LX200 EAF Focuser Holder

Parametric EAF Focuser Holder for LX200 Classic. This is a no belt direct focuser. (I found the belt versions to slip and loose focus)

Included stl's are for an LX200 Classic 10". To customize the design, use OpenScad.

Required:

• Replacement bolts for focuser washer: 6-32x11mm (3 required)

• Hardware for coupler: Bolt: M2.5 x 7mm Nut: M2.5 (2 of each required)

• ZWO EAF Focuser

• Aluminum Coupler that comes with the focuser

• Scotch Extremely Strong Mounting Tape

• Rubbing Alcohol or Isopropanol/Isopropyl Alchohol

Assembly:

• Assemble printed coupler (insert nuts and bolts)

• Place aluminum coupler (the largest one that came with the EAF Focuser) on the EAF Focuser

• Put tape on bottom of holder, keep focuser washer area clear

• Place OTA horizontally and tighten clutch (to prevent the mirror shifting under gravity to make it easier)

• Remove the 3 bolts holding the focuser washer

• Clean area around the washer with Rubbing Alcohol/Isopropanol and let dry

• Insert printed coupler inside the holder cage in the correct orientation

• Apply holder and bolt down with the replacement bolts. 3 bolts + tape hold it in place. Orient such that the flange on the top plate points upwards.

• Tighten coupler to focuser knob

• Bolt EAF to holder with the 2 bolts that came with the EAF

• Tighten aluminmum coupler to printed coupler

If you have problems with the EAF stopping prematurely due to not enough torque, focuser may be too tight, remove the focuser, undo the 2 set screws on it, and turn the brass wash a small amount CCW and tighten up the screws and replace. My focuser has always been hard to turn since it came from the factory.

-