Meade114EQASTR 3/28/07 9:33 AM Page 18

should not be considered

 

 

Fig. 10

reason to clean the surface.

 

 

 

16 When lens or mirror

 

 

 

cleaning does become

 

 

 

necessary, use a camel's hair

Monture

 

 

brush or compressed air

Miroir Diagonal

Miroir Primaire

Diagonale

gently to remove dust. If the

 

 

 

telescope's dust cover is

 

 

Vis D'inclinaison

replaced after each observing

 

 

 

Image Focalisée

du Miroir Primaire

session, cleaning of the optics

 

 

 

 

 

 

will rarely be required.

The Newtonian Reflecting Telescope

 

• Fingerprints and organic

COLLIMATION

 

Fig. 11

materials on the lens or mirror may

 

(ALIGNMENT) OF

 

 

be removed with a solution of 3 parts

 

 

OPTICS

 

 

distilled water to 1 part isopropyl

 

 

All Polaris 114 EQ-AR

 

 

alcohol. You may also add 1 drop of

 

 

biodegradable dishwashing soap per

telescopes are

 

 

pint of solution. Use soft, white facial

optically aligned at the

 

 

tissues and make short, gentle

factory prior to

2

 

strokes. Change tissues often.

shipment. It is unlikely

 

 

 

CAUTION: Do not use scented

that you will need to

 

 

align, or collimate, the

 

 

or lotioned tissues or damage

 

 

optics after receipt of

Diagonal Assembly

 

could result to the optics. DO NOT

 

the instrument.

 

use a commercial photographic

 

 

However, if the telescope received unusually

lens cleaner.

rough handling in shipment, it is possible

 

 

 

 

that the optics must be re-aligned for best

 

optical performance. In any case this alignment procedure is simple, and requires only a few minutes the very first time the telescope is used. Take the time to familiarize yourself with the following collimation procedure, so That you will recognize a properly collimated instrument and can adjust the collimation yourself, if necessary.

A. CORRECT COLLIMATION

The properly collimated (aligned) mirror system in the Polaris 114 EQ-AR assures the sharpest images possible. This occurs when the primary mirror and diagonal mirror are tilted so that the focused image falls directly through the center of the focuser drawtube. These mirror tilt adjustments are made with the diagonal assembly and the primary mirror cell (Fig. 10) and will be discussed later.

To inspect the view of the mirror collimation, look down the focuser drawtube with the eyepiece removed. The edge of the focuser drawtube (1, Fig.13), will frame the reflections of the primary mirror with the 3 mirror clips (2, Fig. 13)

Looking at or near the Sun will cause irreversible damage to your eye. Do not point this telescope at or near the Sun. Do not look through the telescope as it is moving.

Page 18
Image 18
Meade 114EQ-ASTR instruction manual Alignment, Optics, Correct Collimation