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TAL 24mm UWA 2” 92 degree AFOV eyepiece
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TAL 24mm UWA is a high-quality eyepiece for low-power wide-angle scanning of the sky with emphasis on large open clusters such as Beehive, Pleiades, Hiades, Alpha Perseus.
TAL 24mm UWA is a compact 2” eyepiece with a straight, fairly narrow body and sloping top. The barrel is straight and well-blackened inside. The eyepiece is an 8 element fully multi-coated modern design. The manufacturer rates it at 80 degree apparent field of view and 12mm eye relief. It measures at about 92 degree apparent field of view, making it the largest AFOV eyepiece in current production. The mechanical build quality is adequate but not great – I rate it a notch below the lower priced BW-Optik 30mm 80 degree eyepiece. My sample had a very small chip at the edge of the housing that forms the opening for the top lens element. The first surface of the field lens is close to the focal plane, making TAL UWA sensitive to surface dust (this is only apparent in critical daylight viewing). The eyepiece weighs about 1 pound and focuses just a little further out than the BW-Optik. It has no eyeguard and comes with both end caps. The eyepiece is made in Siberia, Russia and is supposed to be the first of a three UWA series: 24mm, 20mm, 15mm. The eyepiece was evaluated with a Stellarvue Nighthawk (current production F:6), equipped with Williams Optics enhanced aluminum 2” diagonal. The author has no interest in the maker or distributor of the reviewed eyepiece.