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Summary of Contents for Zhumell Tycho
- Page 1 YCHO...
- Page 2 Zhumell tele- scope. We also have more information available on our website at www.zhumell.com. Please let us know about your experiences with your Zhumell telescope. We would like to hear your feed- back and see your astrophotographs. Enjoy your Zhumell.
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Page 3: Specifications
PECIFICATIONS PTICAL Highest Useful Magnification 600x Limiting Magnitude (Visual) 14.52 Limiting Magnitude (Photographic) 12.52 OUNT R.A. Adjustment Manual Worm Gear Dec. Adjustment Manual Worm Gear Clock Drive Axis R.A. and Dec. Clock Drive Power 4 - D-cell Batteries NCLUDED TEMS •Optical Tube Assembly •8x50 Finderscope •EQ5 Equitorial Mount... - Page 4 ELE SCOPE E GE ND 1. Tripod 2. Mount Assembly 3. Optical Tube Assembly 4. Eyepiece 5. Finderscope 6. Optical Tube Mounting Belt 7 . Focuser 8. Primary Mirror 9. Dec. Adjustment Knob 10. Dec. Axis Release 11. Declination Scale 12.
- Page 5 ELE SCOPE A telescope is carefully aligned during construction and great care should be taken to maintain this alignment over the life of the telescope. Cleaning should be done as little as possible and then only with a mild soap solution and soft, lint-free cloth.
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Page 6: Tele Scope Assembly
Separate tripod legs and ensure that the legs are extended to equal heights. The top of the tripod should be level to ensure stability when mounting telescope. 2. Remove accessory tray mounting screw at the center of tripod leg crossbracce. Set acces-... - Page 7 5. Loosen R.A. and Dec. axes by turning axis release levers 180°. Position mount so that Dec. axis is at 0° and R.A. Axis is at 0, then re-tighten the axis release levers. The mount should now vertically level. With the mount in this vertical position, find the counter-weight shaft socket located at the end of the Dec.
- Page 8 11. Loosen finderscope mounting screws until finderscope can be easily slid into the mount. Slide finderscope into the mount and retighten mounting screws so that finderscope is approximately aligned with the telescope.
- Page 9 When placing the optical tube assembly into the mounting rings, center the rings along the length of the optical tube assembly. Centering the rings along the length of the optical tube assembly will help to keep the telescope bal- anced and increase overall stability of the telescope.
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Page 10: Hand Controller
LOCK RIVE ONNECTING THE To use the clock drive, connect the havd controller by plugging the Motor Connection Cord into the receptacle at the base of the plastic housing on the R.A. drive of the mount. Place 4 D-cell batteries into the battery pack and plug the power cord from the battery pack into the Battery Pack Connection receptacle in on the hand controller. - Page 11 Stars appear to move very slowly and the telescope may not apear to move over a short period of time. To see if your clock drive is working, aim the telescope at a stationary terrestrial object and engage the clock drive.
- Page 12 Use of the fi nderscope will help locate celestial objects more quickly as the fi nderscope has a much wider fi eld of view than the telescope. When view- ing, start with the lowest power magnifi cation and work up to the desired magnifi...
- Page 13 To point the telescope at the moon, loosen the R.A. and Dec. clamps (the thumbscrews located nearest the Hour Circle and Declination Circle on the mount), then gently move the optical tube assembly until it points at the moon.
- Page 14 OL AR L IGNME NT OF YOU R Polar alignment of your telescope uses easy to find stars to help you find the center of the celestial sphere. Before aligning your telescope, you must familiarize yourself with some of the major constellations in the night sky.
- Page 15 (labelled with an N ). Turn the telescope, tripod and all, so that the front of the mount faces north. You can use a compass to find magnetic north and...
- Page 16 Star Drift alignment is more precise than polar star alignment, but may also prove to be more difficult to those not used to aligning a telescope. Once you polar align using the star drift method a few times, it becomes easier, but the first few times may take a considerable amount of time.
- Page 17 2. Find a bright star in the viewfinder of your telescope and use the R.A. and Dec. adjustment cables to center it in the crosshairs. Work up to your most powerful eyepiece, centering the star in the viewfinder each time you replace the eyepiece.
- Page 18 (12 hours in Right Ascension) until the finder is on the opposite side of the telescope. If the optical axis of the finder is parallel to the polar axis of the mount, then Polaris will not have moved in relation to the finderscope’s crosshairs.
- Page 19 3 and 1/3 of that equals 1 ). This calculation can be ap- proximated for any finderscope with a known field of view. 2. Loosen the R.A. and Dec. axis clamps and aim the telescope at a star near the celestial equator with known right ascension. Be careful not to move the mount base or tripod while moving the optical tube.
- Page 20 IND ING ELE STIAL Once your telescope is polar aligned, you must set the hour circle in order to use the measurements listed on the mount to find celestial objects. Once the hour circle is properly set, you will be able to use the coordinates listed on star charts to find objects for viewing in the night sky.
- Page 21 Magnification = 900mm/20mm Magnification = 45x Focal Ratio To determine the focal ratio of a telescope, divide the focal length of the telescope by the aperture. Focal Ratio (F/x)= Telescope Focal Length (mm)/Aperture (mm) Ex: Focal Ratio of a 70x900mm telescope.
- Page 22 ISTAN CE tube aiming at one object must be turned in order to aim at the another object. If you must rotate the telescope from the zenith to the horizon, the angular distance between the two points would be 90 .
- Page 23 - The objective is the front lens of a telescope. The measurement listed for objec- BJECTIVE tive lenses is the diameter of the lens. A larger objective allows more light to enter a telescope and provides a brighter image. The objective diameter is also sometimes referred to as the aperature of a telescope.
- Page 24 Refractor Telescopes Refractor Light Path Diagram Advantages •Easy to use and reliable design •Little or no maintenance required •High contrast images •N o secondary or diagonal obstruc- tion •Sealed optical tube reduces air cur- rents which can degrade images •Objective lens permanently mounted and aligned Advantages: •Least expensive per inch of aperture...
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Page 25: Image Orientation
Reflector telescopes use a series of mirrors to bring light to focus at the eyepiece, which extrudes from the side of the telescope tube. Light enters the open objective end of the tube and is then bounced off of a parabolic mirror toward the secondary mirror. The secondary mirror redirects the light out of the side of the tube toward the eyepiece. - Page 26 To obtain warranty service the damaged Zhumell must be returned to Zhumell along with $25 to cover shipping and handling. When you return your Zhumell to us please send a letter that explains the problem. This is important. Sometimes the problem is obvious as when we open a box and the pieces fall out.
- Page 27 STRONOM ICAL EF RACTOR 60x350 Ion 60x600 Zenith Aurora 70 Kepler 152 EFLE CTOR Eclipse 114 Tycho 254 STRONOM ICAL 20x80 Super Giant 25x100 Tachyon ELE SCOPE L OSSL 1.25“ 3.6mm Super Plössl 1.25“ 6.3mm Super Plössl 1.25“ 10mm Super Plössl 1.25“...
- Page 28 Please enjoy your Zhumell telescope. If you have any questions, comments, or stories about expe- riences with your Zhumell telescope, we would like to hear them. We are confident that you will be pleased with your new Zhumells and hope to hear from you soon.
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