The 94EDPH is the largest telescope in the SharpStar EDPH family. Its aperture is 94mm and the focal length is 517mm, yielding a fast focal ratio is f/5.5. The 94EDPH is designed with triplet air-spaced APO lens structure, including two pieces of ED (extra-low dispersion) glass. This allows the astrograph to produce more sharp, flat images. With its compact form factor, fantastic appearance, and superb quality, the SharpStar 94EDPH is a great telescope for visual observation and sophisticated astrophotography. SharpStar 94EDPH uses the same reducer as the 76EDPH, making it easy to switch between the 76 and 94 for imaging different targets. The reducer takes the focal ratio down to a fast f/4.5, supporting full-frame imaging! This opens all kinds of options for exploring the universe. If you are looking for a large-aperture, fast-focal-ratio, quality and lightweight APO refracting telescope, the SharpStar 94EDPH is an ideal choice. Specifications Aperture 94mm Focal Length 517mm Visual Limiting Star Magnitude 11.62 Focal Ratio f/5.5 Resolution 1.28 arc seconds Objective Type Triple air-spaced APO (included two extra-low dispersion ED glass) Total Length of the Tube 468mm Main Tube Outer Diameter 118mm Weight 3.3kg