Orion STARBLAST Bedienungsanleitung

WARNING: Never look directly at the Sun through the telescope or its finder

scope —even for an instant —as permanent eye damage could result. Do not

point the telescope at the Sun, as parts will melt! Children should use this

telescope ONLY with adult supervision.

Instruction Manual

Seaford Public Library

2234 Jackson Avenue

Seaford, NY 11783

(516) 221-1334

Please read

this BEFORE

using

Telescope

Table of Contents

Page 3…. Telescope Parts

Page 4…. Transporting the Telescope

Page 4/5…. Care and Maintenance

Page 5/6…. Getting Started/Setting up

Page 6…. Focusing the Telescope

Page 7/8…. Operating the Finder Scope/ What to

Expect

Page 8/9…. Objects to Observe

Page 10….Sky Map (September 2021)

Page 11…. When to Go Observing

Page 12….Additional Information/Books

TELESCOPE PARTS:

1. Zoom Eyepiece

2. EZ Finder Scope (turn off when not in use)

3. Telescope tube

4. Focus wheels

5. Tube Clamp; loosen to rotate

6. Altitude Clamp (do not turn)

7. Mirror assembly (do not turn screws)

8. Support

9. Handle

10. Eyepiece rack (removed)

11. Eyepiece (replace by zoom)

12. Feet on base

Focuser Details

13) Focus wheels

14) Eyepiece securing screws (glued in place please do not try to turn)

Use on a stable, sturdy table.

CARE AND MAINTENANCE:

Store the telescope with the dust caps on and in a clean, dry, dust-free place, safe

from rapid temperature changes and humidity. Do not store the telescope

outdoors. Please keep the dust cover and eye piece cap on the telescope when it’s

not in use. Keeping the telescope dry is most important.

TRANSPORTING THE TELESCOPE:

The easiest way to carry the telescope is to place your forearm under the telescope

tube when it is in a level position, and lift, holding the upright support against your

side. When in a car, place the scope on a seat and use a seatbelt to secure it. The lap

belt goes across the base, and the chest belt should cross the tube.

Fog on the mirrors and eyepiece: Please do not wipe the eyepiece with a tissue

or cloth. One of the odd things that happens during stargazing is that dew forms on

almost everything (and everyone). The big mirror is down at the bottom of the

telescope and it does not get much dew. Eyepieces, however, often have dew form

on them, making them useless until they warm up and dry.

If dew is settling, it is best to take the telescope inside to warm up and dry off.

The eyepiece has special coatings that could be damaged if it is rubbed or scratched.

Please do not touch the glass on the eyepiece and Please don’t clean or adjust the

lenses or mirrors. Let the librarian know if the lenses seem dirty. The main

mirror can be quite dusty before anyone would notice the image becoming poor.

Eyepieces, however, can get dirty fairly quickly, particularly when poked with

fingers. If it happens, let the librarian know and she or he will have it cleaned.

GETTING STARTED:

Now that you have the telescope at home, please get familiar with the different parts

and functions shown on page 3. The brief explanation at the library should help to

get you started. Practice indoors with the telescope before going outside and try to

use it in the dark. When the telescope is not in use, please leave the eyepiece dust

cap and the front cover in place.

SETTING UP:

Set-up the telescope on a stable surface to help avoid vibrations. Do this while it is

still daylight to make it easy to see and to allow the mirror to reach ambient

temperature. The image will be much better if you let the telescope cool down to

outside air temperature before you start observing after dark, and it is much easier

to set-up in daylight, just before sunset.

The images will be upside down and backward when

viewing in the eyepiece. When seen at night, the objects in the sky are

light years away. That they are upside down really doesn’t matter. The

Zoom eyepiece is permanently mounted in the focuser. Remove the

dust caps from the eyepiece and front of the telescope tube.

Do You Wear Eyeglasses? If so, you will probably be able to observe with your

glasses off by just refocusing the telescope to your unaided vision. If your eyes are

astigmatic, images will probably appear best with glasses on. This is because a

telescope’s focuser can accommodate for nearsightedness or farsightedness, but not

astigmatism. You can also observe with your

eyeglasses on.

This is important enough to say:

WARNING: Never look directly at the Sun through

the telescope or its finder scope - even for an instant

– as permanent eye damage could result. This is one

of the few really bad things you can do to yourself

with this telescope. Young children should use this

telescope ONLY with adult supervision.

FOCUSING THE TELESCOPE:

Try out the telescope during the day when you can see what you’re doing. Remove

the dust caps from the eyepiece and telescope tube. Remember to replace them

when done. The “power” of a given telescope depends upon the eyepiece you use.

This scope has a zoom eyepiece. Always start by using the telescope’s

lowest-power (turn the body of the Zoom so the pointer is at “24”) to locate and

center an object. Low magnification shows a larger area of the sky in the eyepiece,

making finding and centering an object much easier.

With the eyepiece adjusted for low power (24mm), aim the telescope in the general

direction of an object at least ¼ mile away. Slowly rotate the focus wheels until the

object comes into sharp focus. Go a little bit beyond sharp focus until the image

starts to blur again. Then reverse the rotation of the knob, just to make sure you’ve

hit the focus point. When focusing on stars, bring them to as small a point as

possible.

Many “deep-sky” objects are big, but dim. Low magnification will be better for

them. Once you’ve centered an object in the eyepiece, you can switch to a higher

magnification by twisting the Zoom’s barrel towards the “8”. This is recommended

for small and bright objects, like planets and double stars. The Moon also takes

higher magnification as well. You may have to refocus a little after changing power.

OPERATING THE FINDER SCOPE:

The finder scope has a wider field of view than the telescope so that it is easier to

find what you want to see. Turn on the finder scope by turning the knob on the right

side. Remember to turn it off when not in use. Point the telescope towards the

object you wish to observe. Look through the finder scope and center the red dot on

the object you want to observe. It may be difficult at first to use the finder scope but

with a little experience it should become easy. Once an object is centered in the

finder scope it should be centered in the eyepiece as well. If it is not, then the finder

scope will need to be adjusted.

Inform the Librarian. Please do not try to adjust the finder scope yourself.

WHAT TO EXPECT:

Depending upon what is in the sky; Planets will look small, but you might be able

to see cloud bands on Jupiter or the rings of Saturn. Craters on the Moon will be

clear and numerous, the waxing and waning of Venus should be visible, and many

bright deep-sky objects will fill the eyepiece. Don’t expect to see

color as you do in NASA photos as our eyes are not sensitive enough to see color in

deep-sky objects, except in a few of the brightest ones. Remember that you are

seeing these objects using your own eyes! Each session with the telescope will be a

learning experience.

OBJECTS TO OBSERVE:

The Moon: Is one of the easiest and most interesting targets to view. Lunar craters,

“seas”, and even mountain ranges can all be clearly seen from an

average distance of 238,000 miles away! With its ever-changing phases, you’ll get a

new view of the Moon every night it’s up. Make sure to observe the Moon when it

is well above the horizon to get the sharpest images. The best time to observe is

during a partial phase, that is, when the Moon is not full. During partial phases,

shadows are cast on the surface which reveal more detail, especially right along the

border between the dark and light positions of the disk (called the “terminator”). If

the Moon is too bright, or you want a bit more contrast, remove the small plug from

the dust cover and put the cover back on the telescope. This is called “steeping

down” and reduces the light hitting your eye.

The Planets do not stay at “fixed” locations like the stars do. To find them you

should refer to the Sky Calendar (telescope.com) or to charts published

monthly in Astronomy, Sky and Telescope, or other astronomy magazines and

websites. (Please see pg. 12) Venus, Jupiter, and Saturn are the brightest objects in

the sky after the Sun and the Moon.

Stars: Even powerful telescopes cannot magnify a star to appear as more than a

point of light. You can, however, enjoy the different colors of the stars and

locate many double and multiple stars. Look at the middle star in the handle of the

Big Dipper, Mizar. It is really two stars very close together. Being able to see the

two stars separate is called “Star Splitting”. The gorgeous two-color double star,

Albireo, in Cygnus, is a favorite. Defocusing a star slightly can help bring out its

color.

Deep-Sky Objects: Under dark skies, you can see lots of fascinating deep-sky

objects, including nebulas, star clusters, and a variety of different types of galaxies.

Most deep-sky objects are very faint, so it is important that you find an observing

site well away from light pollution. Take plenty of time to let your eyes adjust to the

darkness. Do not expect these subjects to appear like the photos you see in books

and magazines; many will look like dim gray smudges. As you become more

experienced and your observing skills get sharper, you will be able to ferret out

more and more subtle details and structure. Star clusters are particularly pretty,

usually bright and easy to see.

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