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One-Year Limited Warranty

This Orion SkyView Pro 127mm EQ is warranted against defects in materials or workmanship
for a period of one year from the date of purchase. This warranty is for the benefit of the original
retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or
replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is
returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. If the
product is not registered, proof of purchase (such as a copy of the original invoice) is required.

This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishan-
dled, or modified, nor does it apply to normal wear and tear. This warranty gives you specific
legal rights, and you may also have other rights, which vary from state to state. For further war-
ranty service information, contact: Customer Service Department, Orion Telescopes &
Binoculars, P. O. Box 1815, Santa Cruz, CA 95061; (800) 676-1343.

Orion Telescopes & Binoculars

Post Office Box 1815, Santa Cruz, CA 95061

Customer Support Help Line (800) 676-1343 • Day or Evening

Summary of Contents for SkyView Pro 127mm EQ 9877

Page 1: ...ng Exceptional Consumer Optical Products Since 1975 Customer Support 800 676 1343 E mail support telescope com Corporate Offices 831 763 7000 P O Box 1815 Santa Cruz CA 95061 Orion SkyView Pro 127mm EQ 9877 Equatorial Maksutov Cassegrain Telescope ...

Page 2: ...rew Mounting plate securing knob Counterweight shaft Counterweights Counterweight lock knobs Tripod leg Finder scope Finder scope bracket Eyepiece Star diagonal Focus knob not shown Right ascension slow motion control knob Right ascension axis rear cover Latitude scale Latitude adjustment L bolts Center support shaft Tripod support tray Optical tube Leg lock knobs ...

Page 3: ...minutes No tools are needed other than the ones provid ed All screws should be tightened securely but be careful not to over tighten or the threads may strip Refer to Figure 1 dur ing the assembly process During assembly and anytime for that matter do not touch the surfaces of the telescope s front meniscus lens or the lenses of the finder scope or eyepieces with your fingers The optical surfaces ...

Page 4: ... the casting is flush with the mount 7 Remove the knurled toe saver retaining screw on the bottom of the counterweight shaft and slide both counter weights onto the shaft Make sure the counterweight lock knobs are adequately loosened to allow the counterweight shaft to pass through the hole Position the counterweights about halfway up the shaft and tighten the lock knobs Replace the toe saver at t...

Page 5: ...xactly counterbalance the telescope Figure 4a That s the point at which the shaft remains horizontal even when you let go of the tele scope with both hands Figure 4b 3 Retighten the counterweight lock lever Loosen the metal safety thumbscrew on the top of the equa torial mount Then with one hand on the optical tube loosen the mounting plate securing knob Figure 4c Slide the mounting plate along th...

Page 6: ...needed until the object comes into the finder scope s field of view With the image in the finder scope s field of view you now need to fine adjust the alignment thumbscrews to center the object on the intersection of the crosshairs Adjust the aim of the finder scope by turning the thumbscrews one at a time until the object is centered The finder scope alignment needs to be checked before every obs...

Page 7: ...ck the movement of astronomical objects thereby keeping them from drifting out of your telescope s field of view while you re observing This is accomplished by slowly rotating the telescope on its right ascension axis using only the R A slow motion knob But first the R A axis of the mount must be aligned with the Earth s rotational polar axis a process called polar alignment Polar Alignment For No...

Page 8: ...and easy to do To install the polar axis finder scope remove the cover at the rear of the mount s right ascension axis Figure 9 and thread the polar axis finder scope into the equatorial mount until tight The reticle of the polar axis finder scope for the SkyView Pro has a tiny star map printed on it that makes precise polar alignment quick and easy If you do not have a clear view of Polaris from ...

Page 9: ...atitude of the mount nor should you move the tri pod Doing so will undo the polar alignment The tele scope should be moved only about its right ascension and declination axes Additional Note Regarding Focusing the Polar Axis Finder Scope The polar axis finder scope is normally focused by simply rotating the eyepiece focus ring However if after adjusting the focus ring you find that the image of th...

Page 10: ...n so it is parallel to the R A axis as shown in Figure 1 Re tighten the lock lever 2 Loosen one of the thumbscrews on the Dec setting circle this will allow the setting circle to rotate freely Rotate the Dec setting circle until the pointer reads exactly 90 Re tighten the setting circle thumbscrew Calibrating the Right Ascension Setting Circle 1 Identify a bright star in the sky near the celestial...

Page 11: ...way from street lights and bright yard lighting Avoid viewing over rooftops and chimneys as they often have warm air currents rising from them which distort the image seen in the eyepiece Similarly you should not observe through an open window from indoors Better yet choose a site out of town away from any light pollution You ll be stunned at how many more stars you ll see Most importantly make su...

Page 12: ...piece to use depending on the object being viewed At least to begin with the two sup plied eyepieces will suffice nicely Whatever you choose to view always start by inserting your lowest power longest focal length eyepiece to locate and center the object Low magnification yields a wide field of view which shows a larger area of sky in the eyepiece This makes acquiring and centering an object much ...

Page 13: ...n the sky excluding the Sun and the Moon It is so bright that sometimes it is visible to the naked eye during full daylight Ironically Venus appears as a thin crescent not a full disk when at its peak brightness Because it is so close to the Sun it never wanders too far from the morning or evening horizon No surface markings can be seen on Venus which is always shrouded in dense clouds MARS The Re...

Page 14: ...iewing angle and better resolution is not optimal for land viewing because it inverts images from left to right We recommend purchasing an optional 45 correct image diagonal for terrestrial observing it provides a more comfortable viewing angle for land viewing and an image that is oriented the same as the naked eye In addition an optional correct image finder scope will be useful for aiming the o...

Page 15: ... clean the telescope s meniscus lens or the exposed lenses of your eyepieces and finder scope Never use regular glass cleaner or cleaning fluid designed for eyeglasses Before cleaning with fluid and tissue however blow any loose particles off the lens with a blower bulb or compressed air Then apply some cleaning fluid to a tissue never directly on the optics Wipe the lens gently in a circular moti...

Page 16: ...Way Watsonville CA 95076 If the product is not registered proof of purchase such as a copy of the original invoice is required This warranty does not apply if in Orion s judgment the instrument has been abused mishan dled or modified nor does it apply to normal wear and tear This warranty gives you specific legal rights and you may also have other rights which vary from state to state For further ...

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