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Customer comments/photos.
updated 3/26/24
 

Upgrade!


6" imaging Newtonian
extended back end.
GSO - Apertura - TPO

Includes imrpoved mirror cell,
eliminates mirror clip flares
.
 

ATM Altitude and Azimuth
Bearing Parts

Bearing Works: get everything.
Or buy individual items:
Laminate rings and strips.
Teflon pads.
Azimuth bolt assembly kits
.
    

Sharpening Masks

Visual
Primary:Fix Turned Down Edge.
Aperture: Eliminate spider spikes.
 
Imaging

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

Clamshell & Rotating Rings

For Dobsonian mounts
.
For Equatorial mounts
.
 

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.
 
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.

Requirement: Premium mirror cells need a tube inside diameter 1" larger than the primary mirror.

Our new retaining system eliminates intrusive mirror clips without stressful gluing. A 1/8" thick black acrylic ring extends 1/8" over the mirror front, retaining the mirror. The ring is supported by 1/4" bolts to within 1/16th inch of the mirror edges at 120 degree spacing. Add adhesive tape to bolt and softly prevent lateral movement. Eliminating intrusive mirror clips provides a perfectly clear circular aperture for sharper imaging by (reducing star flaring) or curing turned down visual edge softness. 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 Description
 Price
6" Cells
SMC6K Standard Mirror Cell Kit.
$65
SMC6F Standard Mirror Cell Finished
$80
8" to 13.1" Cells
PMCK Premium Mirror Cell Kit
$149
PMCKF Premium Mirror Cell Kit with fan inset
$159
PMCF Premium Mirror Cell Finished
$164
PMCFF Premium Mirror Cell Finished with fan inset
$174

Kits arrive assembled. Just disassemble, fine sand and paint or finish, then reassemble. The mirror cell at left is shown assembled for fit, prior to sanding.


Ordering:

Fill in this form. We will e-mail a PayPal invoice
including shipping cost and estimated ship date.
 
Your name.
Phone number (for ship documents).
Email address.
Repeat email.
Zip/postal code.
Country.
Cell choice.
 
Mirror Dimensions
Mirror diameter.
Mirror thickness.
Focal length or ratio.
Secondary mirror diameter.
Tube inside diameter.


  Materials and manufacture:
  • CNC design and cutting assures precision results.
  • Constructed of rigid, thermally stable light weight 3/4" birch plywood.
  • New front ring (described below) replaces wood ring shown in image.
  • Cell design allows maximum openness for quick cool down.
  • Six-point support positions calculated for optimal performance.
  Dimensions and weight:
  • Fully compressed front plate face to tube mounting holes: 1.25".
  • Fully compressed between front and back plate: 0.125".
  • Fully compressed collimation bolts extend 1" from rear of cell.
  • Back plate O.D. Designed 0.125" (0.25" total) less than tube I.D.
  • 13.1" cell shown weighs approximately 3.6 lbs.
  Retaining ring NEW!:
  • Now made from laser cut 1/8" black acrylic. (Replaces wood ring shown).
  • 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.
  • Mirror prevented from lateral movement during vertical to horizontal.
  • Eliminates any visible mirror clip flare.
  Front plate:
  • Completely open design. No obstructions behind mirror (8"-13.1").
  • Support arms hold mirror 0.125" above front plate.
  Rear plate:
  • Collimating knobs backed with metal washers; smooth easy turning.
  • Cell position can be locked with three nylon screws (8"-13.1").
  • Options: unobstructed or with drilled inset/screw holes for fan (8"-13.1").
  What you receive and need:
  • Kits arrive assembled, unpainted, sanded with 80 grit.
  • All parts included except 0.25" tube mounting bolts and nuts.
  • Requires: finishing or painting and reassembly for kits.