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Focal Reducers

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  1. ASA - 2"  Schmidt-Cassegrain  Reducer 0.77x

    ASA - 2" Schmidt-Cassegrain Reducer 0.77x

    The reducer will correct the focal length down by a factor of 0,77x. It is perfectly suitable for perfect image performance onto APS-C format sized CCD chips. ... Learn More
    Model#: 2SCKORR
    $749.00

  2. ASA - 2" Barlow Corrector 1.8x

    ASA - 2" Barlow Corrector 1.8x

    To correct the field of view ASA uses the correctors designed by Dipl. Phys. Philipp Keller. All correctors have sufficient backfocus to be connected to all popular camera systems.

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    Model#: 2KORRB
    $1,287.00

  3. ASA - 2" Coma Corrector Quattro 1.175x

    ASA - 2" Coma Corrector Quattro 1.175x

    The corrector is optimized for CCDs with a diameter of 30 mm (APS-C Format); however, this can be extended to up to 40 mm with some minor loss of performance and increased vignetting.

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    Model#: 2KORRC
    $950.00

  4. 2KORRR

    ASA - 2" Reducer Corrector 0.73x

    To correct the field of view ASA uses the correctors designed by Dipl. Phys. Philipp Keller. All correctors have sufficient backfocus to be connected to all popular camera systems.

    ...
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    Model#: 2KORRR
    $1,086.00

  5. ASA - 3" Reducer Corrector 0.73x

    ASA - 3" Reducer Corrector 0.73x

    To correct the field of view ASA uses the correctors designed by Dipl. Phys. Philipp Keller. All correctors have sufficient backfocus to be connected to all popular camera systems.

    ...
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    Model#: 3KORRR
    $1,535.00

  6. ASA - 3" Wynne Corrector 0.95x

    ASA - 3" Wynne Corrector 0.95x

    To correct the field of view ASA uses the correctors designed by Dipl. Phys. Philipp Keller. All correctors have sufficient backfocus to be connected to all popular camera systems.

    ...
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    Model#: 3KORRW
    $1,287.00

  7. ASA - 4" Wynne Corrector 1.0x

    ASA - 4" Wynne Corrector 1.0x

    To correct the field of view ASA uses the correctors designed by Dipl. Phys. Philipp Keller. All correctors have sufficient backfocus to be connected to all popular camera systems.

    ...
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    Model#: 4KORRW
    $1,885.00

  8. Celestron - Reducer / Corrector f/6.3

    Celestron - Reducer / Corrector f/6.3

    This combination focal reducer and field corrector lens accessory works with all Celestron 5\", 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. The Reducer/Corrector is f/6.3 for C5, C8, C9.25 and C11 telescopes and f/7 for the C14 telescope.

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    Model#: 94175
    $149.00

  9. Denkmeier - 2 " Star*Sweeper for SCTs (Reducer)

    Denkmeier - 2 " Star*Sweeper for SCTs (Reducer)

    This is the original Patent Pending Denkmeier SCT Richfield Star*Sweeper that changed the way that binoviewers are used on SCT telescopes and many Maksutovs as well. These reducers cannot be used with Newtonians or Refractors because back focus is limited ... Learn More
    Model#: STSW-2
    $149.00

  10. Explore Scientific 3" Field Flattener .7x Focal Reducer for ED APO 152mm f/8

    Explore Scientific - 3" Field Flattener .7x Focal Reducer for ED APO 152mm f/8 - Includes 2" Adapter for Explore Scientific new style focusers

    3-inch filed flattener and 0.7x reducer for Explore Scientific 152mm ED APO.

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    FREE SHIPPING
    (48 States)
    Model#: FFFR507X-00

    Regular Price: $844.99

    Special Price: $379.99

  11. FP496

    Farpoint - Focal Reducer - F 0.5 & F 0.33 focal reducer for 1.25 " telescope nosepieces

    F0.5 & F0.33 focal reducerFits standard 1.25" focusersTwo lens system for better correctionImproved green multicoatingMetal and glass constructionExposure TimesWhen attached to a telescope the f0 ... Learn More
    Model#: FP496
    $50.00

  12. Focal reducer 0.5x with M28.5mm thread

    iNova - Focal reducer 0.5x with M28.5mm thread

    For autoguiding, this iNova accessory is recommended in order to reduce the F-ratio of an instrument (with a high F-ratio) used as a guide telescope (refractor, Maksutov-Cassegrain or Schmidt-Cassegrain).

    ...
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    Model#: Focal reducer 0.5x with M28.5mm thread
    $32.40

  13. iNova - Focal reducer 0.72x with C Mount thread

    iNova - Focal reducer 0.72x with C Mount thread

    This iNova accessory features a male C/S mount thread as input and 28.5mm female thread as output (compatible with 1.25’’ filter, or 1.25’’ extension tube).

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    Model#: Focal reducer 0.72x with C Mount thread
    $32.40

  14. Lumicon - 2.5X CCD Compressor Lens for 1.25 Imagers

    Lumicon - 2.5X CCD Compressor Lens for 1.25 Imagers

    The 2.5X CCD Compressor Lens is used to widen the field-of-view of 1.25" Digital Imagers on refractors and SCTs. The LL1025 threads into the "nose-piece" of 1.25" Digital Imagers ... Learn More
    Model#: LL1025
    $142.95

  15. MallinCam - 0.5x Focal Reducer 1.25"

    MallinCam - 0.5x Focal Reducer 1.25"

    Screws on to all 1.25" adapters supplied with MallinCam Video CCD Cameras and other brands which use standard 28mm filter threads.  

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    Model#: OA-06
    $49.99

  16. MallinCam 0.5x Focal Reducer 2"

    MallinCam - 0.5x Focal Reducer 2"

    This is the MallinCam 2" 0.5X Focal Reducer. Install on any adapter or nose-piece with a 2" filter thread (48mm), including the optional Mallincam 2" camera adapter. ... Learn More
    Model#: OA-07
    $79.99

  17. MallinCam - 0.75x Focal Reducer 2"

    MallinCam - 0.75x Focal Reducer 2"

    This is the new MallinCam 2" 0.75X Focal reducer with T mount adapter ring for Ritchey-Chretien optics. ... Learn More
    Model#: OA-08
    $189.99

  18. MallinCam MFR-3 Focal Reducer 0.64x

    MallinCam - MFR-3 Focal Reducer 0.64x

    The MallinCam MFR-3 Focal Reducer is designed for DOB or Newtonian type telescopes, and provides a reduction factor of 0.64x. ... Learn More
    Model#: OA-09
    $139.95

  19. MallinCam MFR-5 II Focal Reducer 0.5x

    MallinCam - MFR-5 II Focal Reducer 0.5x

    The new version of the MallinCam MFR-5 Version II is the most advanced optical focal reducer ever developed for a video CCD camera. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: OA-10
    $249.95

  20. MallinCam MFR-6 Focal Reducer 0.8x

    MallinCam - MFR-6 Focal Reducer 0.8x

    Using this FR will give a 811X510 CCD Sensor the field of view of a 1013X637 one. ... Learn More
    Model#: OA-11
    $139.95

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