astro.n-minus

Accessory · MSRP $86

Astro-Physics Step-Down Adapter, 2.7" Male Threads to 48 mm Male Threads (ADA27-48)

Key specifications

Accessory typeAdapter
Path length5.1 mm

All specifications

Interface2.7" male thread at front; 48 mm male thread at rear
Compatible withAP 2.7" extensions (EXT27-) and spacer rings; cameras and filter wheels with 48 mm threads

About

A step-down adapter from the 2.7-inch thread of an Astro-Physics extension to a camera or filter wheel's 48 mm thread, part of a series meant to hold the imaging train at the largest diameter possible until just before the camera — for strength, less flexure and less vignetting.