Accessory · MSRP $86
Astro-Physics Step-Down Adapter, 2.7" Male Threads to 42 mm Male Threads (ADA27-42)
Key specifications
| Accessory type | Adapter |
|---|---|
| Path length | 5.1 mm |
All specifications
| Interface | 2.7" male thread at front; 42 mm male thread at rear |
|---|---|
| Compatible with | AP 2.7" extensions (EXT27-) and spacer rings; cameras and filter wheels with 42 mm (T) threads |
About
A step-down adapter from the 2.7-inch thread of an Astro-Physics extension to a camera or filter wheel's 42 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.