Celestron CGX-L Equatorial Manual

Celestron Ikke kategoriseret CGX-L Equatorial

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Side 1/8

POLAR AXIS FINDERSCOPE CGX & CGX-L

INSTRUCTION SHEET

Model # 94239

What’s in the Box?

• Polar ﬁnderscope and bracket

• Plastic dust covers for both ends of ﬁnderscope

• Dovetail mounting bracket (attached to base

of bracket)

• Hex head screws (x2)

• Hex keys (x4)

• Phillips screwdriver

Solar Warning

• Never look directly at the Sun with the naked eye

or with a telescope (unless you have the proper

solar ﬁlter). Permanent and irreversible eye damage

may result.

• Never use your telescope to project an image of

the Sun onto any surface. Internal heat build-up

can damage the telescope and any accessories

attached to it.

• Never use an eyepiece solar ﬁlter or a Herschel

wedge. Internal heat build-up inside the telescope

can cause these devices to crack or break, allowing

unﬁltered sunlight to pass through to the eye.

• Do not leave the telescope unsupervised, either

when children are present or adults who may not

be familiar with the correct operating procedures of

your telescope.

Installing the Polar Finder

1. Loosen the two thumb knobs on the base of the

ﬁnderscope and slide the dovetail base plate off

the bottom of the ﬁnder bracket.

2. Locate the polar ﬁnder bracket mount on the

CGX or CGX-L mount. This will be a rectangular

plate located on the right-side mount’s Right

Ascension axis, just below the declination motor

housing. Remove the two Phillips head screws

and the cover plate.

3. Install the dovetail bracket into these holes using

the two hex head screws provided with packaging.

Make sure the thinner part of the dovetail bracket is

facing the north side of the mount with the broader

side facing south.

4. Slide the polar ﬁnder and bracket assembly onto the

dovetail mount and tighten the two thumb knobs to

secure it in place.

5. The position of the polar ﬁnder can be adjusted to

make the polar ﬁnder more easily accessible. To

do this, loosen the large hand knob in the middle

of the bracket, set the angle of the ﬁnder to the

desired position and tighten the knob.

Focusing the Polar Finderscope

To focus the ﬁnderscope, simply look through the

ﬁnderscope and rotate the eyepiece clockwise or

counterclockwise until the reticle is sharp.

Aligning the Polar Finderscope

Before the polar ﬁnderscope can be used, you must

align the ﬁnderscope with the mechanical polar axis

of your CGX or CGX-L mount.

1. Set the mount up during the day, but without the

counterweight bar, counterweight or telescope

tube.

2. Locate a stationary object at least ¼ mile away or

as far away as possible.

3. Loosen the Right Ascension clutch lever and

rotate the mount in R. A. until you reach one of

the hard stops.

4. Center your chosen object in the crosshairs of the

polar ﬁnderscope reticle using the latitude and

azimuth adjustment knobs on the mount. These

are the knobs which you would normally use for

polar alignment.

5. Rotate the mount 180° in R.A. and tighten the

clutch levers.

6. Look through the ﬁnderscope for your target.

If the crosshair reticle is still on the same target after

the rotation, no further adjustment is required. If

the crosshairs have moved off your target, you will

need to adjust the three knobs surrounding the

ﬁnderscope’s objective lens.

1. Without moving the equatorial mount, start by

backing off the three hex head screws recessed

in the finder bracket next to the three finder

adjustment knobs.

2. Loosen one of the ﬁnder adjustment knobs by a

half turn, then tighten one or both of the remaining

ﬁnder adjustment knobs to keep even pressure on

the ﬁnderscope. As you adjust the knobs, the aiming

point of the ﬁnderscope will shift slightly.

3. Move the crosshairs back towards the target, but

do not center the crosshairs over the target.

Instead, only move the crosshairs halfway back

toward the target.

4. Gently tighten the three recessed hex head

screws until they are snug. Do not overtighten.

5. Use the latitude and azimuth adjustment knobs on

the equatorial mount to re-center the crosshairs

on your distant target.

6. Unlock the R.A. clutch knob on the mount and

rotate the mount 180° back the other direction.

7. Look through the ﬁnderscope for your target.

8. The alignment should be close. Repeat this procedure

as necessary until the crosshair stays on target

after rotating the mount 180°.

While a daytime alignment is easier, it is possible to

do this alignment at night. Simply use Polaris as your

target to center the crosshairs of the ﬁnderscope.

NOTE: You should only need to do this alignment

procedure once, unless the ﬁnderscope is

bumped or dropped. Your polar ﬁnderscope is

mounted to the CGX or CGX-L mount using a

dovetail bracket that will allow you to attach and

remove the ﬁnderscope for storage or travel. It

should maintain its alignment with repeated use.

If you adjust the angle of the finder bracket arm

after aligning the finder, you may want to check

the alignment once again before use to verify

the finder is still aligned to the polar axis of

the mount.

Alignment Knobs

Objective Lens

Eyepiece &

Focuser

Produkt Specifikationer

Mærke:	Celestron
Kategori:	Ikke kategoriseret
Model:	CGX-L Equatorial

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