV102T with 3" FT Focusers

Stellarvue SV102 2" Flattener 0.8X Reducer for 3" FT Focusers - SFFR102-3FT

SKU: STV-SFFR102-3FT
  • This combination 2" Field Flattener and 0.8x Focal Reducer from Stellarvue is specifically designed for SVR102T Refractors using a 3" Feather Touch focuser.
  • Converts the f/7 SVR102T with 714 mm focal length into a faster f/5.6 instrument with 571 mm focal length.
  • One end of this reducer/flattener threads onto the 3" Feather Touch focuser while the other end screws into a DSLR or CCD camera's t-ring.
  • The SFFR102-3FT has the same back focus, 55 mm, as a DSLR camera with proper t-ring.
$239.00
 
Stellarvue 2" Field Flattener Reducer for SV115T with 3" FT Focusers

Stellarvue SV115 2" Flattener 0.8X Reducer for 3" FT Focusers - SFFR115-3FT

SKU: STV-SFFR115-3FT
  • 2” Field Flattener and 0.8x Focal Reducer combination for Stellarvue SV115 refractors using a 3” Feather Touch focuser.
  • Provides the Stellarvue 115 mm refractor telescope with an effective focal length reduction from f/7 to f/5.6.
  • Threads onto the SV115's 3" Feather Touch focuser.
  • M42 threads on the camera side for compatibility with standard DSLR T-rings or cameras with 42 mm threads.
  • For DSLR imaging, your camera plus proper M42 spacer are required to have a 55 mm back focus.
$239.00
 
Stellarvue 2" Field Flattener Reducer for SV115T with 2.5" Focusers

Stellarvue SV115 2" Flattener 0.8X Reducer for 2.5" Focusers - SFFR115-25

SKU: STV-SFFR115-25
  • This Reducer/Flattener is made especially for Stellarvue SV115 refractors with 2.5" Stellarvue and Feather Touch focusers.
  • Enables effective focal length conversion from f/7 (805 mm) to f/5.6 (644 mm).
  • Standard 48 mm filter thread helps ordinary 2" filters enhance this reducer/flattener when imaging.
  • 55 mm back focus is required to match that of your DSLR camera plus appropriate spacer for DSLR imaging.
$229.00
 
Stellarvue 2" Field Flattener Reducer for SV115 with 2" Focusers

Stellarvue 2" Flattener & 0.8X Reducer for SV115 Refractors with 2" Focusers - SFFR115-2

SKU: STV-SFFR115-2
  • Reducer & Flattener for Stellarvue SV115 with 2" focuser
  • Changes the effective focal length from f/7 to f/5.6
  • Telescope side slides into the 2" focuser
  • Camera side has M42 threads for standard DSLR T-rings or cameras with 42 mm threads
  • Back focus is 55 mm for DSLR imaging, add M42 spacers to match back focus required for your camera
$195.00
 

Sky-Watcher 0.85X Reducer/Corrector for Pro 80ED Telescope - S20200

SKU: SKY-S20200
  • This SkyWatcher 0.85x Focal Reducer/Corrector is designed for those who wish to bolster their Sky-Watcher Pro 80ED APO refractor's astro-imaging capabilities.
  • Decreases your 80 mm ProED's focal ratio from f/7.5 to f/6.3.
  • Provides effective focal length reduction by a factor of 0.85x while greatly improving field-edge correction.
  • Optimally suited for use in conjunction with Sky-Watcher's M48 T-ring adapters.
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$249.00
 
Explore Scientific 3" Field Flattener + 0.7x Focal Reducer

Explore Scientific 3" Field Flattener & .7X Focal Reducer - FFFR507X-00

SKU: EXS-FFFR507X-00
  • This field flattener and focal reducer package is for the Explore 152 or 127 Triplets with 3" focusers
  • Flattens the field beautifully and reduces effective focal length by 0.7X
  • 55 mm of back focus from rear flange
  • Includes 3" adapter and M42 photo adapter
  • Optional adapters available for 2.5" HEX focuser & 2" focuser
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$449.99
 
Stellarvue SV70T Focal Reducer and Field Flattener

Stellarvue SV70T Focal Reducer and Field Flattener - SFFR-70APO

SKU: STV-SFFR-70APO
  • Stellarvue Focal Reducer and Field Flattener for the SV70T APO Triplet Refractor.
  • Converts the effective focal length of the Stellarvue SV70T from 420 mm (f/6) to 336 mm (f/4.8).
  • Standard M48 thread permits the addition of 2" filters for imaging.
  • 55 mm back focus for DSLR imaging increases to 66 mm with the removal of the included 11 mm extension tube.
  • Optional 42 mm spacers are available for obtaining the appropriate back focus distance for your CCD camera.
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$179.00
 
Stellarvue SFFR80A Field Flattener & Reducer

Stellarvue 0.8X Reducer & Flattener for SV80A Access - SFFR80A

SKU: STV-SFFR80A
  • This Stellarvue 2" Field Flattener and Focal Reducer provides 0.8x reduction for the SV80A Access doublet refractor telescope.
  • Converts the 80 mm f/7 Access refractor into a faster f/5.6 instrument with a 448 mm effective focal length.
  • Features 55 mm of backfocus to match that of a DSLR camera with appropriate t-ring.
  • Accepts standard 2" filters as well as spacers with M42 threads for CCD imaging.
  • Not compatible with the Stellarvue SV80ST triplet refractor.
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$189.00
 
Meade Series 6000 2" 3-Element Focal Reducer/Field Flattener

Meade Series 6000 3-Element 2" 0.8x Field Flattener - 661000

SKU: MEA-661000
  • This Meade 2” Series 6000 Focal Reducer & Field Flattener helps astrophotographers capture wide-field celestial images via a fully multi-coated three-element optical design.
  • Made especially for reducing the focal length of Meade 80 mm Series 6000 APO refractor telescopes in order to provide a more expansive field of view.
  • Provides a 0.8x reduction in focal length.
  • Cameras attach easily via M42 outside diameter T-threads.
  • Contributes 55 mm of back focus plus an additional 11 mm with the included spacer.
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$249.00 $224.00
 
Meade Series 6000 0.8x 3-Element Focal Reducer & Field Flattener - 3"

Meade 0.8x 3-Element Series 6000 Field Flattener - 3" - 661001

SKU: MEA-661001
  • This Meade 3” Series 6000 Focal Reducer & Field Flattener helps astrophotographers capture wide-field celestial images via a fully multi-coated 3-element optical design.
  • Reduces the focal length of Meade 115 mm and 130 mm Series 6000 APO refractor telescopes by a factor of 0.8x to increase the width of the view field.
  • Easy camera attachment enabled by M48x0.75 outside diameter thread.
  • Contributes 55 mm of back focus to your imaging system.
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$349.00 $314.00
 
Optec NextGEN MAXfield with Spot Diagram

Optec NextGEN MAXfield 0.33X SCT Telecompressor - 17403

SKU: OPT-17403
  • This Optec NextGEN MAXfield 0.33x Telecompressor converts classic f/10 Schmidt-Cassegrain telescope systems into extremely fast f/3.3 systems, and f/11 SCT's into much faster f/3.7 instruments.
  • The telescope side contains a 2" barrel that is compatible with the Optec TCF-S or any 2" focuser or accessory, while the camera side contains a 2.1" diameter dovetail for accepting an optional camera adapter.
  • Although the Optec NGM is suitable for use with a wide variety of imaging cameras with the appropriate mounting adapter, it is optimally equipped for C-mount cameras.
  • Internal optics for the Optec NextGEN MAXfield TeleCompressor were developed using Zemax optical design software.
  • Available both individually and with a camera mounting adapter.
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$325.00
 
Spot Diagram for Optec Ultra WideField

Optec NextGEN Ultra WideField 0.7XL Telecompressor - 17409

SKU: OPT-17409
  • Optimally suited for APO refractors such as the Takahashi FS Series, this Optec NextGEN Ultra Widefield Telecompressor also works with telescopes like the Meade ACF or Celestron EdgeHD that feature well-corrected optics.
  • Although this high quality 4-element Optec TeleCompressor is compatible with f/5.6 to f/20 focal ratio systems, it is optimized for converting f/8 telescopes into f/5.6 telescopes.
  • The telescope side contains a 2" barrel that is compatible with the Optec TCF-S or any 2" focuser or accessory, while the camera side contains a 2.1" diameter dovetail for accepting an optional camera adapter.
  • With the proper optional mounting adapter, the Optec NGUW can be made to fit a wide range of imaging cameras.
  • Internal optics for the Optec NextGEN MAXfield TeleCompressor were developed using Zemax optical design software.
  • Available both individually and with a camera mounting adapter.
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$325.00
 
Stellarvue Reducer & Field Flattener for SVR90T-25SV Refractor

Stellarvue Reducer/Flattener for SVR90T with 2.5" Focuser - SFFR90-25

SKU: STV-SFFR90-25
  • Stellarvue 0.8x Focal Reducer and Field Flattener expressly designed for the SVR90T triplet refractor telescope.
  • Compatible with both 2.5" Stellarvue and 2.5" Feather Touch focusers.
  • Reduces the 90 mm triplet refractor's effective focal length from 540 mm f/6 to 504 mm f/5.6.
  • Accepts standard 2" filters with 42 mm thread for CCD imaging.
  • Contains identical 55 mm back focus to that of a DSLR camera with t-ring.
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$229.00
 
Stellarvue Focal Reducer & Field Flattener for SVA130T with 3" FT Focuser - No Camera Adapters

Stellarvue Reducer/Flattener for SVA130 with 3" Feather Touch Focuser - Camera Adapters Not Included - SFFR72-130-3FT

SKU: STV-SFFR72-130-3FT
  • Designed specifically for Stellarvue SVA130T refractor telescopes with 3" Feather Touch focusers, this Reducer/Flattener provides 0.72x focal reduction.
  • Converts the Stellarvue 130 mm f/7 refractor into a faster f/5 instrument for wide field imaging.
  • Features M82 rear thread and provides 69 mm of backfocus.
  • Does not include the adapters required to achieve proper spacing for your particular camera.
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$649.00
 
Stellarvue Focal Reducer & Field Flattener for SVA130 with 3" FT Focuser and 42 mm Male Adapter

Stellarvue Reducer/Flattener for SVA130 with 3" Feather Touch Focuser and M42 Adapter - SFFR72-130-3FT-42

SKU: STV-SFFR72-130-3FT-42
  • Designed specifically for Stellarvue SVA130T refractor telescopes with 3" Feather Touch focusers, this Reducer/Flattener provides 0.72x focal reduction.
  • Reduces the SVA130T's effective focal length from f/7 to f/5 for a faster optical system.
  • Includes the adapters needed to achieve the required 55 mm backfocus with cameras using standard 42 mm male thread.
  • Optimally suited for APS-sized DSLR cameras with standard t-rings.
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$695.00