Meade SN-10 AT Manual de instrucciones descargar pdf (Pagina 6)

number (2.1Eh, 2.1Ei, 2.1Ek, 2.1Er for an example from

last year).

Courtesy of: Dick Seymour

WHICH AUTOSTAR VERSION DO I HAVE?: The easiest way is to

read the first screen when you turn it on. It will print some-

thing like: (c)02 MEADE [24e] (this may not be exact, but

you get the idea). [24e] is the version. The LXD55s started

shipping with 23e....

Courtesy of: Jason Carden

(check: www.meade.com/support/auto/Build.zip to see what

the latest version is.

CHANGING SCROLLING TEXT SPEED: Press and hold the UP ar-

row key to increase the scrolling speed when a message is

scrolling across the display. Press and hold the DOWN

arrow key to decrease the scrolling speed when a message

is scrolling across the display.

MOTOR UNIT FAULT MESSAGE: Motor Unit Fault can be caused

by many things: low batteries, dragging axes, and: failure

to Calibrate the drive. One of the steps which is a good

thing to do once in a while is: Setup > Telescope > Cali-

brate Drives [enter].

The two motors will run for about 2 seconds each, and its

done. What its doing is tuning the encoder pickup circuits

for optimal operation. If you have -never- done it, then that

could well have been the cause of the MUF.

Courtesy of: Dick Seymour

HOW TO START AND STOP A SPIRAL SEARCH: You can do a spi-

ral search anytime by holding down the GoTo key for about

three seconds, or, if you just completed a GoTo, by just tap-

ping the GoTo key. Once a spiral search has started, press-

ing any key will stop it.

MY AUTOSTAR DOES NOT OFFER LXD55 AS A CHOICE: Make

sure you have your Dec motor cable plugged in before you

power up.

Set-Up & Alignment Issues

This list is in no particular order. It is taken from the LXD55

Yahoo! User’s Group database (with permission), and includes

the contributor’s name if he or she so desires. You will see

redundancies occasionally, but we’ve found that most are

worth repeating. If you’d like to contribute to this (or any other)

list, please send us an e-mail with a subject heading of “LXD55

Database”, and we’ll consider it! Thanks!

POLAR ALIGNING THE POLARSCOPE: Set your scope to Polar

Home (barrel set to Dec=90, RA will be discussed...), set

the Latitude plate to your latitude (Im assuming you dont

-change- the latitude plate from night to night, so once

youve got it, its good). IF you can, locate a spot where you

can set up the tripods legs the same way every session (I

know, I know... star parties are going to be difficult.. but

youll have hordes of helpful onlookers then... (dont be the

-first- to arrive)).. I have marked my viewing deck with

blue long-last masking tape for the tripod feet.

Now comes the RA part: rotate the RA axle to a comfort-

able viewing angle (the tubes position in the clamps will

affect this). Look through the viewfinder and bring Polaris

near the center by nudging the tripod legs.

Maximum Accuracy (extra points): Center Polaris. Now

swing the RA axis through quite an angle and verify that

Polaris stays rock-steady in the 26mm eyepiece. If it -

moves-, then your DEC is not truly 90 degrees. Adjust and

swing and adjust until Polaris doesnt move. Perhaps loosen

and set the DEC dial to match.

At this point we digress: Try to learn how to -locate- the

pole relative to Polaris, or Polaris relative to the pole. Its

pretty easy... the far tip of the Little Dippers Bowl is the

star Kochab. If you imagine a line drawn from it to Po-

laris, the POLE is 3/4 degree towards Kochab from Polaris

(the Full Moon is a half-degree... look at it through your

viewfinder, and through the 26mm eyepiece to get a handle

on how big 3/4 degree would be (1.5 moons).

Now, with that 3/4-degree spacing in mind, return to the

viewfinder, then the eyepiece, and adjust the tripod to place

Polaris where the offset should put it. Where that is will

rotate in your field of view throughout the night, and

throughout the year. At this time of year (summer), at 9pm,

Polaris is almost directly below the pole (i.e. closer to the

northern horizons dirt and houses). You want Polaris to

be off-center in the direction caused by raising the tip of

the telescopes barrel (by either tilting the latitude plate,

or by shortening the rear leg. At other times of night or

year (at 3am, or in 3 months at 9pm, Polaris will be due

East of the Pole) youll perhaps need to shuffle the tripod -

sideways- to reach the offset.

OK... you have just done what your Polar Alignment scope

does with a few circles and squares. Power up and proceed

to align as you normally do.

IMPROVING GOTO ACCURACY: After doing the full Alignment,

GoTo (during summertime) Arcturus. If its a bit (more than

1/4 degree) off, you can press the [enter] key for 3 seconds.

Release. Itll ask you to center it, and then tap [enter] again.

Thats SYNCing. Youve told the Autostar its over -there-

, dummy! ... you probably already knew that.

But heres the new stuff:

GoTo Polaris. IF it misses, do NOT use the Autostar, but

shuffle the tripod (or latitude adjustment screws) to -halve-

the error. Thats right.. dont -remove- the error, just cut it

in half. Now GoTo Arcturus. Again, SYNC to center it. Now

GoTo Polaris. Again, move the -mount- to halve the error.

Repeat until satisfied (Arcturus dead on), or until bored (i

get bored after three visits to Polaris).

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Meade SN-10 AT Manual de instrucciones Pagina 6

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