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June 24th: Store is closed for Quebec National Holiday. Orders placed that day will ship on June 25th.
ZWO T2 Tilter II

ZWO T2 Tilter II

by ZWO
SKU ZWO-T2-Tilter-II
$48.00 - $48.00
$48.00
$48.00 - $48.00
$48.00
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  • Corrects sensor tilt for sharp stars edge-to-edge
  • Eliminates Newton's rings in H-alpha solar imaging
  • Adds only 11 mm of back focus to the imaging train
  • Features standard M42x0.75 T2 threads on both sides
  • 78 mm diameter with direct connection to 2" EFW filter wheels
2 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • ZWO T2 Tilter II for ASI Cameras

    The ZWO T2 Tilter II allows precise adjustment of your camera's imaging plane within a slim 11 mm profile, using six adjustment points to correct for sensor tilt. With a 78 mm diameter body and M42x0.75 T2 threads, this adapter integrates directly into ZWO imaging trains, most notably for eliminating Newton's rings during H-alpha solar imaging.

    Correcting Sensor Tilt with 6 Adjustment Points

    If you notice elongated stars in the corners of your images, the cause is often a slight tilt in the sensor plane relative to your telescope's focal plane. The T2 Tilter II addresses this mechanically, with six push/pull adjustment nuts that allow you to make minute changes to the camera's angle until the entire field is perfectly orthogonal to the light path, resulting in sharp, round stars across the full frame.

    Eliminating Newton's Rings from H-Alpha Solar Images

    The primary function of the T2 Tilter II is to solve the problem of Newton's rings, an interference pattern that commonly appears in monochromatic solar imaging. By introducing a very slight, controlled tilt to the camera sensor, you can shift the parallel surfaces out of alignment just enough to cancel out this pattern, leaving you with a clean, high-contrast image of the Sun's chromosphere without post-processing artifacts.

    T2 Tilter II vs. Original T2 Tilter

    While the original T2 Tilter provided the same core tilt-correction function, the T2 Tilter II improves its system integration. The key upgrade is the addition of multiple screw holes on the adapter body, which allow for a direct, secure connection to ZWO's 2" Electronic Filter Wheels (EFW). This creates a more rigid imaging train, reducing the potential for flexure that can be introduced by threaded adapters alone.

    • Original T2 Tilter: Provided fundamental tilt adjustment via threaded connections.
    • T2 Tilter II: Adds direct-mount compatibility with 2" ZWO EFWs for a more robust mechanical connection, while retaining the same 11 mm thickness.

    Mechanical Integration with M42 Threads & 11 mm Profile

    The adapter maintains a minimal optical path length, consuming only 11 mm of back focus. Both sides feature standard M42x0.75 T2 threads for universal compatibility with most astronomy cameras, filter wheels, and off-axis guiders. For specific ZWO cameras with shorter back focus requirements, an included T2-T2 adapter ensures correct spacing and connection.

    • Direct Connection: Cameras like the ASI294, ASI1600, and ASI533 attach directly to the tilter body.
    • Adapter Required: Uncooled cameras like the ASI178, ASI290, and ASI120 must use the included T2-T2 adapter before connecting to the tilter.
    • Incompatible Models: This tilter is not suitable for large-format cameras like the ASI071, ASI2600, and ASI6200.

  • What is the primary purpose of the ZWO T2 Tilter II?

    The ZWO T2 Tilter II has two main functions. Its primary application is to eliminate Newton's rings in H-alpha solar imaging by introducing a slight, controlled tilt to the camera sensor. Its secondary function is to correct for sensor tilt in any astrophotography setup, ensuring stars are sharp across the entire field of view.

    How does the ZWO T2 Tilter II help when imaging the Sun in H-alpha?

    When imaging the Sun with a monochrome camera and a narrow H-alpha filter, reflections between the parallel surfaces of the sensor and filter can create an interference pattern called Newton's rings. The ZWO T2 Tilter II allows you to angle the camera sensor just enough to break this parallel alignment, causing the interference pattern to disappear from your final image.

    My stars are elongated in the corners with my ASI1600MM on my f/4 Newtonian. Can the ZWO T2 Tilter II fix this?

    Yes, this is a classic sign of sensor tilt, which is especially noticeable in fast optical systems like an f/4 Newtonian. The ZWO T2 Tilter II is designed to correct this. By carefully adjusting the six push/pull screws, you can align the ASI1600's sensor plane perfectly with your telescope's focal plane, which should make the stars in the corners round and sharp.

    What is the main difference between the ZWO T2 Tilter II and the original version?

    The main upgrade in the T2 Tilter II is its improved mechanical compatibility. The new version adds multiple screw holes that allow it to be bolted directly to ZWO's 2" Electronic Filter Wheels (EFW). This creates a more rigid and reliable connection compared to relying on T2 threads alone.

    Which ZWO cameras are incompatible with the ZWO T2 Tilter II?

    The ZWO T2 Tilter II is not recommended for use with ZWO's larger format cameras due to their size, weight, and potential for vignetting. The specifically incompatible models are the ASI071, ASI2600, and ASI6200.

    Do I need the included T2-T2 adapter for my ASI294MC Pro with the ZWO T2 Tilter II?

    No, you do not. According to ZWO's connection guide, cameras like the ASI294, ASI1600, and ASI183 (both cooled and uncooled versions) connect directly to the main body of the T2 Tilter II without needing the included T2-T2 adapter.

  • SKU ZWO-T2-TILTER-II
    Threads M42x0.75 T2 (Female/Male)
    Thickness 11 mm
    Diameter 78 mm
    Adjustment 6 Push/Pull Points

    • ZWO T2 Tilter II Adapter Body

      × 1

    • T2-T2 Adapter

      × 1

    • Hex Wrench

      × 1

  • ZWO 2-Year Warranty