• GEM tube rotating rings
  • Primary mirror masks
  • Standard mount and altitude bearings kit.
  • Custom mounts designed to your specs.
  • Two telescopes with one mount?
  • Maks and SCT and Newts (oh my!).
  • Tripod adapt a small Grab-and-Go Dob.
  • Digital setting circles.
  • Small bearings transformed to 12 inch!
  • Small bearings fitted securely to your tube.
  • Large bearings for mirror box or big tubes.
  • Bearing supports.
  • Bearings for existing Newtonian tube rings.

Clamshell Rings

  • Newtonian mounting on an equatorial head.
  • Building a mount? Add rings and bearings.
  • Lightweight rings for smaller telescopes.
  • 6" low cost optimized.
  • 8" - 12.5" mirror optimized 6 point flotation.
  • Universal for conical or standard mirrors.

Streetlight Baffles

  • Eliminate light around your focuser.
  • Altitude and Azimuth Bearing Materials.
  • Aluminum tubes.
  • Tube end rings.
  • FRP azimuth disks and rings.

ATM Parts
E-Mail for shipping estimates
Azimuth Bearing Rings Cut To Size: Formica laminate Crystal 42

(1) Maximum outside diameter range:
(2) Actual outside diameter:
(3) Inside diameter (max is outside diameter minus 2 inches).

Altitude Bearing 48" Strips: Formica laminate Crystal 42
Shipping to continental USA included in price.


Virgin Teflon Pads

Three sizes of pads available:

0.75"x1.00", 1.00"x1.00" altitude pads, 1.25"x1.25" azimuth pads. All are predrilled and countersunk with #6 flathead scews included.

When you order an Azimuth Bearing Ring and 1.25"x1.25" teflon azimuth pads, we will size the teflon pad width to your ordered azimuth ring width.

Shipping to continental USA included in price.



Aluminum Tubes

Tubes are cut to your specified length. Minimum order $50. Pricing is to the next foot.

Outside Diameter / Length - 0.064 inch Wall Thickness
Specify exact length

Tube End Protectors

3/4" Baltic Birch cut to fit your tube. 1.5" wide over tube's wall with .583" deep channel. Measure tube circumference with a cloth tape measure, wall thickness with a ruler or micrometer.

Press on or glue to tube. Finished end rings are fine sprayed finished using red tinted acrylic polymer.

E-mail for shipping costs, or place order and we'll send shipping costs for pre-approval.

Tube outside diameter
Tube wall thickness