Customer comments/photos.
Updated 6/1/24

Other Dobsonian Goodies

Integrated EZ adjust setting circles.
For your mount, on our bearings, or specific for GSO/Apertura.

Height adjustment stands.

ATM Altitude and Azimuth
Bearing Parts

Laminate rings and strips.
Teflon pads.
Azimuth bolt assembly kits

Sharper Image Masks

Primary:Fix Turned Down Edge.    

Primary: Remove mirror clip flare.
Spider: Remove diffraction spikes.

Premium Mirror Cells
for 6" to 13.1" mirrors.

Each cell design calculated to optimize your mirror's performance. Eliminates mirror-clip aberrations for true circular aperture.

Clamshell & Rotating Rings

For Dobsonian mounts
For Equatorial mounts
AstroGoods.com: Integrated Azimuth Setting Circles

EZ-Adjust Azimuth Setting Circles
Custom sized for your mount, easy to install, easy to use.

Click upper right arrow to enlarge image.


Setting circles help find astronomical objects.
This YouTube will show how easy it is.

  • Set your mount down.
  • Rotate to north determined with compass or centering Polaris.
  • Turn the setting circle ring to align zero with the pointer.
  • Tighten nylon lock-bolt (new feature).
  • Ready to use.

Everything is included in our assembly:

Rocker box bottom board, 6mm thick birch plywood setting circle with pointer, laminate ring, virgin Teflon pads, azimuth bolt assembly, ground board with feet. Shipped to you assembled.

Replaces GSO/Apertura's parts improving stop/start motion.

Rocker box bottom board can be predrilled to match your mount front and side boards screw holes.

Top and bottom board parts are 18mm birch plywood rough sanded (80 grit), available as kit. Sizes up to 23" O.D. Larger available, ask for quote.

Add an Altitude circle and pointer:

On our bearings, as an arc, or for GSO/Apertura.

EZ-Adjust Azimuth Setting Circles
Rocker box board O.D.

Bottom view of ground board.
Feet directly below Teflon pads.
Top view of ground board with Teflon pads.
18mm birch plywood supports circle, no extra weight.
6mm laser inscribed birch plywood
setting circle freely sitting on ground board.
Simply rotate circle to north, stays in position.