Skip to content
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 OAG

ZWO OAG

by ZWO
SKU ZWO-OAG
$0
$128.00 USD - $128.00 USD
$128.00
$128.00 USD - $128.00 USD
$128.00 USD
  • Thickness of Only 16.5mm
  • Features an 8*8mm Prism
  • No Guide Scope Needed
  • Adaptable to Various Camera and Telescope Setups
Availability:
1 in stock

International Shipping

More information

  • Description
  • Specifications
  • Diagrams & Ressources
  • In the Box

  • ZWO OAG - Overview

    ZWO OAG - Overview

    The ZWO OAG is a compact and reliable off-axis guider designed for astrophotographers seeking precise guiding without the need for a separate guide scope. Featuring a large 8*8mm prism, it allows for improved guiding performance and is fully compatible with all ZWO ASI cameras. This guider ensures a stable connection to your telescope, minimizing flexing and ensuring optimal image quality.

    Lightweight and Compact Design

    With a thickness of only 16.5mm, the OAG is lightweight, making it a convenient addition to your astrophotography setup.

    Large Prism for Enhanced Guiding

    The OAG features an 8*8mm prism, ensuring a wider field of view for accurate and efficient guiding.

    No Guide Scope Needed

    The OAG allows you to connect both the main imaging camera and guide camera directly, eliminating the need for a guide scope and simplifying your setup.

    Flexible Compatibility

    The OAG is adaptable to various camera and telescope setups, including M42 and M48 connections, providing versatility across different systems.

    Fully Compatible with ZWO ASI Cameras

    The OAG is designed to work seamlessly with all ZWO ASI cameras, ensuring maximum performance and compatibility.

    Stable and Rigid Connection

    The OAG offers a stable, rigid connection to your telescope, reducing the risk of flexing in the imaging train for more reliable results.

    Usage Guide

    1. Calculate Required Distance:
      Before attaching the OAG, ensure the correct back focus distance is calculated for your imaging setup. For example, if using an ASI071, attach a 21mm extender to reach a total back focus distance of 55mm: 17.5mm + 21mm + 16.5mm = 55mm.
    2. Attach the OAG Body to the Telescope
      Remove the guider prism part and attach the OAG body to the telescope.
    3. Insert the Prism
      Once the OAG body is secured, insert the prism part back into the body.
    4. Mount the Guide Camera
      Attach your guide camera to the OAG.
    5. Attach the Imaging Camera
      Screw the T2 or M48 adapter to the imaging camera based on your mount type and secure it to the OAG.
    6. Final Setu
      Ensure the imaging camera is correctly positioned and lock the 3 screws in place to complete the setup.

    Important Notes

    Ensure Prism Clearance:
    Make sure the prism does not obstruct the imaging area of your camera.

    Adjust Focus:
    Use the guiding screw to fine-tune the focus of the guiding camera, ensuring that both the main imaging camera and the guide camera reach focus at the same position. It's recommended to make this adjustment during the daytime for better accuracy, as adjusting at night can be challenging.

  • Mechanical Diagram

    ZWO OAG - Mechanical Diagram

    Connecting Diagram

    ZWO OAG - Connecting Diagram

    • OAG body(with 1.25″ holder and 5mm extender and M42 adapter)

      × 1

    • M48 adapter for main imaging camera(in the box)

      × 1

    • M48-M42 adapter for telescope and flat lens(in the box)

      × 1

    • Hexagon wrench (in the box)

      × 1

    • Spacers (in the box)

      × 4

You may also like

  • $199.00 USD - $199.00 USD
    $199.00 USD
    $199.00 USD - $199.00 USD
    $199.00 USD

    ZWO OAG-L

    ZWO-OAG-L
    1 in stock

    Large Prism Size and Wide Field of View Versatile and Easy to Use Wide Compatibility with Cameras...

    View full details
    $199.00 USD - $199.00 USD
    $199.00 USD
    $199.00 USD - $199.00 USD
    $199.00 USD
  • $180.00 USD - $280.00 USD
    $180.00 USD - $280.00 USD
    $180.00 USD - $280.00 USD
    $180.00 USD

    QHYCCD OAG

    Options available
    2 variants in stock

    &nbsp,There are three models of QHYOAG:&nbsp, QHYOAG-S, QHYOAG-M, and QHYOAG-L for different size sensors.&nbsp, The QHYOAG is a thin a...

    View full details
    $180.00 USD - $280.00 USD
    $180.00 USD - $280.00 USD
    $180.00 USD - $280.00 USD
    $180.00 USD
  • $249.00 USD - $249.00 USD
    $249.00 USD
    $249.00 USD - $249.00 USD
    $249.00 USD

    ZWO FF80 APO 0.76× Full Frame Reducer

    ZWO-F80RE
    1 in stock

    Shortens the Focal Ratio of the FF80APO Focal Ratio from f/7.5 to f/5.7 Reduces the Focal Length ...

    View full details
    $249.00 USD - $249.00 USD
    $249.00 USD
    $249.00 USD - $249.00 USD
    $249.00 USD
  • $249.00 USD - $249.00 USD
    $249.00 USD
    $249.00 USD - $249.00 USD
    $249.00 USD

    ZWO ASI220MM Mini Mono

    ZWO-ASI220MINI

    Ideal for autoguiding 8.81mm diagonal 1920 x 1080 sensor Peak quantum efficiency (QE) of 92% 4μm pixels Description Specifications In the Box D...

    View full details
    $249.00 USD - $249.00 USD
    $249.00 USD
    $249.00 USD - $249.00 USD
    $249.00 USD
  • $25.00 USD - $25.00 USD
    $25.00 USD
    $25.00 USD - $25.00 USD
    $25.00 USD

    ZWO M54(M)-M48(F) Adapter - 21mm

    ZWO-M54-M48-21

    Thread Compatibility 21mm Optical Length Durable Construction Lightweight Desig...

    View full details
    $25.00 USD - $25.00 USD
    $25.00 USD
    $25.00 USD - $25.00 USD
    $25.00 USD