Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides

Alstar Astronomical 2 inch M48-extension Tube Kit for Cameras and eyepieces - Length 5mm 10mm 20mm 30mm - M48x0.75 on Both Sides

Improve Focusing Problem: The extension tube has a M48x0.75 interior thread and a M48x0.75 exterior thread; elegantly solves the spacing problems in astrophotography and improve a series of focusing problems Variable Combination: The required spacing can be achieved by combining several extenders of differing lengths; Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners Aluminium Alloy Material: All metal construction and anodizing aluminium process; resistant for long time use Eliminate Extra Light: The design of the internal thread can eliminate stray light and reflected light; making the image clearer and perfect 100 Percent Satisfaction: If you have any question with our product; please contact us freely 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 M48*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.