Datyson 1.25" 2x Barlow Lens Fully Multi Coated Metal with M42x0.75 Thread Camera Connect Interface for Telescope Eyepieces|lens 2x|lens for cameralens for telescope - AliExpress
Amazon.com : 1.25 Inch 2X Barlow Lens, Barlow Lens for Astronomy Telescope Monocular Eyepiece 31.7mm : Electronics
Meade 1.25" Short Focus 2X Barlow Lens
3x Barlow Lens Plastic For 1.25" Standard Astronomical Telescope Eyepiece Ocular Short Focus - Lenses - AliExpress
Astro Essentials 1.25" 2x Barlow with T thread | First Light Optics
SkyWatcher 2x 31.8 mm Barlow lens with T2 thread | Skypoint
Help with telescope. 10” Skywatcher Dobsonian. Using a 2x Barlow lens with either a 10mm or 25mm. I've even tried using the extender. My results are why you see in the pic,
Astro Blog Delta « Barlow shootout: Skywatcher, Celestron, High Point, TeleVue Powermate and more «
Sky-Watcher 2" ED Deluxe Barlow Lens Grovers Optics