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Congratulations on your purchase of a Celestron equatorial refractor telescope.  This telescope is a precision 
scientific instrument that will allow you to enjoy viewing numerous objects in the night sky — planets, nebulae, star 
clusters, galaxies and more. 
 
Before embarking upon an exploration of the sky, please take time to read this manual and familiarize yourself with 
both the parts and operation of your telescope. 
 

WARNING 
 
NEVER LOOK DIRECTLY AT THE SUN WITH THE NAKED EYE OR WITH A TELESCOPE.  NEVER 
POINT YOUR TELESCOPE AT THE SUN UNLESS YOU ARE USING THE PROPER SOLAR FILTER.  
PERMANENT AND IRREVERSIBLE EYE DAMAGE MAY RESULT. 
 
NEVER USE YOUR TELESCOPE TO PROJECT AN IMAGE OF THE SUN ONTO ANY SURFACE. 
INTERNAL HEAT BUILD UP CAN DAMAGE THE TELESCOPE AND/OR ANY ACCESSORIES THAT 
MAY BE ATTACHED TO IT. 
 
NEVER LEAVE YOUR TELESCOPE UNSUPERVISED, ESPECIALLY WHEN CHILDREN ARE 
PRESENT.  THIS ALSO HOLDS TRUE FOR ADULTS WHO MAY NOT BE FAMILIAR WITH THE 
CORRECT OPERATING PROCEDURES FOR YOUR TELESCOPE. 
 
NEVER USE AN EYEPIECE SOLAR FILTER OR A HERSCHEL WEDGE.  INTERNAL HEAT BUILD 
UP WITHIN THE TELESCOPE CAN CAUSE THESE DEVICES TO CRACK, BREAK OR DAMAGE 
YOUR TELESCOPE.  ANY SOLAR FILTER USED SHOULD BE A FILTER FOR THE PRIMARY OR 
OBJECTIVE LENS, SUCH AS CELESTRON’S ASTROSOLAR FILTER. 
 
ALWAYS COVER THE FINDERSCOPE WHEN USING YOUR TELESCOPE WITH THE CORRECT 
SOLAR FILTER.  ALTHOUGH SMALL IN APERTURE, THIS INSTRUMENT HAS ENOUGH LIGHT 
GATHERING POWER TO CAUSE PERMANENT AND IRREVERSIBLE EYE DAMAGE.  THE IMAGE 
PROJECTED BY THE FINDERSCOPE IS HOT ENOUGH TO BURN SKIN OR CLOTHING. 

 

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The Firstscope comes packed in one box, with all the parts you need to assemble it.  Unpack and lay out all of the 
telescope parts in a large, clear area where you’ll have room to work.  Use the parts list and the telescope diagram to 
confirm you have, and can identify each part.  The parts you’ll unpack include:    
 
 

ALL TELESCOPES INCLUDE 

 

 • 

Telescope 

Optical 

Tube 

    

 

• German Equatorial Mount 

 

• Adjustable Tripod  

 

• Star Pointer Finderscope and Bracket  

 

• Counterweight and Shaft 

 

• Tripod Accessory Tray 

 

• Declination Cable 

 

• Right Ascension Cable 

 

• Star Diagonal 
• 

The Sky

® CD-ROM 

• 20mm 1¼" eyepiece 
• 10mm 1¼" eyepiece 
 

 

Summary of Contents for 21067

Page 1: ...A AC CT TO OR RS S MODELS 21067 F FI IR RS ST TS SC CO OP PE E 7 70 0 E EQ Q R RE EF FR RA AC CT TO OR R MODEL 21076 F FI IR RS ST TS SC CO OP PE E 8 80 0 E EQ Q R RE EF FR RA AC CT TO OR RS S MODELS 21086 I IN NS ST TR RU UC CT TI IO ON N M MA AN NU UA AL L ...

Page 2: ...3 FIRSTSCOPE EQ REFRACTORS FIGURE 1 ...

Page 3: ...yepiece 25 Declination setting circle 8 Tripod leg adjusting screw 26 Front lens cover 9 Focusing knob 27 Right ascension cable holder 10 Rack and pinion focuser 28 Horizontal adjustment knob 11 Telescope optical tube 29 Counterweight shaft 12 Tube mounting plate and bolts 30 Counterweight 13 Declination cable holder 31 Right ascension cable 14 Safety washer for counterweight 32 Tripod accessory t...

Page 4: ... YOUR TELESCOPE NEVER USE AN EYEPIECE SOLAR FILTER OR A HERSCHEL WEDGE INTERNAL HEAT BUILD UP WITHIN THE TELESCOPE CAN CAUSE THESE DEVICES TO CRACK BREAK OR DAMAGE YOUR TELESCOPE ANY SOLAR FILTER USED SHOULD BE A FILTER FOR THE PRIMARY OR OBJECTIVE LENS SUCH AS CELESTRON S ASTROSOLAR FILTER ALWAYS COVER THE FINDERSCOPE WHEN USING YOUR TELESCOPE WITH THE CORRECT SOLAR FILTER ALTHOUGH SMALL IN APERT...

Page 5: ...ng the legs apart far enough for the tripod accessory tray to fit 2 You are now ready to install the tripod accessory tray The tripod tray fits over the holes in the tripod leg brace Insert the winged bolts through the holes in the bottom of the tripod leg brace and thread them into the holes in the accessory tray Tighten all bolts to ensure proper stability to the mount For the Firstscope 60 mode...

Page 6: ...ce 2 Slide the rings apart so that each is at the same distance as the holes in the mounting platform 3 Place the telescope tube on the mount so that the flat portion of the tube rings rest on the mounting platform 4 Align the holes on the square extrusions with the holes at the ends of the mounting platform 5 Starting with the ring closest to the objective lens end of the tube insert the bolt thr...

Page 7: ...l to the desired position and tighten the thumbscrew T TE EL LE ES SC CO OP PE E O OP PE ER RA AT TI IO ON N G GE ET TT TI IN NG G S SE ET T U UP P Setting Latitude Loosen the polar axis knob 16 with one hand while holding the equatorial mount with the other hand Turn the latitude adjustment knob located at the rear of the mount to adjust the angle of the mount Look at the latitude scale 17 on the...

Page 8: ...l red dot onto the night sky While keeping both eyes open when looking through the Star Pointer simply move your telescope until the red dot seen through the Star Pointer merges with the object as seen with your unaided eye The red dot is produced by a light emitting diode LED it is not a laser beam and will not damage the glass window or your eye The star pointer is powered by a long life 3 volt ...

Page 9: ...ole to pole There are 24 major RA coordinates evenly spaced around the 360º equator one every 15º Like the earth s longitudes RA coordinates are a measure of time as well as angular distance We speak of each of the earth s major longitude meridians as being separated by one hour of time because the earth rotates once every 24 hours one hour 15 The same principle applies to celestial longitudes sin...

Page 10: ...cles to find celestial coordinates for stellar objects These coordinates are given in star charts and reference books Polar Alignment To make tracking the stars easier rough polar alignment is required 1 The right ascension polar axis should be pointed towards the North Pole see the illustration below 2 The equatorial mount should be level 3 Your latitude should be set see previous section on Sett...

Page 11: ...rcles are dials or gauges for right ascension and declination that allow you to locate a celestial object easily using its coordinates as listed in a star chart or atlas The declination setting circle is scaled in degrees and the right ascension setting circle is laid out in increments of minutes The setting circles will assist you to get close to your target but not directly on it It s important ...

Page 12: ...piece To calculate magnification use the following formula in which FL focal length Therefore if you use the 20mm eyepiece your magnification is 900 20 45x The same formula can be applied to any of your eyepieces Celestron offers numerous optional eyepieces to expand your range of magnification Eyepieces come in barrel diameters of 96 and 1 In general 1 eyepieces are of a higher optical quality an...

Page 13: ...e of the moon Lunar Observing Hint To increase contrast and bring out visible detail on the lunar surface try using different eyepiece filters available through your local Celestron dealer A yellow filter works well for improving contrast Observing the Planets Other easy targets include the five naked eye planets of our solar system so called because they can be spotted in the night sky by the una...

Page 14: ...n areas washes out most nebulae making them difficult if not impossible to observe The amount of detail you can see is dependent on your observing site dark sky rural locations are best atmospheric conditions brightness of the object and your observing experience T TE EL LE ES SC CO OP PE E M MA AI IN NT TE EN NA AN NC CE E With proper care your telescope should rarely need any maintenance work To...

Page 15: ...ing an object in the eyepiece field of view This makes observing much more enjoyable and eliminates the constant use of the manual cables Models available for all equatorial mounts Sky Maps 93722 When learning the night sky Celestron Sky Maps offer just the guidance you need The maps show all the constellations and brighter deep sky objects and are printed on heavy moisture resistant paper for dur...

Page 16: ...uthorized repair Further product malfunction or deterioration due to normal wear is not covered by this warranty CELESTRON DISCLAIMS ANY WARRANTIES EXPRESS OR IMPLIED WHETHER OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR USE EXCEPT AS EXPRESSLY SET FORTH HEREIN THE SOLE OBLIGATION OF CELESTRON UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE COVERED PRODUCT IN ACCORDANCE WITH THE TER...

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