The STARLAB Projector — Features and Specifications

1. High intensity halogen cycle lamp: gimballed to maintain a vertical position at any latitude; the lamp housing serves to define the horizon on the dome; the halogen bulb maintains its full brilliance throughout its life.
2. Transparent cylinder platform: made of plexiglass for resiliency and transparency; projections show through to 75 degrees south declination.
3. Moon phases: these steel disks simulate 12 positions of the moon from the new moon to full moon; attach magnetically to the Starfield cylinder.
4. Magnetic accessory bar: this strip conveniently holds the moon phases, the planet projectors and light blocks where they are easily accessible.
5. Projection lamp dimmer knob, on/off switch: controls the brightness of the projector bulb.
6. Side lamp dimmer knob: controls the brightness of the "house lights."
7. Motorized drive control switch: starts rotation of the cylinder platform.
8. Side lamps: these "house lights" allow light to be directed where it is needed within the dome.
9. Planet projectors: these handset planets (Jupiter, Mars, Saturn, Venus, Mercury) attach to the Starfield cylinder, accurately simulating their appearance in the night sky.
10. Daily motion motor: rotates the cylinders to simulate the movement of the celestial sphere over 24 hours (1 rotation every 4 minutes).
11. Hour and date scale: adjusts to allow you to view the nighttime sky at any time of day and month of the year (see detail).
12. Cylinder alignment key: correctly positions the cylinder on the projector.
13. Latitude map: adjusts to allow you to view the nighttime sky at any desired latitude (see detail).
14. Magnetic cylinder fasteners: secures the cylinder in place on the projector.
15. Pressure bar for adjusting latitude: provides an easy grip for tilting the cylinder platform to change the latitude.

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