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Страница 1: ...OWNER S MANUAL DOBSONIAN TELESCOPE ASTRONZ GS680 200mm 8 F 6 ASTRONZ GS880 254mm 10 F 5 ASTRONZ GS980 303mm 12 F 5...
Страница 2: ...mer we can keep our prices down and give you the best value on the New Zealand market As passionate astronomers ourselves we understand how important it is to have the highest quality precision optics...
Страница 3: ...ents Introduction 4 Specification 5 Parts 6 Assembly 7 Using your Telescope 10 Focuser 10 Eyepieces 10 Finderscope 11 Observation Tips 12 Selecting a SIte 12 Cooling 12 Seeing 12 Storage 13 Maintainen...
Страница 4: ...eur astronomers for a reasonable cost In a Newtonian reflector telescope invented by British scientist Sir Issac Newton 1642 1727 light enters the telescope throught the top of the telescope the open...
Страница 5: ...Telescope 1 35m Magnification 9mm EP 139x 30mm EP 42x GS980 Focal Length 1500mm Focal Ratio f 5 Aperture 303mm Weight Telescope 22kg Base 14kg Length Telescope 1 45m Magnification 9mm EP 167x 30mm EP...
Страница 6: ...Base Sides 2 F Handle and screws B Base Front G Feet and screws 3 C Upper Base Plates H Long Screws 10 D Lower Base Plate I Eyepiece Tray and screws E Bearing Plates 3 J Adjustment Bolt wih large and...
Страница 7: ...late over onto its feet and insert the metal bushing sleeve from the Adjustment Bolt into the centre hole Step 6 Place the Bearing Plates E onto the bushing ensurung they are kept in the correct order...
Страница 8: ...alance the optical tube particuarly if you use any heavy accessories Nor mally these should be in the centre taking care that the bearings on each side should be adjusted the same The U Shaped blocks...
Страница 9: ...e on the optical tube and install the find erscope bracket tighten ing the screw to hold it in place Loosen the two plastic adjusting screws on the finder scope base and slide the finder scope eye pie...
Страница 10: ...focus knobs C D will not move the focuser In operation the sliver focus knob C will allow you to roughly focus the eypiece whilst the black knob D moves more slowly and will allow fine focus approxim...
Страница 11: ...the centre of the field of view such as the top of the pylon in the image to the right Next use the finder and see if the same object is in the centre of the field of view In the case of the finder sc...
Страница 12: ...view for at least 30 60 min utes to allow all components to come to equilibrium Using the supplied battery holder to power the fan on the base of the mirror can help cool the mirror faster If the ima...
Страница 13: ...an Telescope is a precision scientific instrument great care should be taken in order to maintain the optics and alignment Cleaning of any part of the telescope should be undertaken a little as possib...
Страница 14: ...14...
