Which mount for you?
Sections below include:
If
you are unfamiliar with any terminology, please contact
us so we can help.
Dobsonian
Mount Choices
What do you receive with
a kit or finished mount?
| Kit:
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Wooden
parts (rocker box and ground board) arrive rough sanded with 80
grit, predrilled and countersunk. Parts Include all necessary screws
and dowels in their holes, azimuth and altitude bearings laminate
strips ring along with all bearing Teflon pads. You fine sand, glue
laminates with contact cement, paint or finish. Ships unassembled.
Assembly help/advice is available by e-mail. |
| Finished: |
In addition to above items in a kit, all wooden items are fine sanded,
sealed with three coats General Finishes gloss polymer. Laminates
are glued. You only assemble. |
Mount
Weights
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All
mounts are designed to minimize weight while maintaining structural
rigidity. AstroGoods mounts will be significantly lighter weight
than a comparable commercially manufactured OEM equivalent mount
due to use of Baltic Birch plywood instead of porous (subject
to wicking moisture in dewy conditions) and heavy particle board,
chosen as it is inexpensive (read: cheap).
The large majority of orders we fulfill are custom mounts, so
sizes and weights vary. Our Apertura style mounts is a standardized
design and can provide an idea of weight savings we achieve, based
on user feedback. Weights may vary with design changes:
Apertura
mount weights comparison:
12" OEM mount 38 lbs., AstroGoods
23 lbs.
10" OEM mount 31 lbs., AstroGoods
19 lbs.
8" OEM mount 28 lbs.,
AstroGoods 15 lbs.
We also offer custom solid
lightweight mounts by request!
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Standard Solid Mount
Kits and Finished
Our
most economical mount. Fits up to most 10" telescopes.

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Dimensional requirements
Standard solid mounts are not customizable and only for telescopes
fitting within these dimensions:
23"
maximum telescope tube balance point. How to measure:
Place
heaviest eyepiece in focuser, add all finders you will be using.
Roll tube over fulcrum to determine where it tries balancing.
Measure from approximate balance point to back/mirror end of tube
(or knobs if protruding).
13.6" maximum space inside mount side boards.
13.1" maximum diameter telescope tubes will fit, allowing
0.25" open space between tube and inside of each side board.
13.6" maximum if using tube rings to attach our altitude bearings,
measured from outside flat to opposite outside flat.
If you are unsure e-mail us here and
we can advise whether your telescope will fit.
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About standard
solid mounts:
Optional: Manual setting
circles. Integrated or separate mount height adjustment stand.
Set
design to based on Apertura mounts, for tube without mounts or to upgrade.

About Apertura
style standard solid mounts:
Optional: Manual setting
circles. Integrated or separate mount height adjustment stand.
Custom
Solid Mounts
Kits
and finished
Our most
popular mount, designed custom to fit your tube saving size and weight,
or to add additional strength.

About custom
solid mounts:
-
Custom
designed to fit your telescope, thereby reducing size and weight.
-
Can
be designed to place focuser at a preferred height.
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Dowels
are internal/hidden between abutting front, ground and side boards
to lock in position for stiffness.
- Additional information:
What
do you receive with a kit or finished mount?
Optional:
Altitude bearings (12" or 18"). Clamshell rings with altitude
bearings. Manual setting circles. Mount height adjustment stand, separate
or integrated.

Included
with custom collapsible mounts:
-
Custom
designed to fit your telescope reducing size and weight.
- Can be designed
to place focuser height preference.
-
Optional: Altitude
bearings (12" or 18"). Clamshell rings with altitude bearings.
Manual setting circles. Mount height adjustment stand, separate or
integrated.
Folding a collapsible mount:
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1)
Mount in upright assembled position.
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2)
Left side board is hinged to front board on front inside, allowing
it to swing inward to back of the front board.
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3)
Front board is hinged on outside to right side board. Left and front
boards in unison swing forward...
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4)
And continue around 270 degrees...
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5)
to meet outside of right side board. Right side board is hinged
on inside bottom edge to rocker box ground board.
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6)
Entire assembly lays down inward onto rocker box bottom board and
ground board.
Mount folds flat to 5" height.
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If your tube needs altitude bearings, or you wish to upgrade to larger
altitude bearings we offer two sizes with our mounts:
12
inch outside diameter (left photo) full circle bearings. Hand holds
incorporated. Laminate applied to half the circle.
18
inch outside diameter (right photo) half circle bearings. Hand hold
openings are incorporated. Laminate applied to entire half circle.
Bearings attach to your telescope through a 3/8" hole centered
in the bearing. Inside facing arced braces secure bearing to tube.
Or:
Bearings can attach to your existing ring set, on the drilled flats.
Or:
Bearings
can attach to outside of clamshell rings we supply. Allows repositioning
forward/back or rolled for focuser position.
18 inch altitude bearings
suggested for 10" and larger telescopes and/or long tubes. Provide
more stable balance and finer incremental altitude movement.
- Adds 1.5"
to the width of a mount.
- Bottom clamshell
boards connected by heavy duty anodized aluminum piano hinge.
- Top boards secured
with by thumbscrew transversally through 3/8" holes into 1/4-20
wood insert. Cannot pull out.
- Top of clamshell
is gapped 0.1875" to allow tightening securely to your tube.
Add adhesive back felt or other cushioning if desired.
Materials:
-
3/4"
(18mm) Baltic Birch plywood is standard for most of our wooden parts.
-
Altitude
and azimuth bearings use Formica Crystal 909-42 laminate riding on
Virgin Teflon pads.
-
Small
parts for assembly may include:
#8x1.25" exterior grade Torx wood screws with bronze epoxy
coating provides 4 layers of corrosion protection.
3/8"
wood dowels.
2"
wide heavy duty anodized aluminum piano hinge.
1/4-20
clamping knobs.
1/4-20
ID 3/8" OD knife edge brass wood inserts.
Various
nylon bolts.
1/4-20x2.5"
spade thumb screws.
#4 brass finish
screws for laminate strips.#6
stainless steel wood screws for securing Teflon pads and piano
hinge.
We receive your
order.
AstroGoods e-mails
a confirmation of the order and provide a schedule with design and
estimated shipping dates.
You next receive a design drawing PDF for review, request modification,
or approve.
Shipping date estimate based on timely design approval (1 week or
less).
After design
approval steps are:
Programming CNC cuts.
CNC cutting of parts.
Inscribing setting circles if ordered.
Laser cutting of laminate ring.
Assembly of parts to assure proper fit.
Sanding parts for orders requiring finish.
Applying wood finish if ordered.
Install altitude and azimuth laminate and Teflon.
Competition notice and e-mail.
If any balance
due, you
receive PayPal invoice.
Balance due is paid.
Order shipped.
U.S.
Destinations via FedEx Home Delivery or US Postal Service Ground delivery.
International orders shipped US Postal Service.
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Countries
shipped to:
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Australia
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Brazil
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Canada
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Czech
Republic
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Dubai
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England
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Finland
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France
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Germany
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Greece
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Ireland
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Israel
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Japan
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Mexico
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Netherlands
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Norway
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Singapore
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South
Korea
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United
States
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