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Canada's top-tier Telescopes & Accessories

Field Flattener & Reducers

17 products

  1. $27.99 USD

    Explore Scientific: Connect your Bresser Microscope or Telescope with a Nikon SLR camera and take images or videos of your observed object! The Bresser T-Mount is the connecting piece between the camera adapter and SLR camera. To find out what T2-ring you need, look into the instruction manual of your camera.This T-ring has a working length of 8.5 mm.

    Out of Stock
  2. $27.99 USD

    Explore Scientific: Connect your Microscope or Telescope with a Canon EOS SLR camera and take images or videos* of your observed object! T-Mounts are the connecting piece between the camera adapter and the SLR camera. Please read the instruction manual of your camera to find out which T-Mount you need, look into the instruction manual of your camera.

    Out of Stock
  3. $289.99 USD

    Explore Scientific:  3x Explore Scientific Focal Extender; 2-inch Barrel; 4 Elements

    This 2'' Focal Extender from Explore Scientific offers 3X magnification, and comes with a 2'' compression adapter. Explore Scientific Focal Extenders are great for either visual or imaging use. Insert them before the diagonal or after the diagonal and get the same magnification regardless. For imaging, you can introduce the focal extender anywhere between the telescope and the camera, allowing you to add an accessory like a filter wheel without worrying about changes in magnification.

    All Explore Scientific Focal Extenders are fully multi-coated and each element has blackened edges for increased contrast and prevention of internal reflections.

    Out of Stock
  4. $179.99 USD

    Explore Scientific: A curved focal plane is an inherent feature in most telescope designs and is nothing to note for general stargazers. But, for astrophotographers, the consequences of that same curved plane can ruin hours of patient imaging. Designed for refracting telescopes, Explore Scientific’s Field Flattener can tackle the edge-of-field aberrations caused by this necessary curvature to ensure your long night at the eyepiece will not be in vain. This accessory offers fully multi-coated optics and slides securely into the 2” eyepiece holder.

    Out of Stock
  5. $199.99 USD

    Explore Scientific: A curved focal plane is an inherent feature in most telescope designs and is nothing to note for general stargazers. But, for astrophotographers, the consequences of that same curved plane can ruin hours of patient imaging. Designed for refracting telescopes, Explore Scientific’s Field Flattener can tackle the edge-of-field aberrations caused by this necessary curvature to ensure your long night at the eyepiece will not be in vain. This accessory offers fully multi-coated optics and slides securely into the 2” eyepiece holder.

    Out of Stock
  6. $449.99 USD

    Explore Scientific: Explore Scientific’s 3” Field Flattener .7x Focal Reducer is a multi-faceted accessory designed to enhance your astrophotography experiences. As a field flattener, this piece addresses the edge-of-field aberrations caused by curved focal planes to ensure your night at the eyepiece will result in crisp, true images.

    As a focal reducer, this device will reduce your f-ratio by .7, which results in a wider field of view, brighter images and less exposure time. Recommended for our 127mm and 152mm refracting telescopes, this field flattener/focal reducer boasts fully multi-coated optics and comes with 2 adapters to accommodate different focuser sizes.

    While technically this was designed for the F/8 system, through user experiences and our subsequent testing we have concluded that our 3" Flattener / Reducer performs very well with our F/7 refractors.

    Out of Stock
  7. $329.99 USD

    Explore Scientific: After hours at the eyepiece, you finally get to view the fruits of your astrophotography labors. The stars in the center of the field pop like brilliant precise points of light. But as you survey the image, you notice the stars at the edge have taken on an unnatural comet-like shape. Your long night has been marred by coma. Coma is a common plague of the Newtonian reflector design, and its annoying presence at the outskirts of an image can be a bane for astronomers of all levels.

    Explore Scientific’s Coma Corrector can help you minimize or even eliminate image aberrations caused by this off-axis optical phenomenon even in fast Newtonians. Our 2” coma corrector offers multi-coated lenses, a black-anodized aluminum barrel with spacer markings and a textured rubber grip. Tightly secured by three thumbscrews, this accessory comes with two adapters (.75” and 1”) to secure to your T adapter and a protective cap.

    Out of Stock
  8. $274.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The new FC/FS Multi-Flattener 1.04X is designed as a universal replacement to previous flatteners in the FS and FC series of fluorite doublet telescopes.
    The new FC/FS Multi-Flattener 1.04X is designed as a universal replacement to previous flatteners in the FS and FC series of fluorite doublet telescopes.  The flattener is a two element design that greatly improves the spherical aberration present in doublet telescopes.  This flattener works now only with all FS and FC telescopes currently in production, but also works with many older models.  Each telescope model requires a specific CA ring, as specified in the appropriate system chart.

    Image Circle Diameter    Telescope Model
    44 mm    
    FS-60CB, FC-76D, FC-100D, FC-50, FC-65, FC-76, FS-78

    40 mm    
    FC-100DL, FC-60, FC-100, FC-125, FS-102, FS-128, FS-152
     

  9. $154.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The Takahashi Extender-C2X is designed for the FS AND FC Series of telescopes.  It increase the focal length of these instruments without degrading the optical performance.  This extender is compatible with the FS-60CB, FC-76D, and FC-100D telescopes.

  10. $650.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The Takahashi Extender-Q 1.6X is designed to work with the FS and FC series of Takahashi telescopes.  It extends the focal length of these telescopes by 1.6X.

  11. $506.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The Takahashi Extender-CQ 1.7X is designed specifically for the FS-60CB telescope.  When screwed behind the objective model of the FS-60CB, it converts the telescope to an FS-60Q.  

  12. $453.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The 0.93X flattener for the FOA-60 telescope provides a nearly flat (10 micron) image across the entire image circle.  The flatter reduces the focal length of the telescope to about 495 mm, making it an f/8.2 instrument. 

  13. $770.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The Takahashi Extender 1.7XR converts the FOA-60 telescope to the FOA-60Q, resulting in a final focal length of 901 mm.  When using this extender, the Strehl ratio of the telescope is over 99% across almost the entire visible spectrum.  In spite of the small aperture of the telescope, magnifications of up to 300 times are possible while maintaining a clear image.

     

  14. $730.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The Takahashi Extender QE 1.6X is a combination optical extender and field flattener designed speicifically for the FSQ-106EDX4 telescope.  The five optical element design allows for high magnifaction with a flat field and little chromatic aberation.  The Extender QE is ideal for high magnification lunar and planetary visual observation, as well as CCD imaging.  

     

    The Extender QE features a 2 inch barrel. 

  15. $338.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: Provides FSQ-106EDX4 like field flatness on the FSQ-85EDX
    When originally conceived, the FSQ-85EDX was meant for use with APS-C or smaller CCD or CMOS chips.  At image circle radii beyond about 14 mm, field curvature was evident in larger chips.  This new flattener will greatly reduce this field curvature, resulting in a practically flat field out to a 22 mm image circle radios.

  16. $660.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The Takahashi Extender ED is a 1.5X focal length extender designed for use with the TSA-120, TOA-130/150 and FSQ-85 telescopes.  The extender is constructed using extra-low dispersion (ED) glass and features a 2 inch barrel design..\

  17. $660.00 USD
    specialorder
    Scheduled Delivery

    Takahashi America: The Takahashi Extender-CR 1.5X is designed specifically for the CCA and Corrected Mewlon series of telescopes.  It increase the focal length of these instruments without degrading the optical performance, maintaining pin point stars across the field. 

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