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ORION TELESCOPES & BINOCULARS AstroView 6 EQ 9827, Инструкция по эксплуатации, Страница: 16 / 20

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Determine in which constellation the object lies. Now, find the
constellation in the sky. If you do not recognize the constella-
tions on sight, consult a planisphere. The planisphere gives
an all-sky view and shows which constellations are visible on
a given night at a given time.

Now, look at your star chart and find the brightest star in the
constellation that is near the object you are trying to find.
Using the finder scope, point the telescope at this star and
center it in the crosshairs. Next, look again at the star chart
and find another suitably bright star near the bright star cur-
rently centered in the finder. Keep in mind that the field of view
of the finder scope is 7°, so you should choose another star
that is no more than 7° from the first star, if possible. Move the
telescope slightly, until it is centered on the new star.

Continue using the stars as guideposts until you are at the
approximate position of the object you are trying to find
(Figure 17). Look in the telescope’s eyepiece, and the object
should be somewhere in the field of view. If it’s not, sweep the
telescope carefully around the immediate vicinity until the
object is found.

If you have trouble finding the object, start the starhop again
from the brightest star near the object you wish to view. This
time, be sure the stars indicated on the star chart are in fact
the stars you are centering in the eyepiece.

E. The Sun

You can change your nighttime scope into a daytime Sun
viewer by installing an optional full-aperture solar-filter over
the front opening of a AstroView 6 EQ. The primary attraction
is sunspots, which change in shape, appearance, and loca-
tion daily. Sunspots are directly related to magnetic activity in
the sun and follow an 11 year cycle. Many observers like to
make drawings of sunspots to monitor how the sun is chang-
ing from day to day.

Important Note: Do NOT look at the Sun with any optical
instrument without a professionally made solar filter, or
permanent eye damage could result. Also remember to
cover or remove the finder scope before attempting to
view the sun.

7. Astrophotography

Several different types of astrophotography 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 the camera’s viewfinder. Focus the
image with the telescope’s focuser. Try several exposure
times, all less than 1 second, depending on the phase of the
moon and the ISO (film speed) of the film being used. A
remote shutter release is recommended, as touching the
camera’s shutter release can vibrate the camera enough to
ruin the exposure.

Planetary Photography

Once basic Moon photography has been mastered, it’s time
to get images of the planets. This type of astrophotography
also works to get highly magnified shots of the Moon. In addi-
tion to the T-ring, you will need a Universal 1.25" Camera
Adapter. The EQ-3 Motor Drive System (single or dual axis) is
also required. This is because a longer exposure is neces-
sary, which would cause the image to blur if no motor drive
was used for tracking. The equatorial mount must be accu-
rately polar aligned, too.

As before, connect the T-ring to your camera. Before connect-
ing the Universal camera adapter to the T-Ring, an eyepiece
must be inserted and locked into the body of the Universal
camera adapter. Start by using a medium-low power eyepiece
(about 25mm); you 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 telescope’s focuser drawtube and secure
firmly with the thumbscrews.

Aim the telescope at the planet (or Moon) you wish to shoot.
The image will be highly magnified, so you may need to use
the finder scope to center it within the camera’s viewfinder.

Figure 17.

Starhopping is a good way to locate hard-to-find

objects. Refer to a star chart to map a route to the object that uses
bright stars as guideposts. Center the first star you’ve chosen in the
finder scope and telescope eyepiece (1). Now move the scope
carefully in the direction of the next bright star (2), until it is
centered. Repeat (3 and 4). The last hop (5) should place the
desired object in the eyepiece.

Содержание AstroView 6 EQ 9827

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 19: ...19 ...

Страница 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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