Levenhuk Skyline PRO 90 MAK User Manual
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Summary of Contents for Levenhuk Skyline PRO 90 MAK
- Page 1 User Guide Telescopes Levenhuk Skyline PRO 90 MAK Levenhuk Skyline PRO 105 MAK Levenhuk Skyline PRO 127 MAK Levenhuk Skyline PRO 130 EQ Levenhuk Skyline PRO 150 EQ...
- Page 2 Congratulations! Congratulations on your purchase of high-quality Levenhuk telescope! These telescopes are designed for high-resolution viewing of astronomical objects. With their precision optics, you will be able to locate and enjoy hundreds of fascinating celestial objects, including the planets, the Moon, and a variety of deep-sky galaxies, nebulas, and star clusters.
- Page 3 Refractor with the EQ3-2 mount Dust cap Dec. slow-motion control В. Dew cap R.A. lock knob С. Objective lens Polarscope holder Telescope tube Altitude adjustment T-bolt Е. Piggyback bracket Counterweight rod Finderscope Counterweight Finderscope bracket Counterweight lock screw Adjustment screws Azimuth adjustment knob Eyepiece Dec.
- Page 4 Refractor with the EQ5 mount Polarscope holder Tripod leg Altitude adjustment T-bolt Dust cap Azimuth adjustment knob В. Dew cap Counterweight rod С. Objective lens Counterweight Telescope tube Counterweight lock screw Е. Piggyback bracket R.A. adjustment knob Finderscope R.A. lock knob Finderscope bracket Dec.
- Page 5 Reflector with the EQ3-2 mount Dust cap R.A. lock knob В. Focuser tube Polarscope holder С. Finderscope Altitude adjustment T-bolt Finderscope bracket Counterweight rod Е. Adjustment screws Counterweight Eyepiece Counterweight lock screw Focusing knob Azimuth adjustment knob Piggyback bracket Dec. lock knob Telescope tube Ring clamps Primary mirror...
- Page 6 Reflector with the EQ5 mount Mounting plate Accessory tray R.A. slow-motion control Tripod leg Polarscope holder Dust cap В. Altitude adjustment T-bolt Focuser tube С. Azimuth adjustment knob Finderscope Counterweight Finderscope bracket Counterweight lock screw Е. Adjustment screws Counterweight rod Eyepiece R.A.
- Page 7 Maksutov telescope with the EQ5 mount Altitude adjustment T-bolt Dust cap Azimuth adjustment knob В. Finderscope С. Counterweight lock screw Focuser lock screw Counterweight rod Eyepiece Е. Dec. lock knob Diagonal mirror Dec. setting circle Focusing knob Tripod leg R.A. lock knob Accessory tray Dec.
- Page 8 Telescope assembly with the EQ3-2 mount Telescope and mount assembly Slowly loosen the tripod locking knobs and gently pull out the lower section of each tripod leg. Tighten the clamps to hold the legs in place. Spread the tripod legs apart to stand the tripod upright.
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Page 9: Finderscope Assembly
Remove the telescope tube from its packaging. Remove the ring clamps by releasing their thumbscrews and opening their hinges. Using the bolts provided, fasten the ring clamps to the mount with a wrench. Place the telescope tube between the rings and balance it. Close the hinges around the telescope and retighten the thumbscrews. -
Page 10: Eyepiece Assembly
Eyepiece assembly For reflectors: Unthread the thumbscrews on the focuser tube to remove the black plastic cap. Insert the desired eyepiece and secure it by retightening the thumbscrews. For refractors and Maksutov telescopes: Unthread the thumbscrews on the focuser tube. Insert the diagonal mirror into the focuser tube and secure it by retightening the thumbscrews. - Page 11 Take the counterweight rod. Screw the counterweight rod into the threaded hole on the end of the declination shaft. Unscrew the threaded cap from the end of the counterweight rod. Take the counterweight(s) and slide them halfway along the counterweight rod. Tighten the counterweight thumbscrews.
- Page 12 For refractors: Take the finderscope bracket. Carefully remove the rubber ring. Place the ring on the finderscope and position it into the groove halfway along the tube. Insert the finderscope bracket into a holder on the telescope tube and lock it in place with a thumbscrew.
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Page 13: Operating The Telescope
Operating the telescope Optical finderscope Optical finderscopes are very useful accessories. When they are correctly aligned with the telescope, objects can be quickly located and brought to the center of the view. Alignment is best done outdoors in day light when it's easier to locate objects. If it is necessary to refocus your finderscope, sight it on an object that is at least 500 yards away. -
Page 14: Balancing The Telescope
Scope Azimuth adjustment knob Brightness control Altitude adjustment knob Battery compartment cover Like all finderscopes, the red dot finder must be properly aligned with the telescope before use. This is a simple process using the azimuth and altitude adjustment knobs. Open the battery compartment by pulling down the cover and remove the plastic shipping cover over the battery. - Page 15 Dec. balancing All accessories should be attached to the telescope before balancing around the declination axis. The R.A. balancing should be done before proceeding with Dec. balancing. For best results, adjust the altitude of the mount to between 60º and 75º if possible. Release the R.A.
- Page 16 Barlow lens Barlow lens A Barlow lens increases the magnifying power of an eyepiece, while reducing the field of view. It expands the cone of the focused light before it reaches the focal point, so that the telescope's focal length appears longer to the eyepiece. In addition to increasing magnification, the benefits of using a Barlow lens include improved eye relief, and reduced spherical aberration of the eyepiece.
- Page 17 Look up your latitude on a map, road maps are good for this purpose. Now look at the side of your mount head, there you will see a scale running from 0 to 90°. Loosen the mount latch slightly rotating the lock handle counterclockwise.
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Page 18: Tracking Celestial Objects
Tracking celestial objects When observing through a telescope, astronomical objects appear to move slowly through the telescope's field of view. When the mount is correctly polar aligned, you only need to turn the R.A. slow-motion control to follow or track objects as they move through the field. A R.A. motor drive can be added to automatically track celestial objects by counteracting the rotation of Earth. - Page 19 Example: Finding the faint planetary nebula M57; "The Ring” From a star chart, we know the coordinates of the Ring are Dec. 33º and R.A. 18h52m. Unlock the Dec. lock knob and rotate your telescope in Dec. until the pointer on the Dec. setting circle reads 33º.
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Page 20: Pointing Your Telescope
Pointing your telescope A German Equatorial mount has an adjustment, sometimes called a wedge, which tilts the mount's polar axis so that it points at the appropriate Celestial Pole (NCP or SCP). Once the mount has been polar aligned, it needs to be rotated around the polar axis only to keep an object centered. - Page 21 Pointing at an object, for example to the South, can often be achieved with the tube positioned on either side of the mount. When there is a choice of sides, particularly when there could be a long observing period, the East side should be chosen in the Northern Hemisphere because tracking in R.A.
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Page 22: Choosing The Appropriate Eyepiece
Choosing the appropriate eyepiece The magnification produced by a telescope is determined by the focal length of the eyepiece that is used with it. To determine a magnification for your telescope, divide its focal length by the focal length of the eyepieces you are going to use. For example, a 10 mm focal length eyepiece will give 80x magnification with an 800 mm focal length telescope. - Page 23 For example, a 200 mm telescope with an 8 mm eyepiece produces a magnification of 25x and an exit pupil of 8mm. This combination can probably be used by a younger person but would not be of much value to a senior citizen. The same telescope used with a 6 mm eyepiece gives a magnification of about 33x and an exit pupil of 6 mm, which should be fine for most dark adapted eyes.
- Page 24 Collimation Collimation is the process of aligning the mirrors of your telescope so that they work together to deliver properly focused light to your eyepiece. By observing out-of-focus star images, you can test whether the optics of your telescope are aligned. Place a star in the center of the field of view and move the focuser so that the image is slightly out of focus.
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Page 25: Aligning The Secondary Mirror
The secondary mirror is aligned by adjusting the three smaller screws surrounding the central bolt. The primary mirror is adjusted by the three adjusting screws at the back of your scope. The three locking screws beside them serve to hold the mirror in place after collimation. Primary mirror Mirror cell Locking screw... -
Page 26: Camera Adapter
If you see 6 Phillips screws but 3 protruding from the back of your telescope, the 3 protruding screws are locking screws and the ones next to them are adjusting screws. If you see 3 hex bolts and 3 Phillips screws, the hex bolts are the locking bolts and the Phillips screws are the adjusting screws. -
Page 27: Maintenance
Replace the dust cap over the front end of the telescope whenever it is not in use. This prevents dust from settling on the mirror or lens surfaces. Be careful when cleaning optics and try not to damage the coating. Use only special cleaning wipes. Specification Specifications Levenhuk Skyline PRO 90 MAK Optical design Maksutov-Cassegrain Aperture 90 mm Focal length 1250 mm;... - Page 28 Levenhuk Skyline PRO 130 EQ Optical design Newtonian reflector Aperture 130 mm 650 mm; f/5 Focal length Highest practical power 260x Limiting stellar magnitude 13.3 0.9 arcsec. Resolution threshold Eyepiece 1.25" & 2" (with an adapter); SUPER10 & SUPER20 6x30, red dot finder...
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Page 29: Warranty
Levenhuk Ltd. warrants the product against defects in materials. During the warranty period the Buyer can return the defect product to the Vendor or to Levenhuk service center. Levenhuk Ltd. will repair or replace the defect product at its own discretion. - Page 30 Planisphere Levenhuk M20 / Levenhuk M12 If you cannot fall asleep at night, seeing the starry sky outside, and visions of not so distant universe trouble your mind at times, we have just the thing for you. The Planisphere will help you determine the current position of stars in the sky on any given day and at any time.
- Page 31 Ever wondered what is the size of the Sun? How many expeditions there were to the Moon? What will happen to the Sun in 8 billion years? Levenhuk® Space posters answer these and many other questions. Each poster provides you with visual and nicely arranged blocks of trivia on planets, stars and satellites proportions, as well as weight, age, composition and formation history of each star.
- Page 32 Levenhuk Accessories Levenhuk optics cleaning tools The Levenhuk series of cleaning tools is all you need to keep your optics clean and durable and to maintain its excellent quality. Developed and manufactured for Levenhuk, Ltd. Long Island City, NY 11101 USA.
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