Customer comments and photos

 Dobsonian Mounts

Read: About Our Mounts
Standard solid
Custom solid.
Custom collapsible.

Manual setting circles: Az and Dec.
Digital setting circle installation.
Mounts for two telescopes.
Height adjustment stands

Image Sharpening

Primary:Fix Turned Down Edge. 
Imaging: Remove mirror clip flare.
Aperture: Eliminate spider spikes.

Clamshell & Rotating Rings

For Dobsonian mounts
For Equatorial mounts

Altitude Bearings 

Friction control capture with Incised bearing channel.

Undersized bearings cause balance problems.

Altitude bearings on a telescope are the equivalent to a balance pole for tightrope walkers. Poles spread the walker's balance out over a greater width. Too short a width (a short or no extending pole) - there is no balancing on the "tightrope". Imagine getting pushed with your feet next to each other, you are very unstable. Larger altitude bearings spread the footing "stance" and weight, widening your telescope tube's balance. Larger altitude bearings also provide finer incremental movement, each degree being wider.


12" Big Bearings.

Under-balanced factory bearings.

Big Bearings
Upgrade from undersized to 12".

Many mass manufactured Dobsonian telescopes use 5" to 5-1/2" altitude bearings, with inherent balance problems. 12" Big Bearings improve balance, motion, and add a friction/lock mechanism.

Big Bearings are designed to attach directly onto your tube's small bearings. We customize Big Bearings bolt holes to match your existing bolt pattern. Big Bearing fit flat onto existing bearings

Small Bearing Internally Mounted

Carry handles are built in.

Small 12" Bearing

Standard 18" bearings

Standard Bearings
Small (12") and Large (18").

Standard small 12" and large 18" altitude bearings have incised channels for fine tuning guides. Bearing designs have cutouts for easy lifting and carrying of your telescope. Custom cut Inside braces precisely match your telescope tube outside diameter. Choose among these options:

  • 3/8" center bolt hole for attaching to tube.
  • Holes to mount to your existing tube ring set.
  • No mounting holes (drill your own).
  • Can attach inside mount side-walls.
  • Can attach outside mount side-walls.
  • Curved bearing braces with matching bearing holes.
  • Fine tuning friction guides and incised bearing channels.
  • Other custom sizes upon request.

What you get (depending on what item you order): all parts included. Bearings, supports, support screws, teflon, laminate strips, fine tuning assembly.

What you need: Glue for laminate (contact cement), Philips screwdrivers (#12 and #4) and longer attachment bolts if necessary.


Big Bearings - drop in upgrades
BBK Big Bearings Kit
BBF Big Bearings Finished
Standard Bearings
SBK Small Bearings (12") Kit
SBSK Small Bearings with Supports Kit
SBF Small Bearings Finished
SBSF Small Bearings with Supports Finished
LBK Large Bearings (18") Kit
LBSK Large Bearings with Supports Kit
LBF Large Bearings Finished
LBSF Large Bearings with Supports Finished


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