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
T ring for Minolta AF SLR/DSLR: Compatible with Minolta SLR and DSLR Camera with AF Bayonet (Please Attention) for connecting camera to telescope for professional astrophotography; Equipped with one hex wrench that achieve camera's easy angle adjustment
Quick & Convenient Installation: Just clockwise tighten T2/T ring to Minolta AF Bayonet DSLR/SLR Camera via camera connecting thread after aligning camera lense bayonet; Other end connect to telescope accessories with M42x0.75 Male Thread like T Adapter