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AstroGoods Mirror Cells
For
6 " to 13.1" primary mirrors.
Designed dimensionally
to your mirror specifications for optimal performance.
6", 8" and
10" mirror cells with calaculated optimal support points. No clip
intrusion in light path.

Front:
adjustable flat black acrylic retaining ring.
Rear: collimation
knobs and lock screws.
Fan insert
cutouts also available.
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Cells are manufactured
individually,
designed to mirror diameter, thickness, focal length, and secondary
size dimensions. This allows calculating the optimal support points
for top performance.
Our new retaining system eliminates intrusive mirror clips, or stressful
gluing. We place a 1/8" thick black acrylic ring 1/8"
over the mirror front, so the mirror can't tip out. The ring is
supported on black 1/4" nylon posts abutting the mirror edges
at 120 degree spacing, preventing unwanted/unnecessary lateral movement
in the cell. Eliminating intrusive mirror clips provides a perfectly
clear circular aperture for sharper images by (reducing
star flaring). The tiny magnitude loss is imperceptible to the
naked eye, and can also cure any turned down "image softening"
edge. And our upcoming spider masks take aim at elimination
of diffraction spikes in your star images for glare free views!
Type
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Description |
Price
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SMC6K |
Standard
Mirror Cell 6" Kit: (7.6" ID min tube). |
$75
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SMC6F |
Standard
Mirror Cell 6" Finished (7.6" ID min tube). |
$100
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PMCK |
Premium
Mirror Cell Kit (8" to 13.1") |
$147
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PMCF |
Premium
Mirror Cell Finished |
$171
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PMCKF |
Premium
Mirror Cell Kit with fan inset |
$160
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PMCFF |
Premium
Mirror Cell Finished with fan inset |
$185
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The Premium Mirror Cell shown at left is our first article (prior
to new acrylic ring), assembled to "dry fit" before
sanding.
Kits
arrive assembled, just disassemble, fine sand and paint or finish.
Materials and manufacture:
Dimensions
and weight:
Retaining
ring NEW!:
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Now
made from laser cut 1/8" black acrylic. (Replaces
wood ring shown).
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Eliminates
mirror clips for a perfectly round mirror face,
no intrusions.
- Overhangs
mirror edge by 0.125". Magnitude reduction is trivial.
- Mirror
cannot fall out through opening.
- 3
black 1/4-20 nylon post pass though acrylic seated into
cell.
- Nylon
screws are safe, designed to touch outside edge of primary.
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Mirror
prevented from lateral movement during vertical
to horizontal.
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Eliminates
any visible mirror clip flare.
Rear
plate:
What
you receive and need:
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