Dark Clear Skies M54M to M42M Back Focus Spacer – 2mm wide field telescope EMH150 Pier Extension

EMH150 Pier Extension

perfect for securely attaching the ZWO Seestar

Simply attach this adapter to your camera the same way as you attach a lens then screw your T2 lens or accessory into the adapter

this adapter is commonly used in advanced astrophotography setups involving reducers

Dark Clear Skies M54M to M42M Back Focus Spacer – 2mm wide field telescope EMH150 Pier ExtensionThe Dark Clear Skies M54M to M42M Fine Back Focus Spacer (2 mm) is a precision machined spacer designed for accurate fine adjustment of back focus distance in astrophotography imaging trains. Purpose & Use Many telescope reducers and field flatteners require very precise back focus spacing to deliver optimal star shapes and edge correction. Small spacing errors of just a few millimetres can noticeably affect image quality, particularly when using fast