🔭 Optical Specifications
Focal Length: 105 mm
Focal Ratio (Aperture): f/2.8 (fixed)
Optical Design: 7 elements in 5 groups, including ED (Extra-low Dispersion) glass.
Lens Coatings: Fully Multi-Coated (FMC) to reduce reflections and boost contrast.
⚖️Mechanical & Physical Specs
Weight: Approximately 482 grams
Back Focus / Flange Distance: 24 mm
Focuser: Integrated smooth manual helical focuser
Rear Connection: M42 × 0.75 male thread
Filter Thread: Front M48 × 0.75 thread for standard 2-inch astronomical filters
Mounting Base: Dual-compatible with Vixen-style dovetails and Arca-Swiss mounting plates.
