Designs are modified from the book “Build your

own Telescope” by Richard Berry.

All modifications are mine based on requirements

or alterations needed due to materials or tools

available at the time of my build.

For further instructions, read the book! I make no

warranty on the accuracy of these designs. This

is how I built mine.

Shawn Kirchdorfer - Arlington, Texas

Newtonian Telescope

6-inch f/8

Dobsonian Mount

January 12, 2009

SIZE FSCM NO DWG NO REV

SCALE 1/4 : 1 SHEET 1 OF 9

H

G

F

E

D

C

B

A

8 7 6 5 4 3 2 1

H

G

F

E

D

C

B

A

8 7 6 5 4 3 2 1

TOP

FRONT

SIDE

Metal 90 degree

Angle bracket (x2), slightly

bent to match brace angle

Half sheet of ¾-inch Plywood (48"x48")

Three 10" lengths of 2"x4"

Two 6½" rounds of ¾” MDF board or

other rigid circular item such as PVC

pipe flange.

½” strip of aluminum strapped around diameter

and secured with screws if wood is used.

Ø 16

1/8-inch Plexiglass

or

¾” wooden counter top with Formica type

covering can be used instead.

* If counter top method is used then disc #3

is not needed.

These marked pieces are used ONLY if a cylindrical cardboard concrete tube is used for

the tube body. Otherwise they are not used.*These marked pieces are OMITTED if a cylindrical cardboard concrete tube is used for

the tube body.** *These marked pieces are ALTERED if a cylindrical cardboard concrete tube is used for

the tube body. Cut outer diameter circular.**

Ø 16

Ø 16

48.00

Cut-out for

Azimuth Scale

window.

(Optional)

Disc #2

Disc #1

48.00

90 9090 90

Mirror Cell

Rear

Bulkhead

7.00

7.00

Central Bulkhead

Front

Bulkhead

Ø 6.5

Ø 16

Disc #3

2.00

8.00

8.00

Altitude

Bearing

Mounts

to Side

of this

box here

Altitude

Bearing

Mounts

to Side

of this

box here

Rocker Base

Side Board

B

Support Strut 3 of 4

Support Strut 4 of 4

21.75

6.75

13.00

15.00

2.00

7.25

6.50

Rocker Base

Side Board

A

Support Strut 2 of 4

Support Strut 1 of 4

Front Board

16.00

8.50

2.00

Ø 1.25

10.00

Eyepiece Holder (opt.)

* * * *

*

*

*

*

*

*

*

*

*

*

Half sheet of ½-inch Plywood

(48"x48")

90 90

Glue and nail

here

Screws only

here 0.50

7.00

8.008.00

8.00

7.00

7.00

48.00

48.00

6.32

6.32

Ø 2.00

Ø 0.75

Ø 0.50

Ø of mirror + 5/16th inch

0.25

Ø 0.31Ø 1.00

R 1.00

0.75

0.25

Ø 3.54

0.25” T-Nut

MIRROR CELL ASSEMBLY - A

Ø 0.25

Ø 1.00

Ø 0.32

Ø 1.00

Ø 5.50

0.25” T-Nuts (x3)

REAR BULKHEAD ASSEMBLY - A

0.75

Ø 2.00

Ø 0.75

Ø 0.50

Ø of mirror + 5/16th inch

0.25

Ø 0.31Ø 1.00

0.75

0.25

Ø 3.54

0.25” T-Nut

MIRROR CELL ASSEMBLY - B

Ø Equal to MINUS ¼ inch

of Inner Diameter of Tube

Ø 0.25Ø 1.00

Ø 0.32

Ø 1.00

Ø 5.50

0.25” T-Nuts (x3)

REAR BULKHEAD ASSEMBLY - B

0.75

Ø 7.00

Or

The inner diameter

of telescope tube

FOCUSER HOLE PLACEMENT FORMULA

Telescope in use at a star party. Telrad

mounted near top of tube.

The black rectangles at end of tube are

counter weights*. (*dead computer hard drives)

Telescope in use at a star party. Telrad

mounted near top of tube.

The black rectangles at end of tube are

counter weights*. (*dead computer hard drives)

Painted with gray primerPainted with gray primer

Fully painted with setting

circles and eyepiece tray

Fully painted with setting

circles and eyepiece tray