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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Baader 2" Nosepiece to T-2/M48a – with Safety-Kerf

Baader 2" Nosepiece to T-2/M48a – with Safety-Kerf

by Baader Planetarium
SKU BAA-2458130
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
Price Match Policy!
  • Connects T-2 and M48 accessories to a standard 2-inch focuser
  • Features a modern, shallow T-2 thread depth for new cameras
  • Dual male threads: T-2 (M42x0.75) and M48 (M48x0.75)
  • Baader Safety-Kerfs prevent slipping and marring of the barrel
  • Precision machined and black anodized to minimize reflections
1 in stock
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Baader 2" Nosepiece to T-2/M48a – with Safety-Kerf

    The Baader 2" Nosepiece to T-2/M48a creates a secure, universal connection for your imaging accessories on any standard 2-inch focuser. This adapter features both male T-2 and M48a threads, making it a critical component for attaching a wide range of modern cameras and filter wheels that have minimal back focus.

    A Modern 2-inch Adapter for T-2 and M48 Systems

    This nosepiece solves a fundamental connection problem by allowing you to mount accessories with either of the two most common astrophotography thread standards—T-2 (M42x0.75) and M48 (M48x0.75)—directly into a 2-inch drawtube or visual back. Its dual-thread design eliminates the need for stacking multiple adapters, resulting in a more rigid and streamlined optical train.

    Shallow T-2 Thread for Short Optical Path Cameras

    Modern astronomy cameras are often designed with extremely short optical heights to maximize back-focus flexibility. The older T-2 standard, with its deep threads, can interfere with internal components like filter sliders or sensor mechanics. Baader engineered this nosepiece with a shallower T-2 thread, ensuring full compatibility with the latest generation of cameras without risk of collision or damage.

    Secure Mounting with Baader's Safety-Kerf Design

    A common point of failure in an imaging train is an accessory slipping out of the focuser. Baader's Safety-Kerfs are machined annular grooves in the 2-inch barrel that give your focuser's compression ring or thumbscrews a secure gripping point. This design prevents the nosepiece from accidentally falling out if a screw loosens and protects the barrel from being marred by set screws, preserving its finish and fit.

  • What is the main advantage of the Baader 2" Nosepiece's shallow T-2 thread?

    The primary advantage is compatibility with modern cameras. Many new cameras have very little space inside the housing, and a traditional, deeper T-2 thread can bottom out or hit internal parts. This nosepiece's shallower thread prevents that, allowing a secure connection without interference.

    What are the "Safety-Kerfs" on this Baader T-2/M48a nosepiece?

    Safety-Kerfs are several shallow grooves machined into the 2-inch barrel. They serve two purposes: they give the thumbscrew or compression ring of your focuser a much better grip to prevent the nosepiece from slipping, and they prevent the screw from directly scratching or marring the barrel's surface.

    Can I use both the T-2 and M48 threads on the Baader 2" Nosepiece at the same time?

    No, you choose one thread standard to connect to your accessory. The adapter has both male threads available, but you will only use the one that matches your camera, filter wheel, or other T-2 or M48 threaded device.

    Will this Baader 2" nosepiece work with my ZWO ASI camera that has a short back focus?

    Yes, this nosepiece is an excellent choice for cameras like those from ZWO, QHY, and others with minimal internal clearance. Its shallow T-2 thread design is specifically intended to solve the spacing and interference issues common with these modern, compact camera bodies.

    How does the Baader Safety-Kerf prevent my imaging train from slipping in my SCT's 2-inch visual back?

    In a Schmidt-Cassegrain Telescope (SCT) visual back, which often uses thumbscrews for clamping, the Safety-Kerf gives the tip of the screw a recess to lock into. This creates a positive mechanical engagement, making it much harder for a heavy camera and filter wheel assembly to slide out, even if the screw isn't fully tightened.

    Does this Baader nosepiece add significant length to my optical train?

    This nosepiece is designed to be as low-profile as possible. While it does add some length, it is minimal. The primary purpose is to adapt the thread type to fit into a 2-inch focuser, and it is one of the most compact ways to achieve this for both T-2 and M48 standards.

  • Net weight (kg) 0.02
    Compatible Brands Astro T-2, Baader Planetarium, Celestron
    Inner Diameter / Clear Aperture (mm) 37.5 mm
    Outer Diameter 54 mm
    Type of Adapter Nosepiece, Filter holder
    Optical length (mm) 3
    Outer Connection (eyepiece/-camera-sided) M42 x 0.75 (T-2), M48
    Inner Connection (lens sided) M42 x 0.75 (T-2), M48
    Outer Connection (lens sided) ø 2" (50.8mm)
  • Baader Planetarium Warranty