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.

  • Low cost standard mounts with bearings.
  • Custom Dob mounts improve your observing.
  • SCT and other telescopes on Dob mounts.
  • Low cost 6" with custom optimized supports.
  • 8" - 13.1" with custom optimized supports.
  • Universal cells for conical/standard mirrors.

Altitude Bearings

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

Clamshell Rings

  • Mount your Dob tube on an equatorial head.
  • Building a mount? Add rings and bearings.
  • Lightweight rings for smaller telescopes.
  • Altitude bearing strips.
  • Azimuth bearing rings.
  • Teflon pads sets for bearings.
  • Aluminum tubes.
  • Tube end rings.

Streetlight Baffles

  • Eliminate light around 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 match the diameter of your OTA, leaving just enough room to apply a felt lining or weatherstripping. Heavy duty rings are CNC cut to your mounting plate hole pattern assuring a precise match. Prices are for up to 12" tube diameter. Small additional materials charge added for larger, which we'll quote
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.


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.