The internal standard features a 60-degree guide star slot designed to accept a variety of accessories. It can be equipped with guide star mirrors, guide star boxes, and search mirrors. Key benefits - Provides a precise and repeatable reference for alignment via the 60-degree slot - Flexible configuration with compatible accessories to meet different tasks - Supports quick changes between accessories, reducing setup time and downtime - Maintains consistency with other guide star components in the system Compatibility and accessories - Accessory options: guide star mirrors, guide star boxes, search mirrors - Slot geometry: 60-degree internal standard design for straightforward integration Specifications and attributes - Slot angle: 60 degrees - Internal standard configuration - Accessory compatibility: guide star mirrors, guide star boxes, search mirrors Use scenarios - Laboratory alignment workflow: attach guide star mirrors to achieve precise, repeatable alignment references during instrument setup - Calibration and testing: use guide star boxes to simulate star fields for verification of alignment procedures - Field or on-site adjustments: swap to different search mirrors as needed to accommodate varying alignment conditions or targets This description preserves the core function of the product while clearly outlining its benefits, compatibility, and practical applications in a concise, professional format.