Meade ETX-125PE Instruction Manual download pdf (Page 16)

Chapter 5: OPTIONAL ACCESSORIES

CHAPTER

A wide assortment of professional Meade accessories is

available for both ETX model telescopes. Meade accessories

greatly extend many important applications of the telescope,

from low-power, wide-field terrestrial viewing to high-power

lunar and planetary observing. The premium quality of these

accessories is well suited to the quality of the instrument itself.

Meade telescopes and accessories, including optional

accessories for ETX telescopes, are available at more than

2000 dealer locations in the U.S. and Canada and through

Meade international distributors worldwide. Once you have

identified the accessories you wish to order, contact your

local Meade authorized dealer.To find a dealer near you, call

(949) 451-1450 or visit the Meade website at

www.meade.com.

#497 Au t o s t a r

™

Computer Contro l l e r: One of the most

important advances in telescope control in the past 25 years,

the Meade #497 Autostar Computer Controller (Fig. 23) turns

either ETX model into an automatic celestial object locating

system. Just plug Autostar into the telescope’s HBX port in

place of the standard-

equipment Electronic Cont-

roller, do a quick telescope

alignment, and you are ready

to observe any object in the

A u t o s t a r’s 14,000-object

database.

Best of all, the Meade

Autostar is easy to use. Even

the most novice observer will

locate dozens of fascinating

objects the very first night out

— from commonly observed

objects, like the rings of

Saturn, the satellites of

Jupiter, and the Orion Nebula

(M42), to more diff i c u l t

objects, such as the Ring

Nebula (M57) in Lyra, the

Spiral Galaxy (M33) in

Triangulum, and the Som-

brero Galaxy (M104) in Virgo;

to very obscure objects near

the telescope’s threshold of

v i s i b i l i t y, such as spiral

galaxy NGC 3310 in Ursa

Major.

Any of Autostar’s database

objects can be called up and entered on the hand controller

display in seconds. The observer then simply presses the

GO TO pushbutton and watches as the telescope automatically

slews to the object and places it in the field of view. Autostar

brings into easy access objects that were previously

unreachable for all but the most dedicated of amateur

astronomers.

Astro Software/Cable Connector Kit:

Meade ETX–90ECand

ETX-125EC Astro

Telescopes equipped with

the Autostar Computer

Controller maybe used in

conjunction with Meade

astro software to operate

the telescope in the GO

TO mode directly from the

display of a personal

computer. With the Meade

astro software loaded into

the PC, and with the PC connected to the telescope through

Autostar’s RS-232 serial interface (using the #505 Cable

Connector Set, included with each astro software package),

the observer can point and

click on any object shown on

the PC display. The telescope

then slews to the object at a

speed of 5° per second on

both telescope axes and

places the object in the

telescopic field of view.

E ye p i e c e s : Meade Super

Plössl (SP), Super Wide Angle

(SWA), and Ultra Wide Angle

( U WA) eyepieces in the

standard American-size (1.25”)

barrel diameter (Fig. 25) permit

a wide range of magnifying

powers with both ETX models.

Powers obtained with each

eyepiece are shown in the

following table.

Meade SP and SWA eyepieces are ideal for general-purpose

astronomical or terrestrial observing. The typical ETX user may

wish to add two or three of these eyepieces to his or her

telescope. An introductory selection might include the SP

9.7mm and SP 15mm eyepieces. The more advanced observer

might select the SP 9.7mm, SP 12.4mm, and SWA 18mm.

Meade SWA eyepieces yield extremely wide fields of view,

perfect for the examination of star fields or diffuse nebulae, or

for terrestrial applications. Under steady viewing conditions,

Meade UWA 4.7mm and

6.7mm eyepieces present the

widest fields of view obtainable

at high powers and are

excellent eyepieces for viewing

the Moon and planets.

#126 2x Barlow Lens: A n

amplifying lens, the #126 2x

Barlow Lens (Fig. 26) doubles

the powers of all eyepieces

with which it is used. Insert the

#126 into the telescope’s

eyepiece holder first, followed

by an eyepiece. Example: By

itself the SP 26mm eyepiece

yields a power of 73X with the

ETX-125EC; when used with

the #126 2X Barlow Lens, this

eyepiece yields 146X.

Fig. 25: Optional Eyepieces

yield higher and lower

magnifying powers with the

telescope.

Fig. 26: Use the #126 2x

Barlow Lens to double the

magnification of the eyepiece

employed.

Fig.23: #497 Autostar

Computer Controller.

ETX-90EC ETX-125EC

Eyepiece

Power 2X Barlow Power 2X Barlow

SP6.4mm 195X 390X 297X 594X **

SP9.7mm 129X 258X 196X 392X

SP 12.4mm 101X 202X 153X 306X

SP 15mm 83X 166X 127X 253X

SP 20mm 63X 126X 95X 190X

SP 26mm * 48X 96X 73X 146X

SP 32mm 39X 78X 59X 119X

SP 40mm 31X 62X 48X 96X

SWA 13.8mm 91X 182X 138X 275X

SWA 18mm 69X 138X 106X 211X

SWA 24.5mm 51X 102X 78X 155X

UWA 4.7mm 266X N/A 404X N/A

UWA 6.7mm 187X 374X ** 284X 567X **

Included as standard-equipment with both ETX models.

Use these eyepieces only under extremely steady

atmospheric conditions.

Fig.24: Astro software.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 27 28

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