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I think that I should update my earlier post about my Bosma scope. The ota is made of a cast 3mm thick alloy tube and very solid. Visually the optics are excellent. The focuser is a rack and pinion and with a 150mm drawtube travel, it makes a great telephoto lens. There is a fair bit of side movement on the drawtube, but there is a screw on top to lock the focuser in place when needed. It did come with a 50mm bosma finder scope and 12mm and 25mm bosma plossel eyepieces. I did buy it as a package from an online Chinese discount store so the mount and tripod were probably not made by the Bosma factory. I am happy with the ota, even if the mount is a bit ordinary.
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