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Premium Mirror Cells
For
6 " to 13.1" primary mirrors.
Designed custom
to specifically match your mirror specifications for optimal performance.
6", 8" and
10" examples with acrylic retaining ring eliminating mirror 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 precise support points
for optimal performance.
This cell design requires a tube inside diameter at minimum
1" larger than the primary mirror.
Retaining ring eliminates intrusive mirror clips without gluing
which can stress the mirror. A 1/8" thick black acrylic ring
extends 1/8" over the mirror front, retaining the mirror. The
ring is supported by three bolts with inner side 1/16th inch from
the mirror edges 120 degree apart. Add a layer of adhesive cause
around the bolt to softly prevent lateral movement. Result is a
perfect circular aperture for sharper imaging by (reducing
star flaring) and/or curing turned down edge that results in
image softness. The tiny magnitude loss at the mirror's edge is
imperceptible.
We are also now asking for testers of our new spider masks for eliminating
bright star diffraction spikes to get glare free star images.
| Type
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Description |
Price
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6"
Cells
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| SMC6K |
Standard
Mirror Cell Kit. |
$87
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| SMC6F |
Standard
Mirror Cell Finished |
$105
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8"
to 13.1" Cells
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| PMCK |
Premium
Mirror Cell Kit |
$155
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| PMCKF |
Premium
Mirror Cell Kit with fan inset |
$155
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| PMCF |
Premium
Mirror Cell Finished |
$188
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| PMCFF |
Premium
Mirror Cell Finished with fan inset |
$188
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Kits
arrive assembled. Simple disassembly for fine sand and paint or
finish, then reassemble. The
mirror cell at left is shown assembled for fit, prior to sanding.
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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