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OR6000 Series 

 

4.5” Reflector Telescope 

(Model 7500) 

 

 

 
 

Instructions  

and 

Owner’s Manual 

 

 

 

 

Made in China 

                                                                  

 

Manual Part # 262504 

Revised September 2003 

Summary of Contents for Orbitor OR6000 Series

Page 1: ...OR6000 Series 4 5 Reflector Telescope Model 7500 Instructions and Owner s Manual Made in China Manual Part 262504 Revised September 2003 ...

Page 2: ...Finder scope and bracket B Slow motion controls 2 C Equatorial motor D Battery pack cord E Counterweight shaft F Tripod leg bolts 3 G Tripod leg brace hub H Tripod leg brace bolts I Equatorial mount assembly with cradle rings attached J Counterweight K Accessory tray L Accessory tray screws 3 M 2X Barlow lens N Eyepieces 2 O Optical tube P Tripod leg 3 Parts of your new telescope A B C D E F G H I...

Page 3: ...elescope please read this manual carefully and completely FOR MORE INFORMATION AND ANSWERS TO ANY QUESTIONS PLEASE GO TO OUR WEBSITE www citiwellint com NOTE When you remove the cradle rings and the protective plastic bag from the telescope tube there may be a residue on the tube To remove this residue use a warm soapy cloth and carefully clean the area being careful not to let water enter the tub...

Page 4: ...Figure 2b Then attach each leg to the equatorial mount assembly with supplied tripod leg bolts and wing nuts See Fig 2 Note that some telescopes may have round plastic tighteners in place of wing nuts Fig 2a Fig 2b Fig 2c 4 Locate the tray attachment bolt Fig 3 Dis assemble it as shown in Figure 3a by turning the round knob counter clockwise Insert the chrome shaft upward through the center of the...

Page 5: ...Fig 7 7 The counterweight balances your telescope and makes it easy to adjust and position Hold the counterweight in your hand so you can see through the hole in the weight Make sure that the black tightening knob on the counterweight is facing down If when you look through the counterweight you see that the hole is blocked by a small metal rod slowly turn the tightening knob counterclockwise to l...

Page 6: ...l it is tight against the flat side of the right ascension shaft Attach the other slow motion control to the declination shaft as shown in Fig 13 and tighten it into position Fig 14 shows the completed assembly Fig 12 Fig 13 Fig 14 10 Remove the finder scope with attached bracket from the box Slide the finder scope bracket into the finder scope base on the telescope See Fig 15 Apply a gentle press...

Page 7: ...rlow lens between the eyepiece and the focusing tube See Fig 18 Fig 18 13 The equatorial motor supplied with the OR7500 is designed to provide accurate tracking of celestial objects along the RA Right Ascension axis thereby reducing the need for making constant manual readjustments in order to follow and keep a subject in view Attach the motor to the mount assembly by first attaching one end of th...

Page 8: ...nnect the motor to the RA axis of the telescope s equatorial mount and begin motorized tracking Move the lever to the disengaged position See Fig 23 to disconnect the motor and stop motorized tracking THE MOTOR MUST BE DIS ENGAGED BEFORE MANUALLY ADJUSTING THE R A AXIS SLOW MOTION CONTROL Fig 22 Fig 23 16 The motor is powered by 4 D size batteries housed in the battery pack supplied with your OR75...

Page 9: ...the three small adjusting screws holding the finder scope and reposition the finder scope until the object is centered within the X shaped crosshairs 4 All screws should be completely tightened as soon as the view through the finder scope coincides with the view of the main telescope 5 This procedure may need to be repeated to ensure a perfect alignment THE EQUATORIAL MOUNT The advanced precision ...

Page 10: ...g area slowly turn the slow motion cable extending from the left side of the telescope until the object is centered again If your setup was not accurate you will notice that the subject is moving very slowly either up or down A slight turn of the declination slow motion control knob extending from the back of the telescope will counteract this slight error See Fig 13 FOR A MORE COMPLETE EXPLANATIO...

Page 11: ...ally curved mirror known as the primary mirror The focused image is reflected back up the tube to a small flat mirror near the open tube end called the secondary mirror This secondary mirror reflects the focused image out through the side of the telescope tube to the eyepiece holder where it is enlarged for viewing through the eyepiece The primary mirror is a precision ground and polished componen...

Page 12: ...r telescope inside remove the dust caps and allow the moisture to evaporate naturally Point the telescope downward to minimize the collection of airborne dust Once all of the moisture has evaporated replace the dust caps CARE AND CLEANING OF OPTICS Optical components of a telescope get dirty over time Dirt or dust on a lens should be removed with the utmost care A considerable amount of dirt or du...

Page 13: ...to giant gas balls which could hold Earth 1 000 times over To find the planets you will need information about their times of visibility An astronomy magazine will give you the locations of the planets as they change position from month to month The Internet is also an excellent source of information offering star charts maps and more The popular and more familiar constellations often provide the ...

Page 14: ...our solar system there are many more objects to be found Galaxies nebulae and star clusters abound FREQUENTLY ASKED QUESTIONS 1 How far can I see If you stand outside and look up at the night sky on a clear evening you can see hundreds of stars without the aid of your telescope The telescope is a light gathering instrument that magnifies the view providing significantly more detail and unveiling m...

Page 15: ...as though they are moving across the viewing area The equatorial mount provided with your telescope compensates for this by moving the main optical tube in a circular fashion allowing you to follow and study celestial objects with a minumium of manual adjusting If you would like to reduce this effect of movement to a minimum and observe the widest field of view you should use lower power eyepieces...

Page 16: ...set the small slide switch to the ON position and disengage the clutch as described in your manual To switch to the ELECTRONIC control function you can turn the MANUAL control function off by engaging the clutch and setting the switch to the OFF position A green light will indicate that the motor is working properly If the green light does not light up it is probably an indication that the batteri...

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