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Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.
Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.
ZWO FF65 APO 0.75× Full Frame Reducer

ZWO FF65 APO 0.75× Full Frame Reducer

by ZWO
SKU ZWO-F65RE
$0
$199.00 USD - $199.00 USD
$199.00
$199.00 USD - $199.00 USD
$199.00 USD
  • Shortens the Focal Ratio of the FF65APO
  • Focal Ratio from f/6.4 to f/4.8
  • Reduces the Focal Length to 312mm
  • Reduction Factor of 0.75x
  • Standard 55mm Back Focus
Availability:
1 in stock

International Shipping

More information

  • ZWO FF65 APO 0.75× Full Frame Reducer - Overview

    ZWO FF65 APO 0.75× Full Frame Reducer - Overview

    The ZWO FF65APO 0.75× Full Frame Reducer is a precision optical accessory designed to enhance your astrophotography setup. With a four-element optical design, it reduces the focal length and focal ratio of the FF65APO astrograph, improving the efficiency of your wide-field deep-sky imaging.

    Optical Design and Reduction Factor

    The 0.75× reduction factor shortens the focal ratio of the FF65APO from f/6.4 to f/4.8, allowing for faster exposures and more light gathering.

    Reduces the focal length to 312mm, offering a wider field of view for capturing more of the night sky.

    Enhanced Imaging Performance

    The shortened focal length and faster focal ratio reduce the total integration time, making it easier to capture clear, detailed images of deep-sky objects.

    Standard 55mm Back Focus Distance

    Compatible with a variety of setups, the standard 55mm back focus distance ensures ease of use with a wide range of equipment.

    Convenient and Simple Connectivity

    Comes with M54 and M48 thread adapters for flexible connectivity to your telescope and camera setup.

    Includes a built-in M48x0.75 2” filter thread, allowing for seamless attachment of filters.

    Detailed Setup and Connection Instructions

    1. Prepare the FF65APO Telescope Tube and Reducer:
      Ensure you have the FF65APO telescope tube and the 0.75× reducer ready for installation.

    2. Remove the Eyepiece Holder:


      Unscrew the eyepiece holder from the end of the FF65APO telescope tube.
    3. Remove the End Cap from the Reducer:
      Unscrew the end cap of the 0.75× reducer to prepare it for installation.
    4. Install the Reducer:
      Insert the reducer into the focuser and tighten securely to ensure proper connection.

    Note

    The ZWO FF65APO 0.75× Full Frame Reducer is an excellent tool for astrophotographers looking to expand their imaging capabilities with minimal effort.

    Recommended Usage: Ideal for wide-field deep-sky imaging, providing a wider field of view and shorter exposure times.

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