CNC Manufactured AstroGoods.

New Products

Low cost standardized mounts.
Rotating rings for GEMs.
4.25" mirror cells - soon.

Primary mirror masks.

Crystal 909 bearing laminate.

  • Limited Time End Of Summer Pricing.
  • Low cost standard mounts with bearings.
  • Custom mounts to improve performance.
  • SCT and other OTAs on Dob mounts.
  • Limited Time End Of Summer Pricing.
  • 6" - 13.1" optimized to your mirror's spec.
  • Universal cells for conical/standard mirrors.

Altitude Bearings

  • Swap small bearings for large ones.
  • Small bearings fitted to your tube O.D.
  • Large bearings for tubes or mirror boxes.
  • Add bearings to Newtonian ring sets.
  • Bearing supports.

Clamshell Rings

  • Equatorial head mounting your Dob OTA.
  • Clamshell Rings and Bearings.
  • Lightweight rings for smaller telescopes.
  • Alt and Az bearing laminate strips and rings.
  • Teflon Alt and Az pads.
  • Aluminum tubes.
  • Tube end protectors.

Streetlight Baffles

  • Keep stray light away from your focuser.
  • FRP azimuth disks and rings.

Clamshell Rings
E-Mail for shipping estimates
Interested in Rotating Rings?



Place your telescope on an equatorial head. Clamshell ring are custom designed to closely fit he circumference of your OTA while leaving room to apply a felt lining or weatherstripping for the perfect fit.

These heavy duty rings are CNC cut to your mounting plate hole pattern assuring a precise match.

Prices are for up to 12" tube diameter. Inquire for larger tubes.
Heavy Duty

Light Weight
Order Clamshell Rings
Heavy Duty Kit
  $90.00
Heavy Duty Finished
$130.00
Lightweight Kit
  $60.00
Lightweight Finished
$100.00

Place Order
Options:
Tube Diameter

Kit: All parts included, wooden parts are rough sanded with 80 grit, holes pre-drilled. All parts dry-fitted before shipping. Kits may be shipped worldwide. What you'll need: Philips screwdriver, sandpaper, wood glue, adhesive backed felt to line inside of rings.

Finished: Arrive ready to use except for adhesive back felt to line inside edge of rings. We can advise on procuring..


Materials:
CNC precision cut 3/4" Baltic Birch plywood. Anodized heavy duty aluminum piano hinge. Steel wood screws. Clamshells open and close using a 2-1/4" thumb screw that passes through one of the top boards into a 1/4-20 brass threaded insert in the abutting board.