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dreds of deep sky objects. Do not expect to see as much color
as you in NASA photos, since those are taken with long-expo-
sure cameras and have “false color” added. Our eyes are not
sensitive enough to see color in deep-sky objects except in a
few of the brightest ones.

Remember that you are seeing these objects using your own
telescope with your own eyes! The object you see in your
eyepiece is in real-time, and not some conveniently provided
image from an expensive space probe. Each session with
your telescope will be a learning experience. Each time you
work with your telescope it will get easier to use, and stellar
objects will become easier to find. Take it from us, there is big
difference between looking at a well-made full-color NASA
image of a deep-sky object in a lit room during the daytime,
and seeing that same object in your telescope at night. One
can merely be a pretty 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 best
time to view it is during its partial phases when shadows fall
on the craters and canyon walls to give its features definition.
While the full moon may look like a tempting target, it is actu-
ally the worst time for viewing! The light of a full moon is too
bright and lacks any decent surface definition.

Use an optional Moon filter to dim the Moon when it is very
bright. It simply threads onto the bottom of the eyepiece from
the focuser (you must first remove the eyepiece from the
focuser to attach the filter). You’ll find the Moon filter improves
viewing comfort, and helps bring out the subtle features in the
lunar surface.

B. The Bright Planets

The planets don’t stay put like stars do, so you will have to refer
to charts published monthly on our website, telescope.com, or
other astronomy references to locate them. Venus, Mars,
Jupiter, and Saturn are the brightest objects in the sky after
the Sun and the Moon. All four of these planets are not nor-
mally visible in the sky at one time, but chances are one or
two of them will be.

JUPITER The largest planet, Jupiter, is a great subject to
observe. You can see the disk of the giant planet and watch
the ever-changing positions of its four largest moons, Io,
Callisto, Europa, and Ganymede. If atmospheric conditions
are good, you may be able to resolve thin cloud bands on the
planet’s disk.

SATURN The ringed planet is a breathtaking sight when it is
well positioned. The tilt angle of the rings varies over a period
of many years; sometimes they are seen edge-on, while at
other times they are broadside and look like giant “ears” on
each side of Saturn’s disk. A steady atmosphere (good see-
ing) is necessary for a good view. You may see a tiny, bright
“star” close by; that’s Saturn’s brightest moon, Titan.

VENUS At its brightest, Venus is the most luminous object in
the sky, excluding the Sun and the Moon. It is so bright that
sometimes it is visible to the naked eye during full daylight!

Ironically, Venus appears as a thin crescent, not a full disk,
when at its peak brightness. Because it is so close to the Sun,
it never wanders too far from the morning or evening horizon.
No surface markings can be seen on Venus, which is always
shrouded in dense clouds.

MARS If atmospheric conditions are good, you may be able
to see some subtle surface detail on the Red Planet, possibly
even the polar ice cap. Mars makes a close approach to Earth
every two years; during those approaches its disk is larger
and thus more favorable for viewing.

C. Stars

Stars will appear like twinkling points of light in the telescope.
Even the largest telescopes cannot magnify stars to appear
as anything more than points 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 con-
stellation Lyra and the gorgeous two-color double star Albireo
in Cygnus are favorites. Defocusing the image of a star slight-
ly can help bring out its color.

D. Deep-Sky Objects

Under dark skies, you can observe a number of brighter
deep-sky objects with your AstroView 6 EQ, including
gaseous nebulas, open and globular star clusters, and the
brighter galaxies. Most deep-sky objects are very faint, so it is
important that you find an observing site well away from light
pollution. Take plenty of time to let your eyes adjust to the
darkness. As you become more experienced and your
observing skills improve, you will be able to coax out more
and more intricate details.

Finding Deep-Sky Objects: Starhopping

Starhopping, as it is called by astronomers, is perhaps the
simplest way to hunt down objects to view in the night sky. It
entails first pointing the telescope at a star close to the object
you wish to observe, and then progressing to other stars clos-
er and closer to the object until it is in the field of view of the
eyepiece. It is a very intuitive technique that has been
employed for hundreds of years by professional and amateur
astronomers alike. Keep in mind, as with any new task, that
starhopping may seem challenging at first, but will become
easier over time and with practice.

To starhop, only a minimal amount of additional equipment is
necessary. A star chart or atlas that shows stars to at least
magnitude 5 is required. Select one that shows the positions
of many deep-sky objects, so you will have lots 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 to view. The brightness of an
object is measured by its visual magnitude; the brighter an
object, the lower its magnitude. Choose an object with a visu-
al magnitude of 9 or lower. Many beginners start with the
Messier objects, which represent some of the best and bright-
est deep-sky objects.

Summary of Contents for AstroView 6 EQ 9827

Page 1: ...Providing 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 AstroView 6 EQ 9827 Equatorial Reflecting Telescope ...

Page 2: ...Small counterweight Toe Saver Counterweight lock knobs Tripod leg Accessory tray bracket Accessory tray Finder scope Finder scope bracket Eyepiece Focus knob Tube rings Optical tube Right ascension slow motion control Right ascension lock lever Polar axis finder covered Latitude scale Latitude adjustment T bolts Leg lock knob ...

Page 3: ...s the lenses of the finder scope or eyepieces with your fingers The optical sur faces have delicate coatings on them that can easily be dam aged if touched inappropriately 1 Lay the equatorial mount on its side Attach the tripod legs one at a time to the mount using the leg attachment screws Line up the holes in the top of the leg with the holes in the base of the mount and insert the screw so it ...

Page 4: ...ring clamps fin ger tight to secure the telescope in position 11 Now attach the two slow motion control cables to the R A and Dec worm gear shafts of the equatorial mount by posi tioning the small screw on the end of the cable over the indented slot on the worm gear shaft Then tighten the screw Use the short slow motion control for the R A axis it will stick out sideways from the mount The longer ...

Page 5: ...ope is now balanced on both axes Now when you loosen the lock lever on one or both axes and manually point the telescope it should move without resistance and should not drift from where you point it 3 Using Your Telescope Focusing the Telescope You should now try to familiarize yourself with focusing the tel escope First insert the 25mm eyepiece in the focuser and point the telescope in the gener...

Page 6: ...hrough the finder scope the images appear somewhat out of focus you will need to refocus the finder scope for your eyes Loosen the lock ring located behind the objective lens cell on the body of the finder scope see Figure 2a Back the lock ring off by a few turns for now Refocus the finder scope on a distant object by threading the objective lens cell in or out of the finderscope body Precise focu...

Page 7: ...l axis out into space Stars in the Northern Hemisphere appear to revolve around Polaris To find Polaris in the sky look north and locate the pattern of the Big Dipper Figure 6 The two stars at the end of the bowl of the Big Dipper point right to Polaris Observers in the Southern Hemisphere aren t so fortunate to have a bright star so near the south celestial pole SCP The star Sigma Octantis lies a...

Page 8: ...d for accurate polar alignment once the finder is properly aligned Alignment of the polar finder is best done during the day before going out into the field at night Aligning the Polar Axis Finder Scope Aligning the polar axis finder scope so that it will accurately point at the true north pole is a two step procedure First the polar finder must be rotated in its housing so that the small circle i...

Page 9: ...ian by the calculated amount If your local longitude has a value greater than the closest standard time meridian you are west of the standard time meridian by the calculated amount For example if you are in Las Vegas which has a longitude of 115 the closest stan dard time meridian is 120 The difference between these two numbers is 5 Since Las Vegas longitude value is less than the standard time me...

Page 10: ...ting Circle 1 Identify a bright star in the sky near the celestial equator Dec 0 and look up its coordinates in a star atlas 2 Loosen the R A and Dec lock levers on the equatorial mount so the telescope optical tube can move freely 3 Point the telescope at the bright star whose coordinates you know Lock the R A and Dec lock levers Center the star in the telescope s field of view with the slow moti...

Page 11: ...f cen ter as in Figure 10b proceed with the following collimation procedure The Collimation Cap and Mirror Center Mark Your AstroView 6 EQ comes with a collimation cap This is a simple cap that fits on the focuser drawtube like a dust cap but has a hole in the center and a silver bottom This helps center your eye so that collimation is easy to perform Figures 10b through 10e assume you have the co...

Page 12: ...e primary mirror It will need adjustment if as in Figure 10d the secondary mirror is cen tered under the focuser and the reflection of the primary mir ror is centered in the secondary mirror but the small reflec tion of the secondary mirror with the dot of the collimation cap is off center The tilt of the primary mirror is adjusted with three spring loaded collimation thumbscrews on the back end o...

Page 13: ...ion even though they may be perfectly aligned It is critical to keep the star centered so over time you will need to make slight corrections to the telescope s position in order to account for the sky s apparent motion 6 Astronomical Observing Site Selection Pick a location away from streetlights and bright yard light ing Avoid viewing over rooftops and chimneys as they often have warm air current...

Page 14: ...k adaptation like white light does A flashlight with a red LED light is ideal or you can cover the front of a regular flashlight with red cellophane or paper Beware too that nearby porch and streetlights and automobile headlights will spoil your night vision Eyepiece Selection By using eyepieces of varying focal lengths it is possible to attain many magnifications with the AstroView 6 EQ The tele ...

Page 15: ...itan VENUS At its brightest Venus is the most luminous object in the sky excluding the Sun and the Moon It is so bright that sometimes it is visible to the naked eye during full daylight Ironically Venus appears as a thin crescent not a full disk when at its peak brightness Because it is so close to the Sun it never wanders too far from the morning or evening horizon No surface markings can be see...

Page 16: ...raphy can be success fully attempted with the AstroView 6 EQ Moon Photography This is perhaps the simplest form of astrophotography as no motor drive is required All that is needed is a T Ring for your specific camera model Attach the T ring to your camera body and then thread the T Ring on to the focuser drawtube Now you are ready to shoot Point the telescope toward the Moon and center it within ...

Page 17: ... eyepiece you re ready to shoot Deep sky objects are quite faint and typically require expo sures on the order of 10 minutes To hold the camera s shutter open this long you will need a locking shutter release cable Set the camera s shutter to the B bulb setting Depress the locking shutter release cable and lock it You are now expos ing your first deep sky object While exposing through the camera l...

Page 18: ...ow remove the mirror from the mirror cell Do not touch the surface of the mirror with your fingers Lift the mirror carefully by the edges Set the mirror in a clean soft towel Fill a clean sink free of abrasive cleanser with room temperature water a few drops of liquid dishwashing detergent and if possible a capfull of rubbing alcohol Submerge the mirror aluminized face up in the water and let it s...

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Page 20: ...y 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 abused mishan dled or modified nor does it apply to normal wear and tear This warranty gives you specific legal rights and you may also have other rights which vary from state to state For further wa...

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