CNC Manufactured

About Our Dobsonian Mounts.
  Custom Collapsible Mounts.
  Custom Solid Mounts.
  Standard Solid Mounts.  
Clamshell Rings.
Comments And Photos.

Monthly E-Mail Discounts
We offer discounts once monthly via our e-mail list. Your information is not be used for other purpose.
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Mirror Cells and Masks
Custom designed to fit and maximize your mirror's performance.
E-mail for shipping estimates

8" - 13.1" Optimized 6 Point Flotation

AstroGoods mirror cells are individually designed and built specifically to optimizing the support points and optimize performance. By matching the design to your mirror's specifications, we minimize stresses in the glass. Glass acts like a plastic, deforming with any stresses. "Just enough" room is provided in the cell for your mirror; floating support pads rise 0.125" above the top plate, 0.125" space between both the mirror's side and three vertical supports and under the retraining clip overhangs.

Upon placing an order you transfer to this dimension form for information required to design your mirror cell.

 Mirror Size
Cell Weight 
Minimum Tube ID
0.8 lbs.
 8.0" - 13.1"
1.0 - 2.25 lbs.
Varies by mirror size.

  • Cells are constructed of thermally stable light weight .708" Baltic Birch plywood.
  • Minimum height between front of forward plate and rear of back plate: 1.875"
  • Mounting holes for 0.25" bolts and nuts drilled in spokes 0.354" forward in back plate.
  • 0.25" space (0.5" total) between cell and tube wall for ease of installing or removal.
  • 6" mirror cell kits have marks at the three optimal support positions to add felt pads.
  • 8" - 13.1" mirror cells have floating six-point supports at calculated best positions.
  • All cell rear plates drilled to accept cooling fans.
  • Kits rough sanded, all parts included. Requires fine sanding, finishing/painting and assembly.
Top and bottom views of 10" cell kit in process.

Standard 6" cell after painting.

Mirror masks for image sharpening.
Covers mirror clips, attaches with Velcro.
0.035" thick custom cut laminate rings to 16" O.D.
We will e-mail for your I.D. and O.D. dimension.