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9

Jupiter, and Saturn are the brightest objects in the sky after the 
Sun and the Moon. Other planets may be visible but will likely 
appear star-like. Because planets are quite small in apparent 
size, optional higher-power eyepieces or a Barlow lens are rec-
ommended and often needed for detailed observations.
B. The Sun
You can change your nighttime telescope into a daytime Sun 
viewer by installing an optional full-aperture solar filter over the 
front opening of the telescope. The primary attraction is sun-
spots, which change shape, appearance, and location daily. 
Sunspots are directly related to magnetic activity in the Sun. 
Many observers like to make drawings of sunspots to monitor 
how the Sun is changing from day to day. 
Important Note: Do not look at the Sun with any optical 
instrument without a professionally made solar filter, or per-
manent eye damage could result.
D. The Stars
Stars will appear like twinkling points of light. Even powerful 
telescopes cannot magnify stars to appear as more than a 
point of light. You can, however, enjoy the different colors of 
the stars and locate many pretty double and multiple stars. The 
famous “Double-Double” in the constellation Lyra and the gor-
geous two-color double star Albireo in Cygnus are favorites. 
Defocusing a star slightly can help bring out its color.
E. Deep-Sky Objects
Under dark skies, you can observe a wealth of fascinating 
deep-sky objects, including gaseous nebulas, open and globu-
lar star clusters, and different types of galaxies. Most deep-sky 
objects are very faint, so it is important you find an observing 
site well away from light pollution. 
To find deep-sky objects with your telescope, you first need 
to become reasonably familiar with the night sky. Unless you 
know how to recognize the constellation Orion, for instance, 
you won’t have much luck locating the Orion Nebula. A simple 
planisphere, or star wheel, can be a valuable tool for learning 
the constellations and seeing which ones are visible in the sky 
on a given night. Once you have identified a few constellations, 
a good star chart, atlas, or astronomy app will come in handy 
for helping locate interesting deep-sky objects to view within 
the constellations. 
Do not expect these objects to appear like the photographs 
you see in books and on the internet; most will look like dim 
gray smudges. Our eyes are not sensitive enough to see color 
in deep-sky objects except in a few of the brightest ones. But 
as you become more experienced and your observing skills 
get sharper, you will be able to ferret out more and more subtle 
details and structure. 

5. Worthwhile Optional 

Accessories

• 

Moon Filter – A 1.25" Moon filter will cut down the strong 
glare of sunlight reflected from the Moon, making Moon 
viewing more comfortable and revealing more surface 

detail. The filter threads into the bottom of the Kellner eye-
pieces that came with your telescope 

(Figure 13).

• 

Barlow Lens – A 2x Barlow lens doubles the magnify-
ing power of any eyepiece it’s used with, giving you a big 
power boost to get in closer to your target object. You just 
insert it between the diagonal and the eyepiece.

 

• 

Correct-Image Diagonal – Also called an “erect-image” 
diagonal, this accessory will provide a correctly oriented 
view through the telescope, which is recommended for 
daytime terrestrial viewing. 

• 

Planisphere – A nifty “star wheel” that shows what stars 
and constellations are visible in the sky at any time of any 
night. Just set the date and time see a mini representation 
of your local night sky. Great for identifying what you see 
and planning an evening’s observing session.

• 

Star Map – More detailed than a planisphere, a star map is 
essential for locating interesting celestial objects to observe 
with your telescope. Nowadays many mobile astronomy 
apps feature customizable star maps that you can access 
on your smartphone or tablet while you’re at the telescope. 

6. Telescope Care and 

Maintenance

If you give your telescope reasonable care, it will last a lifetime. 
Store it in a clean, dry, dust-free place, safe from rapid changes 
in temperature and humidity. Do not store the telescope outdoors, 
although storage in a garage or shed is OK. Small components 
like eyepieces and other accessories should be kept in a protec-
tive box or storage case. Keep the dust cover on the front of the 
telescope when it is not in use.
Your refractor telescope requires very little mechanical mainte-
nance. The optical tube has a smooth painted finish that is fairly 
scratch-resistant. If a scratch does appear on the tube, it will not 
harm the telescope. If you wish, you may apply some auto touch-
up paint to the scratch. Smudges on the tube can be wiped off 
with a soft cloth and household cleaning fluid.

Cleaning Optics

Any quality optical lens cleaning tissue and optical lens clean-
ing fluid specifically designed for multi-coated optics can be used 
to clean the lenses of your telescope and eyepieces. Never use 
regular glass cleaner or cleaning fluid designed for eyeglasses. 
Before cleaning, remove any loose particles or dust from the lens 
with a blower bulb or soft brush. Then apply some cleaning fluid 
to a tissue, never directly on the optics. Wipe the lens gently in a 
circular motion, then remove any excess fluid with a fresh lens 
tissue. Oily fingerprints and smudges may be removed using this 
method. Use caution; rubbing too hard may scratch the lens. On 
larger lenses, clean only a small area at a time, using a fresh lens 
tissue on each area. Never reuse tissues.
When bringing the telescope inside after an evening’s viewing it 
is normal for moisture to accumulate on the lenses due to the 
change in temperature. We suggest leaving the telescope and 
eyepieces uncovered overnight to allow the condensation to 
evaporate.

Содержание Observer II 70mm Altazimuth Refractor

Страница 1: ...ate Offices 89 Hangar Way Watsonville CA 95076 USA Copyright 2017 Orion Telescopes Binoculars All Rights Reserved No part of this product instruction or any of its contents may be reproduced copied modified or adapted without the prior written consent of Orion Telescopes Binoculars Providing Exceptional Consumer Optical Products Since 1975 ...

Страница 2: ...ease read them over thoroughly before getting started WARNING Never look directly at the Sun through your telescope even for an instant without a professionally made solar filter that completely covers the front of the instrument or permanent eye damage could result Young children should use this telescope only with adult supervision Table of Contents 1 Parts List 2 2 Assembly 4 3 Preparing the Te...

Страница 3: ...3 Figure 1 The parts of the Observer II 70 Altaz telescope A P H I J K L F G C M D B O N E ...

Страница 4: ...ay is attached to all three leg braces The tripod and yoke mount are now fully assembled Figure 6 Next you will install the telescope tube on the altazimuth yoke mount 5 With the optical tube G oriented relative to the yoke mount B as shown in Figure 7 line up the holes in the attachment plates on the side of the optical tube with the holes in the ends of the yoke mount 7a Then secure the optical ...

Страница 5: ... be aligned with the main telescope This is easiest to do during daylight hours before observing at night Follow this procedure 1 First remove the dust cap P from the front of the tele scope 2 Then with the 25mm eyepiece already in the focuser from step 8 above point the telescope at a well defined land target e g the top of a telephone pole that s at least a quarter mile away When pointing the te...

Страница 6: ...azimuth direction loosen the azimuth lock knob take hold of the telescope and gently rotate it to the desired position Then re tighten the azimuth lock knob To move the tele scope in the altitude direction loosen the altitude lock knob then move the tube up or down to the desired position Then retighten the altitude lock knob If the telescope moves too freely in the in the altitude direction then ...

Страница 7: ...specially important for observing faint objects is good trans parency air free of moisture smoke and dust All tend to scat ter light which reduces an object s brightness Transparency is judged by the magnitude of the faintest stars you can see with the unaided eye 5th or 6th magnitude is desirable Cooling the Telescope All optical instruments need time to reach thermal equilibri um The bigger the ...

Страница 8: ...e achieving ini tial focus rack the focuser drawtube all the way in using the focus wheels then while looking into the eyepiece slowly turn the focus wheels so that the drawtube extends outward Keep going until you see your target object come into focus Note that when you change eyepieces you may have to adjust the focus a bit to get a sharp image with the newly inserted eye piece What to Expect S...

Страница 9: ...evealing more surface detail The filter threads into the bottom of the Kellner eye pieces that came with your telescope Figure 13 Barlow Lens A 2x Barlow lens doubles the magnify ing power of any eyepiece it s used with giving you a big power boost to get in closer to your target object You just insert it between the diagonal and the eyepiece Correct Image Diagonal Also called an erect image diago...

Страница 10: ...aw your state or national statutory consumer rights governing the sale of consumer goods remain fully applicable For further warranty information please visit www OrionTelescopes com warranty Orion Telescopes Binoculars Corporate Offices 89 Hangar Way Watsonville CA 95076 USA Customer Support www OrionTelescopes com contactus Copyright 2017 Orion Telescopes Binoculars All Rights Reserved No part o...

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