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Posts Made By: Walter Dent

December 5, 2003 02:24 PM Forum: Equipment Talk

Powermate v. Barlow

Posted By Walter Dent

The powermate is not a barlow, it is telecentric, meaning that it does not move the eye relief position nor reduce the field stop of plossl eyepieces. It only amplifies the image size. An ordinary barlow will increase the eye relief of an eyepiece, which may be good (8mm TV plossl) or bad (32 TV plossl).