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Until May 2nd, 2025, orders under US$800 will not incur any duties or taxes upon delivery. Please note that orders under US$800 crossing the Canada-USA border after this date will be subject to duties. They will be billed by the carrier, and you will be responsible to pay them. Prioritize ordering items that are in stock!
Until May 2nd, 2025, orders under US$800 will not incur any duties or taxes upon delivery. Please note that orders under US$800 crossing the Canada-USA border after this date will be subject to duties. They will be billed by the carrier, and you will be responsible to pay them. Prioritize ordering items that are in stock!
ZWO FF80-APO Quadruplet Refractor F/6.4

ZWO FF80-APO Quadruplet Refractor F/6.4

by ZWO
SKU ZWO-FF80-APO
$0
$1,299.00 USD - $1,299.00 USD
$1,299.00
$1,299.00 USD - $1,299.00 USD
$1,299.00 USD
  • Quintuplet air-spaced APO
  • High-quality ED glass
  • Small and round stars
  • Support full frame cameras
  • 44mm image circle
Availability:
1 in stock

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More information

  • ZWO FF80-APO - Overview

    The ZWO FF80 APO is a refractive astrograph with the powerful flatfield optical design which saves you from the expensive cost of a field flattener. It eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging. This makes the whole setting up process much more convenient, and saves your time, allowing you to pay more attention to the image shooting itself.

    The FF80 APO is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus, and can even be used to observe planets with a super-high magnification eyepiece.

    The FF80 APO adopts a 3+1 quadruplet lens structure which contains two pieces of ED glass that can effectively reduce chromatic aberration and enhance clarity and sharpness. It supports the full-frame imaging circle and has a fine spot diagram with tiny distortions of the peripheral stars. The 3" rigid focuser comes with a new-type 360° rotator with scales and a finder base. M76, M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2" female thread for installing filters.

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    Quadruplet air-spaced APO

    The FF80 APO is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations.

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    44mm image circle

    The FF80 APO supports full frame cameras, such as ASI6200, which gives you a larger field of view.

    The stars are small and round with a central RMS radius of 2.5 microns.

    Self-flattening design

    There is no need for a separate field flattener.

    The FF80 APO eliminates the trouble of calculating the back focus distance of the flattener and connecting various accessories to achieve that distance. You can

    Just connect any possible accessories you need. As long as the target is focused, the whole optical system is perfect for imaging.

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    Various adapters

    The FF80 APO comes with M76/M68/M54/M48 adapters.

    The M48 adapter has a 2" female thread for installing filters.

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    High-Precision Dual-Speed Focuser

    The telescope is equipped with a smooth, dual-speed (1:10) focuser that allows for fine adjustments, ensuring precise focus during both visual observation and astrophotography.

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    44mm Image Circle

    The FF80 APO supports full frame cameras, such as ASI6200, which gives you a larger field of view.

    The stars are small and round with a central RMS radius of 2.5 microns.

    Supports full frame cameras.

    Performance Demonstration

    You can click on the images to view the full size.

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