Celestron 93571 Manual

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ENGLISH

DIELECTRIC STAR

DIAGONAL, 1.25"

WITH TWIST-LOCK

Item# 93571

The Celestron Dielectric Star Diagonal, 1.25"

with Twist-Lock makes interchanging any 1.25"

accessory easier than ever. At the heart of

this diagonal is a dielectric coated, diffraction

limited, 99+% reflective mirror. By upgrading

to this premium star diagonal, you have truly

unlocked the peak resolution of your telescope.

Using it couldn't be simpler: just turn the twist-

lock clockwise to secure your eyepiece in place,

or turn it counterclockwise to loosen the clamp,

freeing the eyepiece. The bright, Celestron

orange lock collar is easy to see at night,

allowing you to quickly swap out attachments

without the need for additional light, preserving

your night vision. The full metal frame offers a

durable, rigid construction that will last for years

to come. The 1.25" insert is baffled and painted

matte black, while the mirror housing is insulated

with foam padding to minimize glare and block

internal reflections and stray light. The 1.25"

insert is threaded to accept 1.25" filters. Dust

caps are included to protect your diagonal.

USING THE TWIST-LOCK MECHANISM

To attach a 1.25" accessory to the diagonal,

twist the twist-lock collar counterclockwise

until it becomes loose and remove the dust

cover.

Insert your 1.25" eyepiece, Barlow

lens, or camera adapter into the twist-lock

and twist the collar clockwise to secure the

accessory in place. Virtually any accessory that

uses a standard 1.25" barrel will work with

this diagonal. An integrated 1.25" barrel stop

prevents overextended 1.25" accessories from

damaging the mirror.

Specifications

Diagonal Size

1.25"

Visual Back Compatibility

1.25"

Anodized orange aluminum,

Twist-Lock

knurled grip

Compression Ring

Yes, single compression ring

Diagonal Type

Mirror

Glass

BK7

Coatings

Dielectric

Number of Coatings Layered 58

Optical Quality

Diffraction limited

Diagonal Construction

Aluminum

Threads for Filters

Yes 1.25"

Weight

7.5 oz (213 g)

Warranty

2 years

celestron.com/pages/technical-support

Telephone: 1(800) 421-9649

2835 Columbia Street • Torrance, CA 90503 USA

04-19

Products or instructions may change without notice

or obligation.

Designed and intended for those 14 years of age

and older.

ENGLISH

DIELECTRIC STAR

DIAGONAL,

2" WITH TWIST-LOCK

Item# 93573

The Celestron Dielectric Star Diagonal, 2" with

Twist-Lock makes interchanging any 2" or 1.25"

accessory easier than ever. At the heart of this

diagonal is a dielectric coated, diffraction limited,

99+% reflective mirror. By upgrading to this

premium star diagonal, you have truly unlocked

the peak resolution of your telescope. Using

it couldn't be simpler: just turn the twist-lock

clockwise to secure your eyepiece in place, or turn

it counterclockwise to loosen the clamp, freeing the

eyepiece. The bright, Celestron orange lock collar

is easy to see at night, allowing you to quickly swap

out attachments without the need for additional

light, preserving your night vision. The full metal

frame offers a durable, rigid construction that will

last for years to come. The SCT and 2" adapters

are baffled and painted matte black, while the mirror

housing is insulated with foam padding to minimize

glare and block internal reflections and stray light.

The 2" insert is threaded to accept filters. Dust

caps are included to protect your diagonal.

USING THE DIAGONAL WITH 2" ACCESSORIES

To attach a 2" accessory to the diagonal, twist

the 2" twist-lock collar counterclockwise until

it becomes loose and remove the preinstalled

stepdown adapter for 1.25" accessories. Insert

your 2" eyepiece, Barlow lens, or camera adapter

into the 2" twist-lock and twist the collar clockwise

to secure the accessory in place. Virtually any

accessory that uses a standard 2" barrel will

work with this diagonal. An integrated 2" barrel

stop prevents overextended 2" accessories from

damaging the mirror.

USING THE DIAGONAL WITH 1.25" ACCESSORIES

WITH THE STEPDOWN ADAPTER

To attach a 1.25" accessory to the diagonal, twist

the 2" twist-lock collar counterclockwise until it

becomes loose. If you are using the diagonal for

the first time, you will find the stepdown adapter for

1.25" accessories preinstalled. Otherwise, insert

the stepdown adapter and tighten the 2" collar

to secure it in place. Insert your 1.25" eyepiece,

Barlow lens, or camera adapter into the stepdown

adapter and twist the 1.25" collar on the stepdown

adapter clockwise to secure the accessory. Virtually

any accessory that uses a standard 1.25" barrel will

work with this diagonal and the stepdown adapter.

INTERCHANGING THE SCT AND 2" ADAPTER

Large telescopes designed to work with 2"

accessories typically have one of two ways to attach

accessories to the visual back of the telescope. All

Celestron Schmidt-Cassegrain telescopes (SCTs)

use a SCT thread on the rear cell of the optical tube.

Almost all SCTs feature this standard visual back

thread, going back to some of the first generation

Celestron Schmidt-Cassegrain optical tubes. This

same SCT adapter is also found on the Celestron

Mak 700 optical tube. Some other telescopes use

a 2" insert to attach 2" accessories, as opposed

to a threaded connection. This diagonal will work

with either attachment method, so you can use it

with virtually any telescope.

The SCT adapter comes preinstalled, so your

diagonal is ready to attach to any Celestron SCT

right out of the box.

To use the 2" adapter instead, firmly grasp the

SCT adapter and twist it counterclockwise to

loosen it. Remove the SCT adapter to expose the

threads on the diagonal to attach the 2" adapter.

Take the 2" adapter and begin threading it onto

the diagonal. Hand tighten to secure it.