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night vision and most optical device
Focus by turning the eyepiece
The Moon: crisp crater and rille detail at high magnification
Continuous working time
Long Perng 1.25" 9mm Long Eye Relief Eyepiece Narrowband Imaging night vision and most opticalLong Perng introduce its 1,25" Long Eye Relief Eyepieces Long Eye Relief Eyepieces Model Number: DCS 9mm Focal Length: 9mm Eye Relief: 20mm Barrel Size: 1. 25 inches Field of View: 55 degrees Lens Construction: 7 elements in 4 groups Material: Aluminium Coating: Fully multi coated
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