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7

aligning the Finder scope 

Having a finder scope makes it very easy to locate objects in the night sky.  You 
may be looking for an object with your naked eye and not see a thing; the use of 
a properly aligned finder scope can put that object right in the center of your tele-
scope’s eyepiece.
After mounting the finder scope, you will want to align the finder to the main tele-
scope . . . to have them both pointing at the same object. This is best done during 
the daylight hours so that you know the image is the same in the finder scope and 
telescope. Choose a tree, telephone pole, street sign, anything that is roughly 
one-fourth to one-half mile away, the further the better.  Put that image in the 
center of the field of your telescope’s eyepiece. Where is it in your finder scope’s 
eyepiece? Hopefully the image will be in the field of view and some simple adjust-
ments on the alignment screws of the mounting bracket will put the image dead 
center in the cross hairs. By loosening one of the alignment screws, and tighten-
ing another one, you are changing the line of sight of the finder scope.  Continue 
making adjustments to the various alignment screws until the image in the finder 
scope matches exactly the image in the telescope’s eyepiece. Check the align-
ment by moving the scope to another object and fixing the cross hairs on the exact 
point you want to look at. Then look through the telescope’s eyepiece to see if the 
images are the same. If they are, the job is done. If not, make the necessary 
adjustments until the two images match up.
Finder scopes often come out of alignment during transportation from site to site.  
Make the necessary adjustments to the alignment screws to bring the image back 
into the center of the cross hairs. Check to see that the same image is in your 
telescope’s eyepiece. One way to help minimize any misalignment is to keep the 
finder-to-main tube bolts very tight.

5. using Your telescope

Moving the telescope 

The telescope is easy to take wherever you want to do your observing. You’ll be 
amazed at the difference in views from city lights to dark country skies. (The moon 
and planets aren’t affected much by city lights, however.)
Don’t be afraid to load the telescope into your car for a trip to the hills. Common 
sense prevails: as long as the telescope doesn’t roll or bounce around, you won’t 
hurt it at all by moving it. 
To carry the telescope out of the house for at-home viewing, you can easily carry 
the tube and tripod and mount assembly separately. The tube can easily be 
mated to the tripod and mount assembly when you get to the site from which you 
wish to observe.

Field use and set-up

When selecting a location for observing, be sure to place the telescope as far 
away as possible from direct artificial light, such as street lights, porch lights, and 
automobile headlights. The glare from these lights will seriously impair your night 
vision. The telescope should be located on a relatively level surface for proper 

4. getting started

unpacking Your telescope

The SkyView comes almost completely assembled from the factory.  For ease of 
transportation, it is broken down into several main parts: the tube, the mount, and 
the tripod. Compare the diagram of accessories to the box you have just opened 
and identify all the parts.  Make sure that all the items listed are present.  
Please be sure to keep the original shipping container intact.  Not only would it be 
needed in the event of shipping the telescope to another location, or back to Orion 
for warranty repair service, but it also makes a very good storage container when 
the telescope is not in use.

assembling the tripod and Mount

The tripod and equatorial head come pre-assembled 
from the factory. Your first step will be to attach the 
accessory tray to the center of the leg supports; it 
attaches from the bottom with the knob that has been 
included. Next, you will want to thread the counterweight 
shaft into the equatorial head along the declination axis. 
Slide the counterweight onto the shaft and thread in the 
counterweight stop at the end of the shaft. The final step 
in completing the tripod and mount assembly is to attach 
the two slow-motion control cables. They attach to either 
side (whichever is most comfortable for you) of the 
shafts extending from the worm gears on the RA and DEC axes.

optical tube Preparation

The optical tube is pretty much complete. The optics have been installed and col-
limated at the factory, so there is no need to do any adjustments to them.  
However, you will need to install the finder scope.
Locate the finder scope from the items in the shipping container. It has already 
been installed to the ring system (bracket) that will allow for further adjustments, 
but for the moment we are concerned with attaching it to the optical tube assem-
bly. There are two threaded studs protruding from the tube which correspond with 
two holes in the base of the bracket. Fit the bracket over these two threaded studs. 
Then, using the knurled fasteners, secure the bracket to the main tube.

optical tube into the cradle rings

Attaching the optical tube to the tripod and mount assembly is done with tube 
clamps.  These clamps are bolted to the equatorial mount at the head of the dec-
lination axis with the included knobs.  By unthreading the knobs on the ringed 
portion of the cradle,  the clamps will swing open and the optical tube will secure-
ly fit inside.  Thread the knobs so that the tube does not slide while in the cradle 
rings, but not so tight that the optical tube is dented.
The telescope is now a complete unit, ready for first light.  However, there is one 
additional step that should be done prior to taking your SkyView out for the first 
time: aligning the finder scope.

6

Summary of Contents for SkyView 4.5"

Page 1: ...I n s t r u c t i o n M a n u a l Orion SkyView 4 5 Equatorial Reflector Telescope P O Box 1815 Santa Cruz CA 95061 ...

Page 2: ...ility 5 You should not have to lubricate the gears on the mount this has been done at the factory However after long periods of storage or a visit to a particularly dusty observing site you may want to put a light coating of automotive bearing grease on the gears SkyView 4 5 Equatorial Refractor Telescope Congratulations Your new SkyView 4 5 Reflector Telescope is a precision astronomical instrume...

Page 3: ... bottom of the optical tube Primary Mirror Cell The mechanical holder for the primary mirror with align ment adjusting bolts which allow exact positioning of the tilt of the primary mirror Rack and Pinion Focuser The mechanical holder for the eyepiece which allows the eyepiece to be moved in and out to adjust the focus of the telescope Secondary Mirror The small elliptical shaped flat optical mirr...

Page 4: ...cial light such as street lights porch lights and automobile headlights The glare from these lights will seriously impair your night vision The telescope should be located on a relatively level surface for proper 4 Getting Started Unpacking Your Telescope The SkyView comes almost completely assembled from the factory For ease of transportation it is broken down into several main parts the tube the...

Page 5: ...mplished by loosening the RA and DEC axes locking mechanisms and moving the telescope into the general area you wish to observe Lock down the axes by tightening the knobs and locate the object using the slow motion cables Moving the tripod is not necessary To keep the object in the field of view of the telescope over a period of time use the RA slow motion control to keep the object centered You a...

Page 6: ... Higher power eye pieces should bring out the cloud bands and perhaps even the Great Red Spot which has faded to yellow in recent years 10 Unstable atmosphere or atmospheric distortions dust in the air air currents etc will show up at higher magnifications With an out of focus star image any move ment across the disc will be a result of an unstable atmosphere Make sure you are not looking over bui...

Page 7: ... not designed for effective use during the daytime and there are no accessories which will overcome this limitation SATURN The ringed planet is a breathtaking sight when Saturn is well positioned The angle the rings present to the earth varies over a period of many years sometimes they are seen edge on and are entirely invisible as they are in 1995 Other times they are broadside and easily seen as...

Page 8: ...tool at the secondary mirror When it s properly aligned the secondary mirror itself should be centered under the focuser and the entire reflection of the primary mirror should be seen If either the secondary mirror or the primary mirror reflection are not centered the secondary mirror will need to be adjusted 5 Adjust the diagonal In order to center the secondary mirror loosen the large allen head...

Page 9: ...ast through many many years of use before requiring re coating which is easily done The diagonal mirror is more likely to require cleaning since it is right up near the eyepiece It should be cleaned by blowing or brushing dust off first do not use canned air as it contains compounds harmful to first surface mirrors then cleaned with ordinary lens fluid and cleaning tissue Be extra gentle when clea...

Page 10: ...used just one time Dry the mirror in a stream of air or remove any stray drops of water with the corner of a paper towel Water will run off a clean surface Dry the cell and exposed surfaces with a towel Cover the mirror surface with Kleenex and leave the entire assembly in a warm area until it is completely dry before reassembling the telescope Your Orion SkyView 4 5 will provide years of viewing ...

Page 11: ...y warranted instrument which proves to be defective pro vided it is returned postage paid to Orion Warranty Repair 89 Hangar Way Watsonville CA 95076 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 mishandled or modified nor does it apply to normal wear and tear This warranty gives you specific ...

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