Fine Focuser Telescope 4:1 reducer for r&p 1.25"
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Description
Description
Fine focuser add-on for standard Celestron rack and pinion focuser
Provides 4:1 reduction for fine control on the focuser
Easily reversible, no permanent changes, take it off if you dont like it
Takes up one side, leaving the other side knob as is for coarse control
Thoroughly tested
Why I made this
We got a new telescope (Celestron with a standard 1.25" rack and pinion focuser) and the focuser was super jumpy.
I first removed the insane gummy grease in the rack and pinion and put some decent grease. Was still unhappy, looked at getting a 10:1 focuser, but that would be more than 50% of the cost of the telescope
This is a retrofit, which doesnt even need additional screws
Parts and Assembly
- Drive Gear - snap on to the knob on one side of the existing focuser
- Hub - remove the two screws holding down the current focuser gear and reinsert through the holes in the hub
- Pinion Gear - Through the hub and mesh with the drive gear
- Turn Knob - Attach it to the free end of the pinion gear
Printing
Basic PLA, 20% infill, no supports, super quick
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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