Sharp SL-550 Guia de Resolução de Problemas descarregar pdf (Página 28)

Set-up/Operation • A-28 •

Projecting Planets with the Starﬁeld Cylinder

In addition to the magnetic moon phase inserts, the STARLAB accessory box also

contains 5 clearly marked planet projectors that allow you to place any or all of the

naked eye planets into the night sky. The planet projectors have the same type of

magnetic attachment system as the moon phases and they use the same light ports on

the STARLAB cylinder. Each planet projector is designed with a moveable mirror that

allows the image to be accurately placed in the sky. In addition, each planet projec-

tor has it’s own lter and aperture so that the projections have a realistic color and

magnitude. Using the planet projectors, you are able to project up to 5 planets in the

night sky at the same time.

Start by identifying which planets you wish to project by looking at a detailed star

map for the month you wish to view the sky. Star maps showing planetary positions

can be found at many different Web sites as well as publications such as Astronomy,

Sky and Telescope and Science and Children. You can also subscribe to monthly

star maps and the sky calendar from the Abrams Planetarium in East Lansing Michi-

gan. The star map will give you the exact location of the visible planets relative to the

constellations and the ecliptic.

Set the Stareld cylinder for the correct date and time and then locate the position in

the sky where the planet should be. Find the light block closest to that position and

remove it. If this light port is being used to project either the Sun or the moon, remove

the light block from the next light port over to either the right or left. Place the mag-

netic bottom of the planet projector over the hole so that it “locks” into place.

Make sure that the planet projector is centered over the hole in the cylinder. If the

light does not shine directly through the hole, the brightness of the planet will be

diminished or it will not be visible at all. Gently move the handle on the planet

projector back and forth while looking toward the sky. You should see a bright “star”

moving back and forth. This is the planet you are projecting. By rotating the planet

projector in the hole and by moving the handle that controls the mirror, you can move

the planet into the desired location. If you are setting more than one planet, you can

move onto the next one and the rst planet will remain set in its position, even when

the Stareld cylinder is put into motion.

Note

Be careful not to force the handle of the planet projector beyond the stop-

ping point or you can damage the mirror. When the planet projectors are at-

tached to the Starﬁeld cylinder, the cylinder will not ﬁt in the round cylinder

storage bin in the projector case. If you want to remove the cylinder and use

it again without resetting the planet projectors, you can store the cylinder

temporarily in the large rectangular bin in the projector case. Never clean

the mirror on the planet projector with any abrasive cleaner or material.

They are easily scratched!

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Sharp SL-550 Guia de Resolução de Problemas Página 28