Size and thread of screws on bottom of focuser
Two silver hex screws to hold the focuser down:
m4 x 0.7tpi
Central Phillips locking screw: m8 x 0.75tpi
Far left and far right hex screws: m4 x 0.7tpi
Hex key needed: 2mm
Recommended mounting hole to attach
motorized focuser: m4 x 0.7tpi
Size and thread of tension knobs on top of focuser
Blue tension knob pitch: m8 x 0.75tpi
Hex tension screw: m4 x 0.7tpi
Hex key needed for tension knob: 2mm
Thumb screw thread pitch: m4 x 0.7tpi
Screws securing finder shoe
Screw size: m4 x 0.7tpi
Hex size for original screw: 2.5mm
Spacing between mounting holes: 20mm
Finder shoe requirements
Synta Style finder shoe with vertical and horizontal
mounting holes
Apertura finder shoe recommended
The focuser on the Apertura 60EDR is a dual speed (10:1) focuser with a fine tune
adjustment knob for precise manual focus. The focuser can be easily disassembled to
accommodate the ZWO Electronic Auto Focuser as well as other motorized focusers.
FOCUSER
Focuser mechanism: 10:1 coarse and fine
adjustment
