What is the primary use for the Starizona M42 to M48 Step Ring?

Its main purpose is to allow an accessory with M48 female threads, such as a 2" filter holder or a field flattener, to be connected to a camera, T-ring, or other component that has M42 male threads. It effectively "steps up" the thread size.

What is the purpose of the lip on this Starizona M42 to M48 adapter?

The lip acts as a physical stop. When you thread the adapter into a female port, the lip ensures it stops at a precise point, preventing it from being threaded too far in. This provides a secure connection and helps maintain consistent spacing in your imaging train.

How much length does the Starizona M42 to M48 Step Ring add to an optical train?

This is a low-profile step ring designed to add minimal length to your imaging setup.

Starizona M42 to M48 Step Ring with Lip

by Starizona

SKU STZ-STEPL-M42-M48

$19.95 USD - $19.95 USD

$19.95 USD

$19.95 USD - $19.95 USD

$19.95 USD

Price Match Policy!

Converts M42 female threads to M48 male threads
Standard M42 T-thread (inner) and M48 2" filter thread (outer) compatibility
Machined lip provides a secure, positive stop when threaded in
Low-profile design for adapting components in an imaging train

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Vignetting Calculator

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Check which filter and adapter sizes clear the sensor with the Starizona M42 to M48 Step Ring with Lip, and how much light the corners lose.

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Description
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Starizona M42 to M48 Step Ring with Lip

The Starizona M42 to M48 Step Ring with Lip is a fundamental adapter for connecting imaging components with different thread sizes. This ring is machined with internal M42 female threads and external M48 male threads, allowing you to attach accessories designed for the larger M48 standard—such as 2" filter wheels or field flatteners—to a camera or T-ring that uses M42 T-threads.

Stepping Up M42 Threads to the M48 Format

This adapter bridges the gap between the common M42 (T-thread) and M48 (2" filter thread) standards found in astrophotography. By stepping up from M42 to M48, you can create a more robust connection to accessories that require a wider physical aperture to prevent vignetting on larger camera sensors. The integrated lip provides a hard stop, preventing the adapter from threading too deeply into a component and ensuring a secure, flush fit every time.
What is the primary use for the Starizona M42 to M48 Step Ring?

Its main purpose is to allow an accessory with M48 female threads, such as a 2" filter holder or a field flattener, to be connected to a camera, T-ring, or other component that has M42 male threads. It effectively "steps up" the thread size.

What is the purpose of the lip on this Starizona M42 to M48 adapter?

The lip acts as a physical stop. When you thread the adapter into a female port, the lip ensures it stops at a precise point, preventing it from being threaded too far in. This provides a secure connection and helps maintain consistent spacing in your imaging train.

How much length does the Starizona M42 to M48 Step Ring add to an optical train?

This is a low-profile step ring designed to add minimal length to your imaging setup.
Inner Thread M42 Female

Outer Thread M48 Male
- Starizona M42 to M48 Step Ring with Lip
  
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Starizona Warranty

Starizona M42 to M48 Step Ring with Lip

Will your imaging train vignette?