User's Guide to the Lick 36" Refracting Telescope

Introduction
Dome
General
Floor
Slit (shutter)
Windscreen
Rotation
Lighting
Telescope
General
Balance
Lens Cover
Motion
Position Indicators
Finderscope
Tangent Arm
Reversal
Access Ports
Control Desk
Console
Contents
Limits
Pointing
Weather
Safety
Observing Hits
Checklist
Trouble Shooting
Mt. Hamilton Homepage

Rotation

The 36" dome is a manual dome. The dome's park position is East and is rotated such that the orange lines line up (the East line not the similar line on the dome rotation motor). It is not necessary to be perfect, about +/- 8 inches or so is good. It rotates by either by actuating the desk switch (see Figure 2) or by pressing and holding a button on the dome/floor paddle (see Figure 3). It turns clockwise or counter-clockwise. Once you start moving the dome motor it will take a second or two to actually start rotating the dome. When you stop pushing the buttons it will continue moving for a second or two (about 1-2 feet). If you wish to move it in the opposite direction you must wait for the dome to stop and the relay switch to unlock before you can move it in the opposite direction.


Figure 1: Bottom of the dome slit with the parking lines aligned


Figure 2: Desk control, the windscreen control is in the middle top above the dome rotation switch.


Figure 3: Paddle control, the dome clockwise button is the right button on the floor/dome paddle and the dome counter-clockwise button is the left button on the floor/dome paddle.

Last modified: Wed Jun 30 11:47:48 PDT 2010