Apertura 3x 1.25" ED Barlow (A-3XB1)
Accessory

Apertura 3x 1.25" ED Barlow (A-3XB1)

highpointscientific.com/.../apertura-3x-barlow-lens-with-ed-glass-125-inch-barrel-3xb1
TypeFocal modifier / field corrector
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