Bushnell 78-4502 User Manual download pdf

The World’s Easiest Equatorial Mount

Instruction Manual for Reflector Telescopes

78-4502 (QVC # E3495)

Before you get started, you’ll need to know that your telescope is a Reflector telescope.

That means that everything you see will be upside down and backwards. No exceptions.

If you are looking for a telescope to use on land based objects then you should use a

Refractor telescope as it can erect an image and in many cases correct the right to left

viewing.

Without getting fancy or technical, equatorial mounts are basically star finders. Most all

of the visible stars in the sky have an address in a book called a Star Atlas (roadmap of

stars) that is expressed in terms of its Right Ascension and then its Declination.

Basically it’s outer space longitude and then latitude. It will look something like this:

23hr 42min 03sec, 78.3deg N

When using an equatorial mount, you can move your telescope to these settings and find

the star that corresponds to that address.

You will need to have a Star Atlas to use the equatorial mount. You can purchase one at

just about any bookstore on earth.

As well, you will need to be able to identify 2 stars in the sky. The first star will be the

North Star. Coincidentally this star is perfectly north EVERY night you go out. It is

generally around 25 to 45 degrees up from the horizon in North America.

The second star you will need to be able to identify in the sky is a little bit harder. The

second star can really be any star in the sky other than our sun and the North Star. You

can pick a star from a constellation that is in the sky and use a particular star in it. You

will not only have to be able to identify it, but in Step 5 you will need to be able to center

it in the telescope. Unfortunately, there is no other alternative. If you want to use your

equatorial mount, you’ll need to be able to do this.

In most Star Atlas books there is a section that gives suggestions on which stars to use for

the second star, I recommend using it. Also, there is a section that has the latitude setting

for the North Star in certain areas. You will need this when going through Step 4.

Finally, you will need to set your telescope up to be able to use a Star Atlas. The

following instructions in steps 1-7 will show you how to do this. Good Luck and Have

Fun!!!!!

1 2 3 4 5 6 ... 18 19

Summary of Contents

Page 1 - 78-4502 (QVC # E3495)

The World’s Easiest Equatorial Mount Instruction Manual for Reflector Telescopes 78-4502 (QVC # E3495) Before you get started, you’ll need to know

Page 2 - Table of Contents

Next, find the object in the telescope and center it in the viewing area. Finally, get the obj

Page 3 - Finderscope

898190-200-210-220-230-232221201918Get everything at right angles. If you’re not sure, just m

Page 4 - Fine Adjustment Cables

898190-200-210-220-230-232221201918With everything at 90-degree angles, turn the telescope sco

Page 5

898190-200-210-220-230-232221201918Put the 20 mm eyepiece into the Focusing Tube. If you do n

Page 6

190-200-210-220-230-Next, you will need to elevate the telescope up to the North Star. Do thi

Page 7 - Figuring the Magnification

190-200-210-220-230-There will be numbers on the Declination Setting and either an arrow or a

Page 8 - Aligning the Finderscope

190-200-210-220-230-Next, you will need to find the second star I talked about earlier. See th

Page 9

190-200-210-220-230-Finally, move the tube of the telescope along the Right Ascension Axis unt

Page 10

This is the 2nd star that you are aligning your telescope to. It is the same star as in Step

Page 11

QVC TELESCOPE 78-4502 (QVC) QVC refers to this telescope as the E3495. It comes with a black and white video eyepiece and a clock drive.

Page 12

Table of Contents Page 1 …... Introduction Page 2 …... Table of Contents Page 3 …... Listing of all the Telescope Sections Page 4 …... Fine Adju

Page 13

NEVER AdjustThese Screws as they are preset from the factory.Open End That Faces What You Are Looki

Page 14

Fine Adjustment Cables The fine adjustment cables move the declination and right ascension settings in very small increments. When you are aligning

Page 15

Telescope Axis’s This instruction manual refers to 3 axis’s in which the telescope will turn. This diagram illustrates these

Page 16

The Barlow Lens and Eyepieces Here are a few things you’ll need to know and know how to do before getting started. You should receive several diffe

Page 17

Figuring the Magnification To figure the magnification you must first know the focal length of your telescope. Many times the focal length will be 7

Page 18

Aligning the Finderscope You will need to line up the Finderscope with your telescope. A finderscope acts kind of like a riflescope in that it help

Page 19 - QVC TELESCOPE

Start with a large object about 200 yards away. You do not have to be absolutely accurate with the dis

Comments to this Manuals

No comments

Bushnell 78-4502 User Manual

Browse online or download User Manual for Telescopes Bushnell 78-4502. Voyager - 784502

Summary of Contents

Comments to this Manuals

Related products and manuals for Telescopes Bushnell 78-4502