ApprenticeAstronomer Posted May 13, 2012 Share Posted May 13, 2012 Hi all,How do you know when a Barlow is of good quality? I've been thinking of purchasing one as the one that came with my scope is no good; all am seeing with it is a blurry mass of light. Your help would be greatly appreciated. Link to comment Share on other sites More sharing options...
Tinker1947 Posted May 13, 2012 Share Posted May 13, 2012 The Tal type are well spoken of.....http://www.firstlightoptics.com/tal-eyepieces/tal-2x-and-3x-barlows.html Link to comment Share on other sites More sharing options...
Hitesh Posted May 13, 2012 Share Posted May 13, 2012 I agree the Tal Barlow is really good especially for the price Link to comment Share on other sites More sharing options...
ApprenticeAstronomer Posted May 13, 2012 Author Share Posted May 13, 2012 how do you know that they are a good quality Barlow? Is there something different about design or something? Link to comment Share on other sites More sharing options...
gurneyfan67 Posted May 13, 2012 Share Posted May 13, 2012 A good quality Barlow will increase mag without darkening the image significantly. Also the coatings on the lens will not introduce any false color such as when viewing a bright object like a full Moon or bright planet. Link to comment Share on other sites More sharing options...
AndyH Posted May 13, 2012 Share Posted May 13, 2012 I was multitasking and brousing sgl and Tal's factory page when i read this thread. Maybe this'll be of interest?Copied and pasted from Tal's factory page(npzoptics.com). Cleaned up the translation slightly.......Barlow Achromatic Barlow composed of cemented doublet. A 2x, 3x and 4x are available. The most popular barlow, the x2 (pictured - right), is included as a standard accessory with TAL telescopes and has a higher optical performance through the use of special lanthanum glass. The x2 barlow can be transformed to a x3 with the addition of a spacing sleeve, placed between the barlow and eyepiece. Andy Link to comment Share on other sites More sharing options...
nightfisher Posted May 13, 2012 Share Posted May 13, 2012 If you can get one the Tal x2 barlow is highly thought of Link to comment Share on other sites More sharing options...
Orange Haze Posted May 13, 2012 Share Posted May 13, 2012 Another vote here for the Tal x2. I have one and have been very impressed with the clarity of images through it. Been great on Saturn & Venus and for the price you can't really go wrong. Link to comment Share on other sites More sharing options...
Naemeth Posted May 13, 2012 Share Posted May 13, 2012 +1 for the TAL, it's always out-of-stock, so that should give you an idea on just how popular it is. Link to comment Share on other sites More sharing options...
Marki Posted May 13, 2012 Share Posted May 13, 2012 Another vote for the Tal x2 if you can get one, nice and clear image. I think it is better quality relatively than the Tal x3 barlow (at least to my tired old eyes ). Link to comment Share on other sites More sharing options...
mike.brightmore Posted May 13, 2012 Share Posted May 13, 2012 Even a mediocre Barlow should give you an image. It does sound as if you are not getting it in focus. Link to comment Share on other sites More sharing options...
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