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Figure 1.
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Parts included with the Orion Observer EQ telescopes.
B)
Optical tube assemblies of the Observer EQ telescopes.
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Page 1: ...ion or any of its contents may be reproduced copied modified or adapted without the prior written consent of Orion Telescopes Binoculars A N E M P L O Y E E O W N E D C O M P A N Y 52988 52986 52987 C...
Page 2: ...lternatively you could thread on the shaft first and then slide the counterweight onto it after removing the hex head bolt and washer from the bottom end of the shaft 5 Attach the slow motion cables J...
Page 3: ...3 Figure 1 A Parts included with the Orion Observer EQ telescopes B Optical tube assemblies of the Observer EQ telescopes H P I E F K L A B C G J M D Q O N O A B...
Page 4: ...he telescope For larger telescope move ment release the RA and Dec axis lock knobs Figure 16 and move the telescope tube by hand to the approximate location then retighten the lock knobs and make fine...
Page 5: ...adjustments to the alignment thumbscrews until the image in both the finder scope and the telescope s eye piece is exactly centered When it is no further adjustment of the finder scope will be needed...
Page 6: ...ng the shaft until it exactly counterbalances the telescope That s the point at which the shaft remains horizontal even when you let go of the telescope with both hands 3 Retighten the counterweight l...
Page 7: ...ccomplished by slowly rotating the telescope on its right ascension R A axis using only the R A slow motion cable But first the R A axis of the mount must be aligned with the Earth s rotational polar...
Page 8: ...ot make any further adjustments to the azimuth or the latitude of the mount nor should you move the tripod Doing so will ruin the polar alignment The telescope should be moved only about its R A and D...
Page 9: ...object through the telescope you ll see it drift slowly across the field of view To keep it in the field assuming the equatorial mount is polar aligned just turn the R A Figure 16 The R A and Dec loc...
Page 10: ...in the Northern Hemisphere The Dec setting circle is denoted in degrees with each main mark representing 10 increments 1 10 2 20 etc Values of Dec coordinates range from 90 to 90 The 0 mark indi cates...
Page 11: ...ng circles are not accurate enough to put an object dead center in the telescope s eyepiece but they should place the object somewhere within or near the field of view of the finder scope assuming the...
Page 12: ...r that mat ter Your eyes take about 30 minutes to reach perhaps 80 of their full dark adapted sensitivity As your eyes become dark adapted more stars will glimmer into view and you ll be able to see f...
Page 13: ...nt size optional higher power eyepieces or a Barlow lens are recommended and often needed for detailed obser vations B The Sun You can change your nighttime telescope into a daytime Sun viewer by inst...
Page 14: ...and error to determine which screws to loosen and tighten to move the reflection of the primary mirror to the center of the secondary mirror But be patient and you ll get it Aligning the Primary Mirr...
Page 15: ...me with your telescope Motor Drive A motor drive which attaches to the right ascension axis of an equatorial telescope mount enables your telescope to track the motion of stars and other celestial obj...
Page 16: ...German equatorial Tripod Aluminum Total instrument weight 16 lbs 1 5 oz Observer 134mm EQ Reflector Primary mirror diameter 134mm 5 3 Primary mirror coating Aluminum with silicon dioxide SiO2 overcoat...
