TUBE HARDWARE
The following items can be used in conjunction with the sonotubes offered in this catalog:
DOBSONIAN TUBE BEARINGS (HUBS)
The following tube bearings are bolted onto the tube and are used as the pivot point to move the tube up or down. The bearings are made out of injection molded plastic. The tube upon which they would fit best would be those sizes set out in the column below.
DOBSONIAN TUBE BEARINGS |
DESCRIPTION |
APPROX. OUTSIDE TUBE DIAMETER |
BEARING SIZE—DIAMETER X WIDTH |
PRODUCT CODE |
6" Primary Mirror |
7.00 |
4" Diameter x 1" in Width | BEAR600 |
8" Primary Mirror |
9.30 |
4" Diameter x 1" in Width | BEAR800 |
10" Primary Mirror |
12.36 |
4" Diameter x 1" in Width | BEAR1000 |
12.5" Primary Mirror |
14.45 |
4" Diameter x 1" in Width | BEAR1250 |
HELICAL FOCUSER EYEPIECE MOUNT
These 1.25" low-profile focusers are black anodized and designed to fit any tube diameter. Focusing is achieved by rotating the eye piece holder.
The unit has been engineered to provide a mount to hold a secondary mirror stalk. A list of stalks follow that will fit
the mount on the focuser.
HELICAL FOCUSERS |
DESCRIPTION |
PRODUCT CODE |
1.25" Helical focuser eyepiece mount |
HFXX125 |
2.00" Helical focuser eyepiece mount |
HFXX200 |
SECONDARY MIRROR STALKS FOR HELICAL FOCUSER |
DESCRIPTION |
PRODUCT CODE |
| Secondary mirror stalk for a 4.25" and 4.50" scope | HFSMS425 |
| Secondary mirror stalk for a 6.00" scope | HFSMS600 |
| Secondary mirror stalk for a 8.00" scope | HFSMS800 |
SPIDER AND DIAGONAL HOLDER
The spider consists of four vanes which are made out of .035" sheet steel. The width of the vanes have been engineered to support the secondary mirror holders with the least amount deflection. Because of their design, there is minimum obstruction in the light path.
The secondary mirror holder has been design to mount onto the center of the spider. The holder has adjusting screws to facilitate the collimating of the entire system.
FOUR VANE SPIDERS (DIAGONAL HOLDER NOT INCLUDED) |
||
DESCRIPTION |
RECOMMENDED TUBE SIZE |
PRODUCT CODE |
| 6 inch mirror tube | 7.00" |
SPIDER600 |
| 8 inch mirror tube | 9.05" |
SPIDER800 |
| 10 inch mirror tube | 12.00" |
SPIDER1000 |
| 12.5 inch mirror tube | 14.00" |
SPIDER1250 |
| 13.1 inch mirror tube | 14.00" |
SPIDER1310 |
| 16 inch mirror tube | 18.150" |
SPIDER1600 |
DIAGONAL HOLDER HOUSING AND MOUNTING STEM (SPIDER NOT INCLUDED) |
DESCRIPTION |
DIAGONAL SIZE |
PRODUCT CODE |
| 4.25 inch mirror tube* | 1.00" |
DIAHLD100 |
| 6 inch mirror tube* | 1.30" |
DIAHLD130 |
| 8 inch mirror tube* | 1.52" |
DIAHLD152 |
| 8 inch mirror tube* | 1.83" |
DIAHLD183 |
| 10 inch mirror tube* | 2.14" |
DIAHLD214 |
| 12.5 inch mirror tube* | 2.61" |
DIAHLD261 |
| 13.1 inch mirror tube* | 3.10" |
DIAHLD310 |
| 14.5 inch mirror tube* | 3.25" |
DIAHLD325 |
| 16 inch mirror tube* | 3.50" |
DIAHLD350 |
| 17.5 inch mirror tube* | 4.00" |
DIAHLD400 |
NEWTONIAN MIRROR CEILS
Two types of mirror cells will be offered after August 1, 1996. The first type is made from wood and has mounting hardware for the end of the tube. These units have adjusting hardware for collimating the mirror.
The second type of cell being offered is cast aluminum. These units are also designed to mount near the end of the tube. These units have adjusting hardware for collimating the mirror. This units require assembly and are as cast. They will need to be painted with a flat black paint or black anodized
WOOD MIRROR CELLS |
DESCRIPTION |
RECOMMENDED TUBE SIZE |
PRODUCT CODE |
| Cell for 6 inch mirror tube | 7.050" |
WMCX600 |
| Cell for 8 inch mirror tube | 9.050" |
WMCX800 |
| Cell for 10 inch mirror tube | 12.00" |
WMCX1000 |
| Cell for 12.5 inch mirror tube | 14.040" |
WMCX1250 |
| Cell for 13.1 inch mirror tube | 14.040" |
WMCX1310 |
ALUMINUM MIRROR CELL KITS- HEAVY DUTY-ADJUSTABLE TUBE MOUNT |
DESCRIPTION |
RECOMMENDED TUBE SIZE |
PRODUCT CODE |
| Cell for 4.25 inch mirror | ADJUSTABLE 5" TO 5.5" DIAMETER | AMCX425 |
| Cell for 6 inch mirror | ADJUSTABLE 7" TO 8" DIAMETER | AMCX600 |
| Cell for 8 inch mirror | ADJUSTABLE 9" TO 10" DIAMETER | AMCX800 |
| Cell for 10 inch mirror | ADJUSTABLE 11" TO 12" DIAMETER | AMCX1000 |
| Cell for 12.5 inch mirror | ADJUSTABLE 13.5" TO 14.5" | AMCX1250 |