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It seems I can't focus using a 2x Barlow lens, I tried using a 20mm, 15mm, 10mm eyepieces but all I can see is the spider through my eyepiece when I adjust the focuser. Any tips or tricks or any advice will be appreciated. I have a celestron Astromaster 130EQ

Edited by FeCr2O4

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How is it without using the Barlow? And what brand of Barlow do you have? Cheap Barlows can be problematic, but I'm sure with enough information - we'll be able to find the problem.

More information, please.

Dave

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I too struggle with the focus on a x2 Barlow. I have the standard one that comes with the Skywatcher 4" refractor.

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Hello and a warm welcome to the SGL. We need a little more information. Which scope do you have for instance ?

Edited by laudropb

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I had this problem on my SW 80ED with a 2X Barlow, i have to thread a 50mm extension tube onto the front of the Barlow before inserting it in the focuser.

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