Dobsonian Base Parts
Upright Side Panels
Here you can see the new style profile of the sides, which is more sleek and contoured than the original Orion Skyquest scopes, and sports the SkyQuest IntelliScope logo.
On the inside face of the dobsonian side panels can be seen the altitude CorrecTension bearing pads, which are made of Ultra-high molecular weight
These act as a braking system to provide enough friction to prevent the tube tipping up/down whilst you change eyepieces.
The squarish hole below is the back of the communications port where the (optional) IntelliScope Computer Object Locator plugs into the base unit.
Computerized Controller Port for the COL.
Front Brace Board
Next we have the front brace board. This provides strengthening and stability to the side upright panels of the dobsonian base, and holds everything together. When screwed together the front and sides are rock solid. They need to be for the weight they have to carry!
The curved section actually goes at the top. Pre-drilled holes can be seen where the Vertical Stop Knob is screwed in on one side, and the Eyepiece Holder Bracket gets attached on the other face.
The next layer down gives us the circular base (top baseplate) which the upright sides and back screw onto (pre-drilled holes can be seen for attaching these).
In the middle you can see the central axis pivot hole, and the azimuth digital encoder connector recess port, also seen here in close-up.
Finally we are down to the actual Azimuth Bearing base, the ground baseplate. This bears the weight of the whole telescope. You can see the white Teflon bearing pads on the upper side, and black feet get attached to the underside, and the feet are obviously the parts that sit on the floor.
These close-ups show the white Teflon bearing pads which provide the "smooth" rotational motion of the scope in azimuth. The bulk of the weight of the telescope, and upper base rest on these pads.
These are the pads which folk then like to try different ways of improving the friction/stiction aspect so as to reduce any jerkiness when rotating the scope at high magnifications.
Last but not least we need a means of holding it all together. Various nuts, bolts, screws and tools are supplied in plastic bags. In clockwise order from top left they are:-
- Black plastic feet
- Black altitude bearing cylinders and screws
- Base assembly wood screws
- Vertical Stop Knob
- Brass Bushing for main azimuth central axis bolt
- 2.25" long Azimuth axis head screw, fender washers, hex lock nut and Allen key
Other Topics in the Assembly section: