background image

 

15

accessories attached to the telescope.  For safe solar viewing, use a 

Celestron

 solar filter.  This filter reduces the 

intensity of the sun's light, making it safe to view.  With this filter you can see sunspots as they move across the solar 
disk and faculae, which are bright patches seen near the sun's edge. Before any solar viewing, please review the 
warning in the Introduction. 
 
To enable you to find objects you should have a set of Star Charts.  The location of the planets may appear in local 
newspapers. 
 

Observing Deep-Sky Objects 

 
Deep-sky objects are simply those objects outside the boundaries of our solar system.  They include star clusters, 
planetary nebulae, diffuse nebulae, double stars and other galaxies outside our own Milky Way.  Unlike the sun, 
moon and our five major planets, most deep-sky objects are not visible to the naked eye.  

Celestron

 Sky Maps 

(#93722) can help you locate the brightest deep-sky objects. 
 
Most deep-sky objects have a large angular size.  Therefore, a low-to-moderate power eyepiece is all you need to see 
them.  Visually, they are too faint to reveal any of the color seen in long exposure photographs.  Instead, they appear 
black and white.  Because of their low surface brightness, they should be observed from a “dark-sky” location.  Light 
pollution around large urban 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

T

E

E

L

L

E

E

S

S

C

C

O

O

P

P

E

E

 

 

M

M

A

A

I

I

N

N

T

T

E

E

N

N

A

A

N

N

C

C

E

E

 

 

 
 
With proper care, your telescope should rarely need any maintenance work.  To maintain your telescope in the best 
possible condition, observe the follow suggestions: 
 
1.  When your telescope isn’t in use, replace all lens covers to keep dust and contaminants off the optical surfaces. 
 
2.  A small amount of dust on any optical surface isn’t a problem and doesn’t need to be removed.  If the dust 

builds up, then use a can of compressed air and a camels hair brush to remove the dust.  To remove fingerprints 
or other contaminants, use an optical cleaning kit or the 

Celestron

 Lens Pen (#93575). 

 
3.  If the inside of the objective lens needs cleaning, it should be done by a professional.  Either have your 

instrument serviced by a telescope repair facility or return it to the factory for servicing. 

 
 

S

S

P

P

E

E

C

C

I

I

F

F

I

I

C

C

A

A

T

T

I

I

O

O

N

N

S

S

 

 

 
 
 

Firstscope 60 

Firstscope 70 

Firstscope 80 

Aperture 60mm 

70mm 

80mm 

Focal Length 

900mm 

900mm 

900mm 

Focal Ratio 

f/15 

f/13 

f/11 

Mounting 

German Equatorial 

German Equatorial 

German Equatorial 

Tripod 

Adjustable aluminum 

Adjustable aluminum 

Adjustable aluminum 

Rack & Pinion Focuser 

1¼" 

1¼" 

1¼" 

 
 

NOTE: Specifications are subject to change without notice.

 

Содержание 21067

Страница 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 ...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Отзывы: