Celestron Wide View 52260 Bedienungsanleitung

80mm Wide View Spotting Scope (#52260)

102mm Wide View Spotting Scope (#52270)

INSTRUCTION MANUAL

INTRODUCTION

A spotting scope is nothing more than a telescope that is designed to look around the Earth.

Unlike astronomical telescopes, which produce inverted or reverted images, spotting scopes

produce correctly oriented images. Celestron offers several different models, each of which uses

the highest quality optics to produce the best possible images.

How to Use this Manual

This manual explains the proper use of your Celestron spotting scope —from initial set up to on-

going use. This manual is broken down into several sections. The first covers attaching your

spotting scope to a stable platform, like a photographic tripod, so that the standard accessories can

be attached. The second section is on using your spotting scope. Topics include how to attach the

standard accessories, how to locate objects, etc. The last sections deal with general information.

Topics include visual and photographic observing hints, astronomical uses for your spotting

scope, and maintenance information. Before you attempt to use your spotting scope, read this

manual carefully.

A Word of Caution!

Your Celestron spotting scope is designed to give you hours of fun and rewarding observations.

There are, however, a few things to consider before using your spotting scope that will ensure

your safety and protect your equipment.

• Never look directly at the Sun with the naked eye or with your spotting scope. Permanent and

irreversible eye damage may result.

• Never use your spotting scope to project an image of the Sun onto any surface. Internal heat

build-up can damage your spotting scope and/or any accessories attached to it.

• Never use an eyepiece solar filter or a Herschel wedge. Internal heat build-up inside your

spotting scope can cause these devices to crack or break, allowing unfiltered sunlight to pass

through to the eye.

• Never leave your spotting scope unsupervised, either when children are present or adults who

may not be familiar with the correct operating procedures of your spotting scope.

• Never point your spotting scope at the Sun unless you have the proper solar filter. When

using your spotting scope with the proper solar filter, ALWAYS cover the finderscope.

Although small in aperture, this instrument has enough light gathering power to possibly

cause permanent and irreversible eye damage. In addition, the image projected by the finder

is hot enough to burn skin and clothing.

GETTING STARTED

The high magnification of your spotting scope makes it very difficult to handhold and, as a result,

it must be attached to a stable platform. The 102mm Wide View has a tripod adapter block,

which is located on the bottom of the spotting scope tube. Remove your spotting scope from the

box and attach it to any of the mounts described below.

Photographic Tripod

For best results, attach your Celestron spotting scope to a photographic tripod like the Celestron

Photographic Tripod (#93596) or any fairly rigid photographic tripod. To attach your spotting

scope to the tripod:

1. Remove the instrument platform from the tripod. To do this, rotate the platform lock

clockwise. Pull the back of the instrument platform out first, then pivot the front out. Since

the platform lock is spring-loaded, hold the clamp in position and pull the platform up, off of

the tripod head.

2. Place the tripod adapter block (on the instrument) over the 1/4x20 screw on the tripod head.

Keep in mind that the platform is not on the tripod at this time. Tighten the screw (located on

the under side of the platform) until tight. Just in front of the 1 /4x20 screw is a small peg

used to secure video cameras to the tripod. If you are not using a video camera, this peg,

which is spring-loaded, will push down into the tripod head.

3. Rotate the platform lock clockwise. Slide the front of the platform in first, then pivot the back

in.

4. Push the platform lock counterclockwise until it touches the under side of the tripod head.

This will hold the platform in place.

Once mounted on the tripod, you are ready to attach the standard accessories.

Slow Motion Control

The Photographic Tripod Slow Motion Control (#93804-DX) is not a mount, but a fine pointing

tool that fits between your spotting scope and a photographic tripod head. Unlike the rough

adjustment handles found on photographic tripods, the Photographic Tripod Slow Motion Control

uses fine adjustment knobs to allow for precision pointing.

What next?

With your spotting scope firmly attached to a stable platform, you are ready to attach the standard

accessories and begin using your spotting scope.

The Wide View Spotting Scope

This section covers the correct set up and operating procedures for your Celestron 80mm or

102mm Wide View spotting scope and includes information on visual and photographic

observations. The Wide View spotting scope uses a classical refractor optical design with a two-

element (achromatic) lens made of crown and flint glass. Unlike other spotting scopes which have

built-in correcting prisms, the Wide View uses a diagonal to produce a correctly oriented image.

This allows you to use your spotting scope like a conventional telephoto when a camera is

attached. The basic Celestron Wide View comes standard with the following accessories:

80mm Wide View 102mm Wide View

20mm Plossl Eyepiece 1 1/4” (20x) 25mm Plossl Eyepiece 1 1/4” (20x)

10mm Plossl Eyepiece 1 1/4” (40x) 10mm Plossl Eyepiece 1 1/4” (50x)

45° Erect Image Diagonal – 1 1/4” 45° Erect Image Diagonal – 1 1/4”

8x20 Erect Image Finderscope 8x20 Erect Image Finderscope

Lens Caps Lens Caps

1/4 x20 Mounting Adapter 1/4 x 20 Mounting Adapter

Take a few minutes to study the diagram on the following page to help familiarize yourself with

the various parts of your spotting scope for set up and ongoing use.

Figure 1 – Wide View spotting scope shown on optional tripod

Eyepiece

Objective

Lens

45º Erect Image

ago

Focuse

Knob

Photographic

Tripod

(Optional)

Finderscope

Mounting

Bracket

Removing the Lens Cover

To protect your spotting scope, the objective lens, focuser, and accessories are fitted with

protective covers. All are tension-fitted and easily removed by pulling off. The covers should be

removed as each piece is installed. Once removed, place the covers in the box to ensure they

won’t get lost.

Attaching the Standard Accessories

With your spotting scope attached to a sturdy mount, as described earlier in this manual, you are

ready to attach the standard accessories. To do this:

1. Remove the protective cover from the focuser of the spotting scope, the 45ºErect Image

Diagonal, and the eyepiece.

2. Loosen the thumbscrew on the focuser of the spotting scope so that the opening (i.e., inner

diameter) is unobstructed.

3. Slide the chrome barrel of the 45ºErect Image Diagonal into the focuser barrel.

4. Tighten the thumbscrew on the focuser to hold it in place.

5. Loosen the thumbscrew on the eyepiece holder of the 45ºErect Image Diagonal. Make sure

that it does not block the inner diameter of the eyepiece holder.

6. Insert the chrome barrel of the eyepiece into the 45ºErect Image Diagonal.

7. Tighten the thumbscrew on the 45° Erect Image Diagonal to hold the eyepiece in place.

Figure 2

Attaching The Finderscope

Your spotting scope comes with a 8x20 erect image finderscope to help you locate distant objects

that might be difficult to find in the narrow field of view of the main spotting scope.

1. Attach the finderscope and bracket by sliding the rubber O-ring over the objective lens

(narrow) end of the finderscope and roll it 1/3 of the way up the finderscope body. Then

insert the object lens end of the finder through the rings in the bracket until the O-ring

presses tightly between the finderscope and the inside of the bracket. Tighten the three

adjustment screws until they make contact with the finderscope body. See figure 3a.

2. Slide the finder bracket (attached to the finderscope) into the mounting bracket on the

spotting scope. Tighten the thumb screw on the mounting bracket to hold the finderscope

in place. See figure 3b.

Figure 3a

Aligning the Finderscope

To align the finderscope:

1. Choose a target in excess of one mile away. This will eliminate any possible parallax

effect.

2. Point the spotting scope at your target and center it in the eyepiece of the spotting scope.

3. Adjust the screws on the finder bracket until the cross hairs in the finder are centered on

the target.

4. Tighten each screw a quarter turn so the finder does not come loose.

Using Your Wide View Spotting Scope Visually

With the standard accessories attached, you are ready for your first look.

1. Point the front end of the spotting scope at a distant object.

2. Locate the object in the finderscope.

3. Look through the spotting scope and turn the focus knobs until objects come to a sharp

focus.

4. Center your target using the slow motion controls of the tripod.

Repeat this process for each object you observe.

Figure 3a Figure 3b

Finderscope

Adjustment

Screws

Focusing

For objects closer than the one you are currently observing, turn the focus knobs towards the

eyepiece and for objects further away, turn the focus knobs away from the eyepiece.

Changing Eyepieces

You can vary the power of your spotting scope simply by changing eyepieces. To change

eyepieces:

1. Loosen the thumbscrew on the 45° Erect Image Diagonal.

2. Remove the eyepiece currently in the spotting scope.

3. Insert a new eyepiece into the 45° Erect Image Diagonal.

4. Tighten the thumbscrew on the 45° Erect Image Diagonal to hold the eyepiece in place

With the new eyepiece in place you will need to refocus your spotting scope (unless the eyepieces

have the same focus point, something known as being parfocal). Once again, turn the focusing

ring until the image is sharp.

Celestron offers a wide variety of eyepieces as optional accessories. To determine the

magnification of each eyepiece used with your spotting scope, see the section “Calculating

Magnification” at the end of this manual.

In addition to eyepieces, you may also use a Barlow lens to increase magnification. A Barlow

lens is a negative lens that increases the focal length of a spotting scope. Used with an eyepiece it

increases the magnification. The amount of the increase depends on the lens itself and its position

in the optical system. Celestron offers Barlow lenses for 1-1/4” eyepieces (#93506 & #93507).

Using Your Wide View Spotting Scope Photographically

Your Spotting Scope can be used photographically as well as visually. To turn your spotting scope into a

telephoto lens all you need is a T-Ring for your particular camera make (i.e., Nikon, Minolta, Pentax, etc.).

The T-Ring replaces the 35mm SLR camera’s normal lens.

Built-in T-Adapter

Threads

1 ¼” Accessory

Adapter (for 102mm

WV)

Focuser Tension

Focuser Knob

2” Focuser

Barrel

Figure 4

Attaching a Camera

To attach a camera to your Wide View Spotter:

1. Remove all visual accessories.

2. Thread the proper T-Ring onto the built-in T-Adapter threads at the end of the eyepiece

holder.

3. Mount your camera body onto the T-Ring the same as you would any other lens.

Focusing The Camera

The focusing mechanism is the same photographically and visually. However, due to the high

magnification, the micro prism focuser in your camera may "black out." If this is the case, you

will have to use the ground glass portion of your focusing screen, which itself may be dark. For

the best results, take your time. Look at your subject carefully to make sure that you have the

sharpest possible focus. To achieve a very sharp focus, consider using a focusing magnifier.

These devices are readily available from your local camera store.

If you can not get a sharp focus, check to see if your subject is closer than the near focus distance

listed in the "Technical Specification" section.

Storing Your Wide View Spotting Scope

To minimize the need to clean your spotting scope, replace all lens covers after use. The spotting

scope can be left on a tripod for display purposes or returned to its shipping carton. Since the rear

cell of your Wide View spotting scope is not sealed, the eyepiece or protective cover MUST be

placed over the opening in the rear cell when not in use. This will prevent contaminants from

entering the optical system.

Technical Specifications

Below is pertinent technical information on your Wide View spotting scope that

you may find useful.

80mm Wide View 102mm Wide View

Optical System Refractor Refractor

Aperture: 80mm (3.15") 102mm (4")

Focal Length: 400mm (16") 500mm (20")

Near Focus: with low power eyepiece ~13' ~17

Useful Power Range: 12x to 189x 15x to 240x

Linear Field of View: 131' with 20mm Eyepiece

(53' with 10mm Eyepiece)

131' with 25mm Eyepiece

(53' with 10mm Eyepiece)

Angular Field of View: 2.5° with 20mm Eyepiece

(1.0° with 10mm Eyepiece)

2.5° with 25mm Eyepiece

(1.0° with 10mm Eyepiece)

F/ratio: f/5 f/5

Length: 15.5" 21"

Weight: 4 lbs. 11 oz 5 lbs.

Note: All specifications are stated for the Wide View spotting scopes using the standard

accessories. These specifications are approximate and may change without notice.

VISUAL OBSERVING INFORMATION

Focusing

When working with any optical instrument, there are several focusing hints that will ensure that

you get the sharpest possible image. The hints listed here are for visual observing and

photography.

S Never look through glass. Glass found in household windows is optically imperfect and

may vary in thickness from one location to the next. This inconsistency can and will

affect the ability to focus your spotting scope. In most cases, you will not be able to

achieve a truly sharp focus. In some cases, you may actually see a double image.

S Avoid looking across or over objects that are producing heat waves. This includes

asphalt parking lots on hot summer days or building rooftops. The turbulent air caused

by these conditions makes it impossible to get a truly sharp focus.

S Avoid hazy skies, fog, and mist, all of which can make it difficult to focus, thus greatly

reducing the amount of detail seen. Remember that no matter how good the optics of your

instrument are, they can NOT perform to their fullest under adverse conditions.

Calculating Magnification (Power)

You can change the magnification of your spotting scope simply by changing the eyepiece (also

called an ocular). To determine the magnification with your spotting scope, simply divide the

focal length of your spotting scope by the focal length of the eyepiece. In equation format, the

formula looks like this:

Focal Length of Spotting Scope (mm)

Magnification = ___________________________________________________

Focal Length of Eyepiece (mm)

For example, to determine the magnification of the 102mm Wide View with a 25mm eyepiece,

divide the focal length of the 102mm Wide View (500mm) by the focal length of the eyepiece

(25mm). 500 divided by 25 yields 20 power.

Although the power is variable, each instrument has a limit to the highest useful magnification.

The general rule is that 60 power can be used for every inch of aperture. For example, in a 4”

diameter spotting scope, such as the 102mm Wide View, the maximum useful magnification is

240 power. This is derived from multiplying 60 times 4”. Although this is the maximum useful

magnification, most observing is done in the range of 20 to 35 power for every inch of aperture

which for the 102mm Wide View is 80 to 140.

Field of View

Determining the field of view is important if you want to get an idea of the size of the object you

are observing. To calculate the actual field of view, divide the apparent field of the eyepiece

(supplied by the eyepiece manufacturer) by the magnification. In equation format, the formula

looks like this:

Apparent Field of Eyepiece

True Field (in degrees) =

Magnification

Using the example we started with in the previous section, we can determine the field of view

using the same 25mm eyepiece. The 25mm eyepiece has an apparent field of view of 50°. Divide

the 50° by the magnification, which is 20 power. This yields an actual field of 2.5°, or two and a

half degrees. To convert this to feet at one thousand yards, multiply the actual field of 2.5° by

52.5. This gives us a field width of 131 feet at one thousand yards.

PHOTOGRAPHY HINTS

Metering

Celestron spotting scopes have fixed apertures and, as a result, fixed f/ratios. To properly expose

your subjects photographically, you need to set your shutter speed accordingly. Most 35mm SLR

cameras offer through-the-lens metering which lets you know if your picture is under or

overexposed. Adjustments for proper exposures are made by changing the shutter speed. Consult

your camera manual for specific information on metering and changing shutter speeds.

Reducing Vibration

Releasing the shutter manually can cause

vibrations, producing blurred photos. To reduce

vibration when tripping the shutter, use a cable

release. A cable release keeps your hands clear of

the camera and lens, thus eliminating the possibility

of introducing vibration. Mechanical shutter

releases can be used, though air-type releases are

best.

Blurry pictures can also result from shutter speeds

that are too slow. To prevent this, use films that produce shutter speeds greater than 1/250 of a

second when hand-holding the lens. If the lens is mounted on a tripod, the exposure length is

virtually unlimited.

Another way to reduce vibration is with the Vibration Suppression Pads (#93503). These pads

rest between the ground and tripod feet. They reduce the vibration amplitude and vibration time.

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