40mm Metal Telescope Eyepiece 1.25 Inch Astronomical Eyepiece with Precision Focus Control

Precision metal eyepiece available in multiple options for flexible optical setups. Durable metal construction and a detached focus design deliver stable performance and long service life. Key benefits Flexible magnification and field options: choose from 4mm, 6mm, 9mm, 12mm, 15mm, 32mm, 40mm, or 2X to match observing goals and instrument specifications. Durable metal build: quality materials resist wear and maintain consistent alignment for reliable use over time. Detached focus type: allows fine focusing adjustments and straightforward integration with compatible focusing mechanisms. Simple swap for different viewing needs: change eyepieces to alter magnification and field of view without modifying the main instrument. What makes this eyepiece practical Consistent specification across components: objective lens diameter, magnification, field of view, and eyepiece diameter are offered in the same selectable options: 4mm, 6mm, 9mm, 12mm, 15mm, 32mm, 40mm, and 2X. Metal construction provides mechanical stability and repeatable positioning when changing eyepieces. Detached focus design supports precise focusing for improved clarity during observation. Specifications Color: 40mm Type: Eyepiece Material: Metal Focus Type: Detached Objective Lens Diameter options: 4mm, 6mm, 9mm, 12mm, 15mm, 32mm, 40mm, 2X Magnification options: 4mm, 6mm, 9mm, 12mm, 15mm, 32mm, 40mm, 2X Field of View options: 4mm, 6mm, 9mm, 12mm, 15mm, 32mm, 40mm, 2X Eyepiece Diameter options: 4mm, 6mm, 9mm, 12mm, 15mm, 32mm, 40mm, 2X Typical applications Amateur astronomy: switch eyepieces to adapt to planetary, lunar, and deep sky viewing requirements. Outdoor spotting and observation: fit to compatible spotting scopes for birding and long distance terrestrial viewing. Educational and laboratory use: flexible eyepiece options support demonstrations and handson optics experiments. Why choose this eyepiece Offers a range of size and magnification options to match various instruments and observing goals. Metal construction and detached focus type support durability and precise control. Straightforward compatibility with optical systems that accept standard eyepieces and detached focus mechanisms. Contains the specified sizes and features for reliable, long term use in compatible optical setups.