Baader Planetarium VariLock T-2 20-29mm #25Y

Baader VariLock T2 extension tube 20-29mm stepless and lockable - #2956929 - 25Y - ideal tool for setting exact focus distances. The Baader VariLock 29 is more than just a simple T2 extension. It is a complete adapter system for achieving exact focus distances: stepless adjustment from 20mm to 29mm, high rigidity due to sufficient housing wall thickness, reproducible adjustment due to lateral millimeter scale. Exact adjustment of focus distances for sun filters, image field correctors. Reproducible results when adapting adapters with different overall lengths due to millimeter scale. Connection on the telescope side: T2 (M42x0.75mm) internal thread Connection on the eyepiece/camera side: T2 external thread and ring dovetail for Baader bayonet adapter Data of ring dovetail: Diameter 52mm / Thickness 6.5mm Optical length: 20-29mm stepless - adjustable via millimeter scale.