2-Inch helical focuser designed specifically for astrophotography; fits onto any 2-inch focuser
Approximately 0.1mm focusing precision with 39mm of travel; improves focusing precision; The accessory side of the focuser has a M48 thread for connecting your camera
Suitable for both refractors and Newtonian telescopes; but is also particularly useful with Schmidt Cassegrain telescopes; The rotating mechanism allows very smooth and continuous focusing; and without any play
Image erecting BAK4 prism with anti reflection coating; High accuracy and high light reflection prism; Internally matte blackened and threaded for no internal stray light reflection; 1.25 inch adapter with brass compression ring included
Entirely aluminum black anodized with smooth finish; if there is any problem of focusing due to the light path for a few telescopes; please feel free to contact us for help