M54 Male to M42 Male Adapter

Name: M54 Male to M42 Male Adapter
Brand: Pegasus Astro
SKU: PEG-ADAPT-M54M-M42M
Price: 19.08 USD
Availability: InStock
Rating: 4.8 (5 reviews)

M54 Male to M42 Male Adapter - Main image

$19.08 ~~$26.88~~ In stock

Category: Astrophotography Accessories

M54 Male to M42 Male

PEG-ADAPT-M54M-M42M

Adapter Thickness: 2.0mm
Thread: Pitch 0.75mm / 6 mm length
M54 side has a M48 internal thread

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Customer Reviews (4.8 / 5 · 5 reviews)

Leo W. ★★★★★ Oct 20, 2026

The threading on the adapter is precise and clean, locking into my filter wheel without any wobble. It’s incredibly thin at 2mm, so I didn’t lose any back focus for my imaging train.

Nicholas ★★★★★ Oct 19, 2026

I was worried about back focus issues with my setup, but this adapter's 2mm thickness fits perfectly between my reducer and camera. The M54 to M42 threads engaged smoothly with no wobble.

Lily Y. ★★★★★ Oct 18, 2026

The threading is so precise on this adapter, it screws onto my flattener with zero play. The 2mm thickness is just right for keeping the back focus where I need it.