Manual Celestron 80LCM (page 12 of 35) (English)

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5. Then, center the star in the eyepiece and press ALIGN.

In order to accurately center the alignment star in the

eyepiece, you may wish to decrease the slew rate of the

motors for ﬁne centering. This is done by pressing the

RATE key (11) on the hand controller then selecting the

number that corresponds to the speed you desire. (9 =

fastest, 1 = slowest).

6. The LCM will then ask you to select and center a second

alignment star and press the ALIGN key. It is best to choose

alignment stars that are a good distance away from one

another. Stars that are at least 40º to 60º apart from each

other will give you a more accurate alignment than stars that

are close to each other.

Once the second star alignment is completed properly, the

display will read Align Successful, and you should

hear the tracking motors turn-on and begin to track.

One-Star Align

One-Star Align requires you to input all the same information

as you would for the Two-Star Align procedure. However,

instead of slewing to two alignment stars for centering and

alignment, the LCM uses only one star to model the sky based

on the information given. This will allow you to roughly slew

to the coordinates of bright objects like the Moon and planets

and gives the LCM the information needed to track objects in

altazimuth in any part of the sky. One-Star Align is not meant to

be used to accurately locate small or faint deep-sky objects or

to track objects accurately for photography.

To use One-Star Align:

1. Select One-Star Align from the alignment options.

2. Press ENTER to accept the time/site information displayed

on the display, or press UNDO to enter new information.

3. The SELECT STAR 1 message will appear in the top row of

thedisplay.UsetheUpandDownscrollkeys(10)toselect

the star you wish to use for the ﬁrst alignment star.

Press ENTER.

4. The LCM then asks you to center in the eyepiece the

alignment star you selected. Use the direction arrow buttons

to slew the telescope to the alignment star and carefully

center the star in the ﬁnderscope. Press ENTER

when centered.

5. Then, center the star in the eyepiece and press ALIGN.

6. Once in position, the LCM will model the sky based on this

information and display Align Successful.

Note: Once a One-Star Alignment has been done, you

can use the Re-alignment feature (later in this section) to

improve your telescope’s pointing accuracy.

Solar System Align

Solar System Align is designed to provide excellent tracking

andGoToperformancebyusingsolarsystemobjects(Sun,

Moonandplanets)toalignthetelescopewiththesky.Solar

System Align is a great way to align your telescope for daytime

viewing as well as a quick way to align the telescope for night

time observing.

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.

1. Select Solar System Align from the alignment options.

2. Press ENTER to accept the time/site information displayed

on the display, or press UNDO to enter

new information.

3. The SELECT OBJECT message will appear in the top row of

thedisplay.UsetheUpandDownscrollkeys(10)toselect

thedaytimeobject(planet,MoonorSun)youwishtoalign.

Press ENTER.

4. The LCM then asks you to center in the eyepiece the

alignment object you selected. Use the direction arrow

buttons to slew the telescope to the alignment object

and carefully center it in the ﬁnderscope. Press ENTER

when centered.

5. Then, center the object in the eyepiece and press ALIGN.

Once in position, the LCM will model the sky based on this

information and display Align Successful.

Tips for Using Solar System Align

• For safety purposes, the Sun will not be displayed in any of

the hand control’s customer object lists unless it is enabled

from the Utilities Menu. To allow the Sun to be displayed

on the hand control, do the following:

1. Press the UNDO button until the display reads

“LCM Ready”

2. Press the MENU button and use the Up and Down keys to

select the Utilities menu. Press ENTER.

3. Use the UP and Down keys to select Sun Menu and

press ENTER.

4. Press ENTER again to allow the Sun to appear on the hand

control display.

The Sun can be removed from the display by using the

same procedure as above.

To improve the telescope pointing accuracy, you can use

the Re-Align feature as described below.

Re-Alignment

The LCM has a re-alignment feature which allows you to replace

either of the original alignment stars with a new star or celestial

object. This can be useful in several situations:

• Ifyouareobservingoveraperiodofafewhours,youmay

notice that your original two alignment stars have drifted

towardsthewestconsiderably.(Rememberthatthestarsare

movingatarateof15ºeveryhour).Aligningonanewstar

that is in the eastern part of the sky will improve your pointing

accuracy, especially on objects in that part of the sky.

• IfyouhavealignedyourtelescopeusingtheOne-staralign

method, you can use re-align to align to an additional object

in the sky. This will improve the pointing accuracy of your

telescope without having to re-enter addition information.

To replace an existing alignment star with a new alignment star:

1.Selectthedesiredstar(orobject)fromthedatabaseandslew

to it.

2. Carefully center the object in the eyepiece.

3. Once centered, press the UNDO button until you are at the

main menu.

4. With LCM Ready displayed, press the ALIGN key on the

hand control.

5. The display will then ask you which alignment star you want

to replace.

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Celestron 80LCM Manual

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