I have an ultra low-profile helical focuser for sale. Fully racked in it is only 20mm from base to eyepiece - perfect for a highly optimized newtonian where you want maximum illumination. Accepts 2" eyepieces or 1.25" with an equally low-profile adapter.
$50 shipped.
Last edited by PhilW; 23-02-2020 at 06:21 PM.
Reason: sold