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2. terminology

Equatorial Mount

 

The equatorial mount allows for the telescope's axes of 
rotation to be adjusted to the user's latitude. The overall 
effect is that the observer can track the heavens along 
the path of the Earth’s rotation.

Eyepiece

 

The part into which you look. It has a number of lenses 
which magnify and allow your eye to focus on the image 
formed by the telescope. Two eyepieces are supplied 
with the telescope. You can buy additional eyepieces; 
eyepieces of different focal lengths will produce different 
magnification factors. 

Finder scope

  

Aids in pointing the telescope. It is a small, low-power 
telescope with “cross hairs” that attach to the optical tube. 
Its wide field of view greatly reduces the work of finding a 
faint object in the main eyepiece of the telescope.

optical tube

 

The main body of the telescope, holding the optics.

Primary Mirror

 

The large curved optical mirror located at the 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 mirror located 
inside the optical tube below the focuser. It diverts light 
sideways to the focuser.

secondary Mirror Holder

 

The mechanical holder for the secondary mirror. 

 

A three-vane spider is used. 

3. Parts list

  1  Optical Tube Assembly  (OTA)
  1  Tripod and Equatorial Head Assembly
  2  Slow-Motion Cables 
  2   RA/DEC Locking Tool
  1  Counterweight Bar
 1 Counterweight
  1  Accessory Tray with knob
  2   Tube Mounting Rings
  2   Eyepieces: 

9mm Kellner

   

 

25mm Kellner

  1  6x30 Finder Scope with bracket 

Optical Tube Assembly

Tube Mounting Rings

Finder Scope

Eyepiece

Focusing Knob

Slow-Motion 

Cables

Latitude 

Adjustment

Accessory 

Tray

Tripod

Height 

Adjustment 

Knob

RA & DEC Locking Tool

Counterweight

Counterweight Bar

Equatorial Head Assembly

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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