Helical Focuser

Quick Overview Precision helical microfocuser for use with an off-axis guider (sold separately) to focus image in a 1.25” guide camera (sold separately) during astrophotography Integrated 1.25” holder with compression ring for holding guide 1.25” camera; external male T2 (M42x0.75) thread on camera side and female T2 (M42x0.75) thread on opposite side Does not rotate during focusing; Includes adjustment range of 6mm and includes a scale for reproducible focus; Adjustment accuracy 0.1mm; Focus position can be locked with a knurled locking screw Minimum height 48.5mm