Male thread - M42X0.75; Female thread - M42X0.75; eliminates a range of focusing problems
The extension tube has a T2 interior thread and a T2 exterior thread for elegantly solving spacing problems in astrophotography.
Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
Versatile T2 Interface Conversion: This filter drawer acts as a T2 male to T2 female adapter for telescope accessories; providing seamless connectivity to various astronomical equipment with stable & reliable compatibility for better astronomy experience
Flexible Filter Size Switching: With an internal 2-inch to 1.25-inch adapter to allow effortless switching between 1.25-inch and 2-inch filters (supporting filter thickness up to 12mm); making it quick & convenient to adapt different observation scenarios
Description
Sometimes you cannot get to the right focal plane for focusing with a camera or eyepiece. This extension tube kit solves this problem. You can use this extender with any camera or eyepiece or with various adapters. The M42*0.75 threads on both ends make it extremely versatile. Use this extender for obtaining the correct image scale or for the exact spacing required for a reducer or field flattener. You can reach the extension length required by combining several extenders of different lengths.