The S7909 2-inch to M48 interface is suitable for full frame cameras Shortcomings

The S7909 Upgraded version with matte paint

 2-inch to M48 interface is suitable for full frame cameras Shortcomings

M48*0.75-5mm
Extension: 2mm
2-inch bucket length: 34mm
Bull telescope short distance camera or CCD
Connection method of light damage filter close to CCD