The Zero Image-Shift Microfocuser by Meade:
Now you can obtain the most precise image focus possible...truly to a microscopic level...during visual and astrophotographic applications, and, during CCD applications, simultaneously maintain precise image concentration on even the smallest CCD chips. The Meade Zero Image-Shift Microfocuser operates at 4 different speeds from extremely slow to fast; the entire microfocusing operation is actuated through the AutoStar II handbox. Coarse manual focusing is effected through the telescope's manual focus knob.
OPT Product Number: ME-07080