Customer comments/photos.
Updated 6/1/24

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
Mount Only
Mount and Altitude Bearings
Mount, Clamshell Ring, Altitude Bearings
Quote Form
Receive an email with mount/shipping costs and lead time. Orders require 50% deposit.
Your Name:
E-mail Address:
Repeat E-mail:
Shipping Zip Code:
Mount Type Choice:
See table at upper right.
Telescope Tube Circumference (1):
Telescope Tube Balance Point (2):
Special request:

1. Tube circumference:
Please use cloth tape measure wrapped
overlapping around tube.
Tube balance point:
1. Place heaviest eyepiece in focuser.
2. Add finders (optical and 1x) on tube.
3. Roll over broomstick for approx balance.
4. Measure balance point to back of tube.
3. Average prices:
Material costs vary with size.
Mount Type
Average Price (3)
RS-KM Kit mount.
RS-KMSB Kit mount with 12" altitude bearings.
RS-KMLB Kit mount with 18" altitude bearings.
RS-KMCRSB Kit mount with clamshell rings and 12" altitude bearings.
RS-KMCRLB Kit mount with clamshell rings and 18" altitude bearings.
RS-FM Finished mount.
RS-FMSB Finished mount and 12" altitude bearings.
RS-FMLB Finished mount and 18" altitude bearings.
RS-FMCRSB Finished mount with clamshell rings and 12" altitude bearings.
RS-FMCRLB Finished mount with clamshell rings and 18" altitude bearings.
Options: add when placing order.
SCAlt/Az EZ Adjust manual azimuth and altitude.
HAS Height adjustment: Stand Up Mount.

 Deposits and refunds: refunds less PayPal transaction fees before custom design drawings are completed. After drawing completion refund is less $50 plus PayPal transaction fees. No deposit refunds after parts are cut.