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Amazon.com : Astromania 1.25" 3X Short Focus Barlow Lens for Telescope Eyepiece - Superior Sharpness and Color Correction : Electronics
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Made a DIY 2 inch barlow lens after finding out u can't focus a dslr using a dobsonian : r/astrophotography
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Eyepiece projection or barlow when using DSLR for EAA? - Electronically Assisted Astronomy (EAA) - Cloudy Nights
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Amazon.com : SVBONY Barlow Lens 2X 1.25 inch Metal Fully Blackened Telescope Accessory with M42x0.75 Thread Camera Connect Interface for Telescope Filters for Astrophotography : Electronics
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