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

Windscreen

The 36" windscreen is a slit cover that will extend about 1/3 of the way up the slit. Like many windscreens of this type, it works in low wind speed when a windscreen is often not necessary. It is normally parked in the down position. The windscreen controls are on the desk (Figure 1) and on the paddle (Figure 2). The desk control is a toggle switch that can be set in the up or down position and left there if the resulting maximum or minimum height is the desired position. If one wishes to leave the screen part way up then the screen switch will have to placed back into the stop (neutral) position. From the telescope, the buttons are on a paddle and will move the windscreen until they are released. The windscreen may have to be adjusted to prevent it from occluding the telescope as the telescope tracks.


Figure 1: Desk control panel, the windscreen control is in the middle top, just above the dome rotation switch.


Figure 2: Dome control paddle on telescope. Top button sends windscreen up, bottom just below it sends the windscreen down.


Figure 3: Bottom of the dome slit with the screen in the stow position)