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19

stream of lukewarm water. Any particles on the surface can be
swabbed gently with a series of cotton balls, each used just
one time. Dry the mirror in a stream of air (a “blower bulb”
works great), or remove any stray drops of water with the cor-
ner of a paper towel. Water will run off a clean surface. Cover
the mirror surface with Kleenex, and leave the mirror in a
warm area until it is completely dry before reassembling the
telescope.

11. Specifications

Primary mirror diameter: 203mm (8")

Primary mirror coating: Aluminized, SiO

2

overcoat

Focal Length: 1000mm

Focal Ratio: f/4.9

Secondary mirror: 58mm minor axis

Secondary mirror holder: Four-vaned spider, .4mm thick vanes

Eyepieces: 25mm and 10mm Sirius Plössls, fully coated, 1.25"

Magnification: 40x (with 25mm) and 100x (with 10mm)

Finder Scope: 6x30 achromatic, 7° field of view

Focuser: Rack and pinion, accepts 2" or 1.25" eyepieces

Camera adapter: Couples 35mm SLR camera T-ring to focuser

Mount: SkyView Pro, German equatorial

Tripod: Steel

Tripod support tray: Aluminum, provides additional stability,
holds five 1.25" eyepiece and two 2" eyepieces

Weight: 62 lbs. (Mount 30 lbs., optical tube 32 lbs.)

Counterweights: 10.9 lbs. each

Polar axis latitude adjustment: 8° to 70°

Polar axis finder: Optional

Motor Drives: Optional

Summary of Contents for 8 EQ

Page 1: ...oviding 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 8...

Page 2: ...control knob Latitude scale Latitude adjustment L bolts Center support shaft Tripod support tray Declination slow motion control knob Safety thumbscrew Mounting plate securing knob Counterweight shaf...

Page 3: ...bracket with O ring 1 Collimation cap 1 Camera adapter 1 Dust cover 3 Assembly 1 Stand the tripod legs upright and spread the legs out as far as they will go Keep the tripod legs at their shortest ful...

Page 4: ...d into the tube rings Note that the side of the mounting plate with the central groove will be facing up Use the small wrench to secure the tube rings to the mounting plate 10 Loosen the black mountin...

Page 5: ...ec lock lever The telescope should now be able to rotate freely about the Dec axis Loosen the tube ring clamps a few turns until you can slide the telescope tube forward and back inside the rings this...

Page 6: ...aligned accurately with the telescope for proper use To align it first aim the main telescope in the gen eral direction of an object at least a 1 4 mile away the top of a telephone pole a chimney etc...

Page 7: ...us for your new magnification Using 2 eyepieces The SkyView Pro 8 EQ s focuser is capable of accepting optional 2 eyepieces To use 2 eyepieces you must remove the 1 25 adapter from the focuser by loos...

Page 8: ...ded for astrophotography For this we suggest using the optional polar axis finder scope From this point on in your observing session you should not make any further adjustments to the latitude of the...

Page 9: ...loosen the knob underneath the equatorial mount on the center support shaft to use the azimuth adjustment knobs Once Polaris is properly posi tioned within the reticle you are precisely polar aligned...

Page 10: ...R A 5h 35 4m Dec 5 27 That s 5 hours and 35 4 minutes in right ascension and 5 degrees and 27 arc minutes in declination there are 60 arc minutes in 1 degree of declination Before you can use the sett...

Page 11: ...ascension so that the counterweight shaft is positioned horizontally Then rotate the scope in declination so it points to where you want it near the horizon To point the telescope directly south the c...

Page 12: ...the time being The secondary mirror itself should be cen tered in the focuser drawtube in the direction parallel to the length of the telescope If it isn t as in Figure 14b it must be adjusted This ad...

Page 13: ...hould resemble Figure 14e Re tighten the locking thumbscrews A simple star test will tell you whether the optics are accurate ly collimated Star Testing the Telescope When it is dark point the telesco...

Page 14: ...light pol lution or other conditions that are hindering your viewing See Figure 20 Cooling the Telescope All optical instruments need time to reach thermal equilibri um to achieve maximum stability of...

Page 15: ...image someone gave to you The other is an experience you will never forget A The Moon With is rocky and cratered surface the moon is one of the most interesting and easy subjects for your scope The b...

Page 16: ...will have a lot of options to choose from If you do not know the positions of the constella tions in the night sky you will need to get a planisphere to identify them Start by choosing bright objects...

Page 17: ...u can increase the magnification later with a high power eyepiece Then connect the entire camera adapter with eyepiece inside to the T Ring Insert the whole system into the focuser s 1 25 adapter and...

Page 18: ...y quality optical lens cleaning tissue and optical lens clean ing fluid specifically designed for multi coated optics can be used to clean the exposed lenses of your eyepieces or finder scope Never us...

Page 19: ...iO2 overcoat Focal Length 1000mm Focal Ratio f 4 9 Secondary mirror 58mm minor axis Secondary mirror holder Four vaned spider 4mm thick vanes Eyepieces 25mm and 10mm Sirius Pl ssls fully coated 1 25 M...

Page 20: ...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...

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