Amazon.com : Solomark 1.25" 2X Barlow Lens Metal with M42x0.75 Thread Camera Interface for Telescopes : Electronics
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![Use a Barlow - Astronomy Hacks [Book]](https://www.oreilly.com/api/v2/epubs/0596100604/files/httpatomoreillycomsourceoreillyimages2178119.png.jpg "Use a Barlow - Astronomy Hacks [Book]")
Use a Barlow - Astronomy Hacks [Book]
Using Barlow lenses with your telescope (A buyer's guide) - YouTube
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Barlow Lens - Complete Overview and Function - YouTube
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Amazon.com : Astromania 2" 2.5X Barlow Lens - Allows The use of Both 2" and 1.25" eyepieces : Electronics
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BL004 1.25'' 3x Barlow Lens | Saxon Optics
Barlow lenses, their magnification factors and working distances / Baader Planetarium Blog Posts
