Alstar M48 Extension Tube Kit for 2" Focuser of Telescope(5/8/10/20/30mm)
Product Description
Alstar M48 Extension Tube Kit for 2" Focuser of Telescope(5/8/10/20/30mm)
- The extension tube has a M48x0.75 interior thread and a M48x0.75 exterior thread for elegantly solving spacing problems in astrophotography
- The required spacing can be achieved by combining several extenders of differing lengths; you can use 1 piece; 2 pieces; 3 pieces or 4 pieces of the extension rings as you like
- Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
- Male threa: M48x0.75; Female thread: M48x0.75; Eliminates a range of focusing problems
- All metal construction and anodizing aluminium process; resistant for long time use
Technical Specifications
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