National Geographic 80-20104, Instruction Manual

Page 1: ...hthisdevice WARNING CHOKINGHAZARD Smallparts Notforchildrenunder3years WARNING FUNCTIONALSHARPPOINT Notforchildren under3years WARNING Thelenscontainsleadthatmaybeharmful Washhandsaftertouching WARNIN...

Page 2: ...ICE DEPARTMENT AND CAN SEND THE DEVICE IN TO BE REPAIRED IF NECESSARY DO NOT SUBJECT THE DEVICE TO TEMPERATURES EXCEEDING 60 C 140 F DISPOSAL KEEP PACKAGING MATERIALS LIKE PLASTIC BAGS AND RUBBER BAND...

Page 3: ...Available Downloads Visit www esmanuals com Parts Overview 1 40 mm Objective Lens 2 Tabletop Tripod 3 Optical Tube Assembly OTA with Dew Shield 4 Tripod Head 5 Focus Wheel 6 Diagonal 7 Eyepieces H6 mm...

Page 4: ...d target you will have to track the object as it journeys across the night sky For a closer look at an object you can insert the 6mm eyepiece The magnification will increase from 20x to 67x Cleaning Y...

Page 5: ...e H20mm eyepiece into the diagonal and turn the focuser until the image is clear After mastering the H20mm eyepiece switch to the H12 5mm eyepiece and practice scanning and focusing Choose several ter...

Page 6: ...yepiece An eyepiece is an optical accessory comprised of several lens elements It determines the magnification of a particular observing setup Barlow Lens A Barlow lens effectively increases the focal...

Page 7: ...elescope with a focal length of 1000mm and a 100mm clear aperture has a focal ratio of f 10 Exit Pupil The exit pupil is the diameter of the beam of light coming out of the eyepiece To calculate exit...

Page 8: ...light is reflected back up the tube to a flat secondary mirror which sits at a 45 angle in relation to the eyepiece Light bounces off of this secondary mirror and out through the eyepiece A reflector...

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Page 10: ...ATTERY COMPARTMENT IN WATER NON RECHARGEABLE BATTERIES ARE NOT TO BE RECHARGED RECHARGEABLE BATTERIES ARE TO BE REMOVED FROM THE TOY BEFORE BEING CHARGED RECHARGEABLE BATTERIES ARE ONLY TO BE CHARGED...

Page 11: ...ns collection tools and an experiment guide Parts Overview 1 20x Eyepiece 2 Focus Knob 3 Stage 4 Stage Clips 5 Objective Turret 5x 20x 45x 6 Illumination ON OFF Switch and Mirror 7 Base and Battery Ca...

Page 12: ...ocation with adequate illumination the following basic rules should be observed Start with a simple observation at the lowest magnification Position the object or specimen in the middle of the stage u...

Page 13: ...st magnification is not always the best for every specimen Troubleshooting Guide Problem Solution No recognizable image Turn on light Readjust focus Start with the lowest power objective 5x No image C...

Page 14: ...oundbreaking book filled with descriptions and illustrations of observations he made with a telescope In this publication Hooke coined the term cell when describing the microscopic structures that he...

Page 15: ...articular lens combination is determined by multiplying the magnification of the eyepiece lens and the magnification of the objective lens Due to the combination of lenses compound microscopes have hi...

Page 16: ...irected toward the right eye and one to the left This results in a three dimensional view This type of microscope has a low magnification range that is geared toward observing larger solid objects lik...

Page 17: ...scope magnification is determined by multiplying the magnifying power of the eyepiece and the magnifying power of the objective lens For example a 10x eyepiece with an objective lens set at 40x will e...

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Page 20: ...PHIC and Yellow Border Design are trademarks of the National Geographic Society used under license 2022 Explore Scientific LLC 1010 S 48th Street Springdale AR 72762 All rights reserved Made in China...