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Astronomy—Planetariums, continued
Planetarium, Illuminated, Manual
Create the motions of the Earth, Sun, Moon, and Venus simultaneously with this gearand
chain driven planetarium. The light from the illuminated 6"-diameter Sun follows
the revolving Earth to show solar, lunar, and annular eclipses; phases of the Moon;
seasonal changes; night and day; and twilight. Included is a 12-page instruction
manual for using the planetarium. Durable, well-engineered planetarium promises
years of classroom use. 14" H x 161/2" L; 110V AC.
Catalog No. Description Price/Each
AP5135 Planetarium, Illuminated, Manual $540.00
Planetarium, Illuminated,
Manual
AP5135
Planetarium, Illuminated, Motorized
Just plug it in, turn it on, and watch the synchronized orbital movements of the Sun,
Earth, the Moon and Venus. This motorized version of the planetarium has all of the
dependable features of AP5135 yet is fully automated. 161/2" H x 161/2" L; 110 V AC.
Catalog No. Description Price/Each
AP5136 Planetarium, Illuminated, Motorized $1060.00
Astronomy—Telescopes
Planetarium,
Illuminated,
Motorized
AP5136
Spacestation™
60 mm Refractor
Telescope, Tasco®
AP7123
The Orbiter Planetarium,
Illuminated
AP7860
The Orbiter Planetarium, Illuminated
Illuminate the Sun to demonstrate daylight, night, seasons, and phase of the Moon.
The Sun, Earth, and Moon manually revolve around one another in this gear-driven
model. Earth and Moon are to scale. Arm is 15", Sun is 6", and the Earth is 4". Includes
an 8-page packet with student activities. 6' power cord plugs into a standard wall
outlet. 251/2" x 16" x 101/2".
Catalog No. Description Price/Each
AP7860 The Orbiter Planetarium, Illuminated $309.00
Eyepieces—Low vs. High Power
Use low power eyepieces to view the full Moon, planets, star clusters, nebulae and even
constellations. High power eyepieces, under the right conditions, allow you to see mountains,
ridges, craters and even the light/dark separation line on the Moon.
Determine the Magnification
of Your Telescope
Divide the focal length by the diameter of each eyepiece.
For example:
Focal length = 900 mm
Eyepiece diameters = 25 and 9 mm
Therefore, the low power 25 mm diameter lens will give a magnification of 36X.
The high power 9 mm diameter lens will give a magnification of 100X.
Add a 2X Barlow lens to double the magnification.
EARTH & SPACE SCIENCE ASTRONOMY
See details at flinnsci.com.
Catalog No. Description Price/Each
AP7123 Spacestation™ 60 mm Refractor Telescope, Tasco® $168.00
AP8698 Astro Fi 90 mm Refractor Telescope, Celestron® 515.00
Build Your Own Telescope Kit See page 439.
SkyProdigy 130
Computerized
Telescope
AP10652
Tell Refractor from
Reflector Telescopes
Refractors... are telescopes that use lenses to gather and focus light.
Refractors deliver sharp, high-contrast images with crisp views of the Moon,
planets and stars. The achromatic lens is made of two separate lenses that
work together to yield images free of chromatic aberration, an optical flaw
producing purple haloes around bright objects. Refractors are known for
their rugged simplicity. They are easy to aim, they need little maintenance,
and the lenses rarely need alignment—very popular for beginning students
of astronomy!
Reflectors... are telescopes that use mirrors. Most commonly they use a
concave main mirror at the bottom of the tube, which focuses light back up to
the top of the tube. There, a small flat mirror deflects the light at right angles
to an eyepiece on the side of the tube. Reflectors offer more aperture (objective
lens diameter) for the money than refractors, providing enough light to
reveal hundreds of deep-sky objects as well as show details on the Moon and
planets. However, exposed mirrors can collect dust and grime and may need
occasional adjustments to keep them properly aligned.
FULL KIT DESCRIPTIONS,
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