This is a 72 mm, f/5.8, Doublet Refracting Telescope with a 2-inch Dual Speed Crayford Focuser.
Sky-Watcher Evostar refractors provide the finest images obtainable in their design class. These doublet refractors deliver dramatic, coal-black skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none. These refractors are the logical choice for the discriminating amateur astronomer looking for an investment in advanced instrumentation for exceptional viewing and astrophotography.
Includes: Tube-ring Attachment hardware with V-Style dovetail plate and an Aluminum case.
The OTA length is 16.5-inches (419.1 mm)
The OTA Outer Diameter is 3.5-inches (88.9 mm.)
Lens Glass: Matched lens assembly with one ED element, (two elements total.)