Barlows
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Pan-Barlow Interface Accessory

You can double the power of any eyepiece with the 2x Big Barlow, but adding the interface lens brings the pupil back to original position when used with long focal length eyepieces such as the Panoptic 41, 35, or 27mm 2" models. The combination of interface and Big Barlow mimics the Powermate concept.

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