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Barlows
TeleVue.com: Eyepiece Accessories > Barlows > Reviews
Reviews

Tele Vue's Big Barlow doubled the power but, like an optically perfect window, never gave any other indication that it was in the light path. The airy disc and surrounding diffraction rings were perfect, with no sign of astigmatism or coma. It will provide outstanding optical performance with all your eyepieces.

— Alan Dyer. Astronomy Magazine.

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