The image at right is of the altitude adjustment. This adjustment lies below the NGT-18 bar. The knob is attached to a screw that pulls the assembly across a circular base that adjusts the whole scope in terms of elevation.
Note the silver tube above the metal bar. The tube is the split ring on which the equitorial mounting is based. The ring has a diameter of about 36 inches.
In the image to the right, see the NGC-Max computer. Above and to the right is a large knob which locks down the declination axis. Note the two connectors comming up and out of the computer. THe connecto to the right transmits the signals from the encoders while the left connector handles power. The computer rides just above the split ring.
This is the Declination motor. It is mouonted under the computer.
The red buttons are the focuser controls. The odd litle thing above the focuser controls is a broken Potentiometer used to regulate the focusing speed. Speed is not minimized which is good.
To the right are the four direction buttons for controling motion in RA and Dec
Note the two knurled knobs on the right center. The rightmost one clamps the Craford focuser in position. The center knob engaged and dis-engages the gold sprockt from the black nylon gear. Counterclockwise disengages, allowing the leftmost knob to be used to control focus, while engaged, allows the focuser buttons to control the focus setting.
The black knob is used to lock RA so that it only turns under the control of the RA motor. This is the place where the split ring mount is driven. The RA motor is shown in the lower center of the photo. It doesn't show up very well, but it drives the shaft that the black knob is attached to at the top.
