Fully metal construction and anodizing aluminum process, for long time use Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners The extension tube has a T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems Type: Astronomical T2 thread Extension Tube Male thread: M42*0.75mm
Fully metal construction and anodizing aluminum process, for long time use Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners The extension tube has a T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems Type: Astronomical T2 thread Extension Tube Male thread: M42*0.75mm
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