Custom tube to hold Vixen / Orion BT80M-A binocular telescope
Created 7-Mar-2004

This tube will allow the BT80M to rotate.  It was made so that the BT80M can be mounted on an equatorial mount.

Mounted on equatorial mount
Mounted on equatorial mount
Mounted on unistar mount






Details
Details
Details
Details

Parts list:
Description
Supplier
Item Number
Quanity
Lumber



5-1/2" x 1/2" x 1' Popular board
Local lumber store

1
3-1/2" x 3/4" x 1' Popular board
Local lumber store
1
2" x 1/4" x 1' Popular board


1
Hardware



1/4"-20 Hex drive knife-thread insert 33/64" long
McMaster-Carr Supply Co. 92105 A100
2
3/8" stainless steel washer Local hardware store

1
1/4" stainless steel washer Local hardware store
5
3/8"-16 x 1" stainless steel socket head cap screw
Local hardware store
1
1/4"-20 x 1" stainless steel socket head cap screw Local hardware store
1
1/4"-20 x 3/4" stainless steel socket head cap screw
Local hardware store

2
1/4"-20 x 1/2" stainless steel round head machine screw
Local hardware store

1
1/4"-20 x 3/4" stainless steel round head machine screw
Local hardware store

1
Yellow plastic thumb screw head, fits 3/8" socket head screw
McMaster-Carr Supply Co.

1
Black plastic thumb screw head, fits 1/4" socket head screw
McMaster-Carr Supply Co.
1
Fiberglass-filled nylon knurled-rim knob 1/4"-20 x 3/4"
McMaster-Carr Supply Co. 63625 K91
2
Plastic two-arm knob 1/4"-20 blind hole threaded insert
McMaster-Carr Supply Co. 6477 K69
2
Neoprene rubber edge trim, 1/16" opening, 7/32" inside depth
McMaster-Carr Supply Co. 8507 K121
3 ft.
Aluminum pull handle 3" white McMaster-Carr Supply Co. 6356 A14 1
Tube



Vixen 232mm tube rings
Anacortes
AM-TR-8737
1
Solid aluminum dovetail bar
ScopeStuff
L5DB
1
9" O.D. x .064" wall thickness aluminum tube, one end rolled
Hastings Pipe Co.

1 ft.
Red dot finder
ScopeStuff
RDP1
1
Red dot finder base
ScopeStuff RDPB
1
Additional felt for tube rings, self-stick
Local craft store

1









Pictures:
Mounting board
Mounting board

Tube
Tube

Tube rings
Tube rings

Mounting board attached
Mounting board attached

Front View      Back view
Views of completed custom tube

Designed and build by William E. Rison