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Baader Planetarium Adapter M48a to T-2a
Baader Planetarium Adapter M48a to T-2a
Baader Planetarium Adapter M48a to T-2a

Baader Planetarium Adapter M48a to T-2a

by Baader Planetarium
SKU BAA-2958554
CA$44.00 - CA$44.00
CA$44.00
CA$44.00 - CA$44.00
CA$44.00
Price Match Policy!
  • Connects M48 Female and T-2 Female Threaded Components
  • M48 Male (External) Thread on One Side
  • T-2 Male (External) Thread on the Other Side
  • Solves Common Thread Incompatibilities in Optical Trains
  • All-Metal Construction for Rigidity
2 in stock
Qualifies for FREE Shipping in Canada on orders over $500.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Adapter M48a to T-2a

    The Adapter M48a to T-2a provides a direct, male-to-male connection between the M48 (2-inch filter) thread standard and the smaller T-2 (M42) thread standard. This single component solves a common incompatibility, allowing you to link accessories with female M48 threads, like many coma correctors or field flatteners, directly to equipment with female T-2 threads, such as camera T-rings or off-axis guiders.

    Bridging 2-inch (M48) and T-mount (T-2) Systems

    Many modern optical correctors, such as field flatteners and coma correctors, terminate in a female M48 thread to support a full-frame image circle and prevent vignetting. This adapter allows you to step down from that larger M48 format to the universal T-2 thread used by the vast majority of astronomical cameras, filter wheels, and off-axis guiders, ensuring compatibility across your equipment.

    A Male-to-Male Adapter for Common Imaging Scenarios

    This adapter features external (male) threads on both the M48 and T-2 sides. It is specifically designed to join two components that both have internal (female) threads, a frequent situation when building a rigid, threaded imaging train. For example, you can securely connect the female M48 output of a reducer directly to the female T-2 input of your camera's T-ring assembly.

  • What is the primary use for the Adapter M48a to T-2a?

    Its primary use is to connect an astronomy component that has a female M48 (2-inch) thread to another component that has a female T-2 (M42) thread. It functions as a step-down adapter with male threads on both sides, creating a secure, threaded connection.

    I have a coma corrector with a female M48 thread and a ZWO camera with a female T-2 thread. Is the Adapter M48a to T-2a the right part?

    Yes, this is an ideal application for this adapter. The male M48 thread will screw into your coma corrector, and the male T-2 thread will attach to your camera's T-ring or associated spacers, creating the solid link you need for imaging.

    Does the Adapter M48a to T-2a add significant length to the optical path?

    While any adapter adds some optical length, this component is designed to be as low-profile as possible to minimize its impact on your back focus distance. It is intended as a simple thread converter, not a significant extension tube.

    Can I use the Adapter M48a to T-2a to attach my 2" field flattener to my Canon DSLR T-ring for imaging the Andromeda Galaxy (M31)?

    Yes, this is a primary use case. If your field flattener terminates in a standard female M48 thread and your Canon T-ring has the standard female T-2 thread, this adapter will bridge the two components securely for your imaging session of M31.

    What do "M48a" and "T-2a" mean in the name Adapter M48a to T-2a?

    The "a" in the name refers to the German word "außen," which means "external." This indicates that the adapter has external (male) threads on both its M48 side and its T-2 side.

    Is this adapter threaded for 2-inch filters?

    The M48 side of the adapter uses the same thread pitch as a standard 2-inch filter. However, because it is a male thread, you cannot screw a filter directly into it. It is designed to screw into a component that has female M48 threads, like the body of a field flattener or corrector.

  • Standard Manufacturer's Warranty