The SVBONY SV48P is a 102mm f/6.5 achromatic refractor with fully multi-coated optics; a 2.5-inch dual-speed focuser and a 360-degree rotatable design; weighing just 7 lbs, it’s a great option for wide-field astrophotography; especially with a field flattener f/6.5 short focal ratio; larger field of view; can collect more light; the image is brighter; and the observation target is clearer and easier to observe; very useful for taking wide-angle celestial photos Dual-speed focusing; fast focus allows you to quickly move the focus wheel to roughly focus on your target; while slow focus adjusts focus more finely for optimal image clarity; product does not include field rotator, good astronomical observations can be achieved by choosing the right eyepiece; effective tracking, and post-processing Combinations; the refractor telescope can be used with SV705CC planetary camera to assist photography; and can be used with SV231 chromatic aberration correction filters to control chromatic aberration levels Fully multi-coated lens; uses superior optics to provide clear and realistic views; designed with fully multi-layer coating; more realistic colours for maximum eye protection AR anti-reflective coating; it can reduce reflection and increase transmittance; improving the brightness; clarity and contrast of images; thereby providing a better visual experience Integral hoopd; the tube rings make the telescope more stable and avoid wobbling; and provide a stable support to keep the optical components of the telescope stable relative to each other Objective lens cleanliness; dust on the objective lens will cause reflection of light; thereby reducing transmittance; maintaining cleanliness minimizes these interferences and improves the brightness and clarity of the image Easy to assemble and use; the telescope is designed to be user-friendly; it can be set up quickly without additional tools; you can find a lot of fun in assembling Widely used; the refractor telescope can be used in multiple scenarios; such as observinging the moon; nebulae; celestial bodies; etc; the excellent optical performance of the telescope can produce clear images SVBONY SV48P 102mm f/6.5 Refractor Telescope 2.5inch RAP Double Speed Focuser w/Dovetail Mounting Plate with Tube Rings The SV48P 102mm f/6.5 Astronomical Telescope has outstanding optics, high-quality mechanical components. Fitted with achromatic glass for good edge-to-edge viewing, fully multi green coated lens maximize light transmission eliminating false color. The 2.5inch Double speed focuser, for smooth operation, great feel and precise adjustability. This is a good telescope provides for astrophotography visual observers or nature watchers. The SVBONY SV48P 102mm Telescope OTA Product does not include field rotator, good astronomical observations can be achieved by choosing the right eyepiece, effective tracking, and post-processing.