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Dobsonian Goodies

EZ adjust setting circles.
Apertura/GSO motion fix.
Height adjustment stands
 


Comments & Photos


Updated 10/1/24
    
 
ATM Altitude and Azimuth
Bearing Parts

Laminate rings and strips.
Teflon pads.
Azimuth bolt assembly kits.

Image Sharpening Masks

Visual: TDE soft image fix.     
Imaging: Remove mirror clip flare.
 

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.
   

Altitude Bearings

Better balance and motion for your telescope:

An excellent example for improving balance is a tightrope walker using long poles to spread weight over a wider area. Imagine standing with your feet close together and being pushed from the side: very unstable. Widening your stance greatly increases stability. Larger altitude bearings provide that wide stance for your telescope. Larger bearings also provide finer incremental movement as increased bearing circumference provides more space between each degree, more room = more control. The difference will make you a quick fan of larger bearings.

Customer photos/comments
Pricing/Ordering


5" factory bearings.
Bearing upgraded to 12".



Upgrade your 5" bearings to 12".
Quickly and easily.
About balance and motion
Pricing/Ordering

Photos: (L) small factory 5" bearings, (R) upgrade attached externally.

Fit internal or external to side walls depending on mount design.

Bolt holes customized to your telescope.

Will these fit your mount side walls? Check these dimensions.

All parts included: 18mm Baltic birch bearings and supports with captures (see 12" bearing unfinished below), laminate, Teflon, screws.

12" Bearing Internally Mounted.
12" Bearing (unfinished).

Standard 12" and 18" bearings.
About balance and motion
Pricing/Ordering

All bearings use "3/4" inch Baltic birch plywood (18mm). Available as kits or finished. Finish uses gloss polymer from General Finishes.

Choose among these options - advise what you need or ask us:

Carry handles are built in.
18" bearing.		 What you get: all parts included. Bearings, Teflon (with supports only), laminate strips, fine tuning assembly (optional).

What you need: Kits require glue for laminate (contact cement), glued with finished bearings, Torx (#8) and Phillips (#4) screwdriver, longer tube attachment bolts (if necessary).

Choosing between 12" and 18" altitude bearings: Generally, the shorter the tube, the smaller your bearings can be and maintain balance. Larger tube diameters and/or heavier, the larger the bearing needed.

Several "rules of thumb" for bearing size exist, from 1.2 to 2.0 times the telescope's aperture. Size matters: Go bigger and have no regrets.

Pricing/Ordering

Shipping Quote Form.
Your Name:
E-mail Address:

Repeat E-mail:
Shipping Zip or Country/Postal Code:
Type:
Type Description
Price
5BUK Upgrade your 5" bearings to 12" Kit  $65
5BUF Upgrade your 5" bearings to 12" Finished $111
S12BK Standard 12" Bearings Kit  $53
S12BSK Standard 12" Bearings with Supports Kit $67
S12BF Standard 12" Bearings Finished  $87
S12BSF Standard 12" Bearings with Supports Finished  $105
S18BK Standard 18" Bearings Kit   $79
S18BSK Standard 18" Bearings with Supports Kit $99
S18BF Standard 18" Bearings Finished $121
S18BSF Standard 18" Bearings with Supports Finished $147
CSB Custom Size Bearings: Request quote.
Order.
.