It has an aperture of 100mm and the focal ratio is f/5.5. Z4 is a sextuplet astrograph with three pieces of lens at the front and three pieces at the back, and two of them are ED glasses. You can just make the target stay at the focus, and the optical system is perfect for imaging.
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The adapter required to attach the f/3.9 reducer to the FRA500 scope is included with this scope as a standard accessory. ASKAR FRA500 Quintuplet refractor with 90mm aperture and f/5.6 focal ratio, ideal for wide-field deep sky imaging.
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A SQA106 OTA, an Oxford cloth case. SQA106 Electronic Focuser Assembly Diagram. Quintuplet petzval APO（including two pieces of SD glass）. Gross weight（including tube ring and dovetail plate）. Rear-end connection distance.
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The back focus of FRA400 is 140mm, starting from the base of mounting thread on the housing to the focal plane. And users don't need to worry about the calculation of back focus when using FRA400, as long as the object in the objective lens is focused.
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Celestron AstroMaster 130EQ-MD (Motor Drive) Telescope As pictured Inherited from a recently passed relative, assumed all items present. Any questions please ask Minimally used
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(Apart from the focuser the rest of the scope is actually really well built :).
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TELESCOPE FIELD OF VISION NEW Monocular Telescope - Field Of Vision Is Infinite And Wonderful. Monocular, 16x52 Monocular Telescope, Monoculars for Adults with Smartphone Holder & Tripod, Compact Monocular for Hiking Camping Bird Watching.
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Edu-Science ensures a quality viewing experience with its 40 mm aperture, providing clear and detailed images of distant objects.
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